Update recommended Terraform provider versions

* Sync Terraform provider plugin versions to those used
internally
* Update mkdocs-material from v5.5.1 to v5.5.6
* Fix minor details in docs

.github/ISSUE_TEMPLATE.md

@@ -1,33 +0,0 @@
-<!-- Fill in either the 'Bug' or 'Feature Request' section -->
-
-## Bug
-
-### Environment
-
-* Platform: aws, azure, bare-metal, google-cloud, digital-ocean
-* OS: fedora-coreos, flatcar-linux
-* Release: Typhoon version or Git SHA (reporting latest is **not** helpful)
-* Terraform: `terraform version` (reporting latest is **not** helpful)
-* Plugins: Provider plugin versions (reporting latest is **not** helpful)
-
-### Problem
-
-Describe the problem.
-
-### Desired Behavior
-
-Describe the goal.
-
-### Steps to Reproduce
-
-Provide clear steps to reproduce the issue unless already covered.
-
-## Feature Request
-
-### Feature
-
-Describe the feature and what problem it solves.
-
-### Tradeoffs
-
-What are the pros and cons of this feature? How will it be exercised and maintained?

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,39 @@
+---
+name: Bug report
+about: Report a bug to improve the project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- READ: Issues are used to receive focused bug reports from users and to track planned future enhancements by the authors. Topics like cluster operation, support, debugging help, advice, and Kubernetes concepts are out of scope and should not use issues-->
+
+**Description**
+
+A clear and concise description of what the bug is.
+
+**Steps to Reproduce**
+
+Provide clear steps to reproduce the bug.
+
+- [ ] Relevant error messages if appropriate (concise, not a dump of everything).
+- [ ] Explored using a vanilla cluster from the [tutorials](https://typhoon.psdn.io/#documentation). Ruled out [customizations](https://typhoon.psdn.io/advanced/customization/).
+
+**Expected behavior**
+
+A clear and concise description of what you expected to happen.
+
+**Environment**
+
+* Platform: aws, azure, bare-metal, google-cloud, digital-ocean
+* OS: fedora-coreos, flatcar-linux (include release version)
+* Release: Typhoon version or Git SHA (reporting latest is **not** helpful)
+* Terraform: `terraform version` (reporting latest is **not** helpful)
+* Plugins: Provider plugin versions (reporting latest is **not** helpful)
+
+**Possible Solution**
+
+<!-- Most bug reports should have some inkling about solutions. Otherwise, your report may be less of a bug and more of a support request (see top).-->
+
+Link to a PR or description.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Security
+    url: https://typhoon.psdn.io/topics/security/
+    about: Report security vulnerabilities

.github/issue_template.md

@@ -0,0 +1,15 @@
+<!-- READ: Issues are used to receive focused bug reports from users and to track planned future enhancements by the authors. Topics like cluster operation, support, debugging help, advice, and Kubernetes concepts are out of scope and should not use issues-->
+
+## Enhancement
+
+### Overview
+
+One paragraph explanation of the enhancement.
+
+### Motivation
+
+Describe the motivation and what problem this solves.
+
+### Tradeoffs
+
+What are the pros and cons of this feature? How will it be exercised and maintained?

CHANGES.md

@@ -4,6 +4,200 @@ Notable changes between versions.
 
 ## Latest
 
+### v1.18.8
+
+* Kubernetes [v1.18.8](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1188)
+* Migrate from Terraform v0.12.x to v0.13.x ([#804](https://github.com/poseidon/typhoon/pull/804)) (**action required**)
+  * Recommend Terraform v0.13.x ([migration guide](https://typhoon.psdn.io/topics/maintenance/#terraform-versions))
+  * Support automatic install of poseidon's provider plugins ([poseidon/ct](https://registry.terraform.io/providers/poseidon/ct/latest), [poseidon/matchbox](https://registry.terraform.io/providers/poseidon/matchbox/latest))
+  * Require Terraform v0.12.26+ (migration compatibility)
+  * Require `terraform-provider-ct` v0.6.1
+  * Require `terraform-provider-matchbox` v0.4.1
+* Update etcd from v3.4.9 to [v3.4.10](https://github.com/etcd-io/etcd/releases/tag/v3.4.10)
+* Update CoreDNS from v1.6.7 to [v1.7.0](https://coredns.io/2020/06/15/coredns-1.7.0-release/)
+* Update Cilium from v1.8.1 to [v1.8.2](https://github.com/cilium/cilium/releases/tag/v1.8.2)
+* Update [coreos/flannel-cni](https://github.com/coreos/flannel-cni) to [poseidon/flannel-cni](https://github.com/poseidon/flannel-cni) ([#798](https://github.com/poseidon/typhoon/pull/798))
+  * Update CNI plugins and fix CVEs with Flannel CNI (non-default)
+  * Transition to a poseidon maintained container image
+
+### AWS
+
+* Allow `terraform-provider-aws` v3.0+ ([#803](https://github.com/poseidon/typhoon/pull/803))
+  * Recommend updating `terraform-provider-aws` to v3.0+
+  * Continue to allow v2.23+, no v3.x specific features are used
+
+### DigitalOcean
+
+* Require `terraform-provider-digitalocean` v1.21+ for Terraform v0.13.x (unenforced)
+* Require `terraform-provider-digitalocean` v1.20+ for Terraform v0.12.x
+
+### Fedora CoreOS
+
+* Fix support for Flannel with Fedora CoreOS ([#795](https://github.com/poseidon/typhoon/pull/795))
+  * Configure `flannel.1` link to select its own MAC address to solve flannel
+  pod-to-pod traffic drops starting with default link changes in Fedora CoreOS
+  32.20200629.3.0 ([details](https://github.com/coreos/fedora-coreos-tracker/issues/574#issuecomment-665487296))
+
+#### Addons
+
+* Update Prometheus from v2.19.2 to [v2.20.0](https://github.com/prometheus/prometheus/releases/tag/v2.20.0)
+* Update Grafana from v7.0.6 to [v7.1.3](https://github.com/grafana/grafana/releases/tag/v7.1.3)
+
+## v1.18.6
+
+* Kubernetes [v1.18.6](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1186)
+* Update Calico from v3.15.0 to [v3.15.1](https://docs.projectcalico.org/v3.15/release-notes/)
+* Update Cilium from v1.8.0 to [v1.8.1](https://github.com/cilium/cilium/releases/tag/v1.8.1)
+
+#### Addons
+
+* Update nginx-ingress from v0.33.0 to [v0.34.1](https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.34.1)
+  * [ingress-nginx](https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v0.34.0) will publish images only to gcr.io
+* Update Prometheus from v2.19.1 to [v2.19.2](https://github.com/prometheus/prometheus/releases/tag/v2.19.2)
+* Update Grafana from v7.0.4 to [v7.0.6](https://github.com/grafana/grafana/releases/tag/v7.0.6)
+
+## v1.18.5
+
+* Kubernetes [v1.18.5](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1185)
+* Add Cilium v1.8.0 as a (experimental) CNI provider option ([#760](https://github.com/poseidon/typhoon/pull/760))
+  * Set `networking` to "cilium" to enable
+* Update Calico from v3.14.1 to [v3.15.0](https://docs.projectcalico.org/v3.15/release-notes/)
+
+#### DigitalOcean
+
+* Isolate each cluster in an independent DigitalOcean VPC ([#776](https://github.com/poseidon/typhoon/pull/776))
+  * Create droplets in a VPC per cluster (matches Typhoon AWS, Azure, and GCP)
+  * Require `terraform-provider-digitalocean` v1.16.0+ (action required)
+  * Output `vpc_id` for use with an attached DigitalOcean [loadbalancer](https://github.com/poseidon/typhoon/blob/v1.18.5/docs/architecture/digitalocean.md#custom-load-balancer)
+
+### Fedora CoreOS
+
+#### Google Cloud
+
+* Promote Fedora CoreOS to stable
+* Remove `os_image` variable deprecated in v1.18.3 ([#777](https://github.com/poseidon/typhoon/pull/777))
+  * Use `os_stream` to select a Fedora CoreOS image stream
+
+### Flatcar Linux
+
+#### Azure
+
+* Allow using Flatcar Linux Edge by setting `os_image` to "flatcar-edge" ([#778](https://github.com/poseidon/typhoon/pull/778))
+
+#### Addons
+
+* Update Prometheus from v2.19.0 to [v2.19.1](https://github.com/prometheus/prometheus/releases/tag/v2.19.1)
+* Update Grafana from v7.0.3 to [v7.0.4](https://github.com/grafana/grafana/releases/tag/v7.0.4)
+
+## v1.18.4
+
+* Kubernetes [v1.18.4](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1184)
+* Update Kubelet image publishing ([#749](https://github.com/poseidon/typhoon/pull/749))
+  * Build Kubelet images internally and publish to Quay and Dockerhub
+    * [quay.io/poseidon/kubelet](https://quay.io/repository/poseidon/kubelet) (official)
+    * [docker.io/psdn/kubelet](https://hub.docker.com/r/psdn/kubelet) (fallback)
+  * Continue offering automated image builds with an alternate tag strategy (see [docs](https://typhoon.psdn.io/topics/security/#container-images))
+  * [Document](https://typhoon.psdn.io/advanced/customization/#kubelet) use of alternate Kubelet images during registry incidents
+* Update Calico from v3.14.0 to [v3.14.1](https://docs.projectcalico.org/v3.14/release-notes/)
+  * Fix [CVE-2020-13597](https://github.com/kubernetes/kubernetes/issues/91507)
+* Rename controller NoSchedule taint from `node-role.kubernetes.io/master` to `node-role.kubernetes.io/controller` ([#764](https://github.com/poseidon/typhoon/pull/764))
+  * Tolerate the new taint name for workloads that may run on controller nodes
+* Remove node label `node.kubernetes.io/master` from controller nodes ([#764](https://github.com/poseidon/typhoon/pull/764))
+  * Use `node.kubernetes.io/controller` (present since v1.9.5, [#160](https://github.com/poseidon/typhoon/pull/160)) to node select controllers
+* Remove unused Kubelet `-lock-file` and `-exit-on-lock-contention` ([#758](https://github.com/poseidon/typhoon/pull/758))
+
+### Fedora CoreOS
+
+#### Azure
+
+* Use `strict` Fedora CoreOS Config (FCC) snippet parsing ([#755](https://github.com/poseidon/typhoon/pull/755))
+* Reduce Calico vxlan interface MTU to maintain performance ([#767](https://github.com/poseidon/typhoon/pull/766))
+
+#### AWS
+
+* Fix Kubelet service race with hostname update ([#766](https://github.com/poseidon/typhoon/pull/766))
+  * Wait for a hostname to avoid Kubelet trying to register as `localhost`
+
+### Flatcar Linux
+
+* Use `strict` Container Linux Config (CLC) snippet parsing ([#755](https://github.com/poseidon/typhoon/pull/755))
+  * Require `terraform-provider-ct` v0.4+, recommend v0.5+ (**action required**)
+
+### Addons
+
+* Update nginx-ingress from v0.32.0 to [v0.33.0](https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.33.0)
+* Update Prometheus from v2.18.1 to [v2.19.0](https://github.com/prometheus/prometheus/releases/tag/v2.19.0)
+* Update node-exporter from v1.0.0-rc.1 to [v1.0.1](https://github.com/prometheus/node_exporter/releases/tag/v1.0.1)
+* Update kube-state-metrics from v1.9.6 to v1.9.7
+* Update Grafana from v7.0.0 to v7.0.3
+
+## v1.18.3
+
+* Kubernetes [v1.18.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1183)
+* Use Kubelet [TLS bootstrap](https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/) with bootstrap token authentication ([#713](https://github.com/poseidon/typhoon/pull/713))
+  * Enable Node [Authorization](https://kubernetes.io/docs/reference/access-authn-authz/node/) and [NodeRestriction](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#noderestriction) to reduce authorization scope
+  * Renew Kubelet certificates every 72 hours
+* Update etcd from v3.4.7 to [v3.4.9](https://github.com/etcd-io/etcd/releases/tag/v3.4.9)
+* Update Calico from v3.13.1 to [v3.14.0](https://docs.projectcalico.org/v3.14/release-notes/)
+* Add CoreDNS node affinity preference for controller nodes ([#188](https://github.com/poseidon/terraform-render-bootstrap/pull/188))
+* Deprecate CoreOS Container Linux support (no OS [updates](https://coreos.com/os/eol/) after May 2020)
+  * Use a `fedora-coreos` module for Fedora CoreOS
+  * Use a `container-linux` module for Flatcar Linux
+
+### AWS
+
+* Fix Terraform plan error when `controller_count` exceeds AWS zones (e.g. 5 controllers) ([#714](https://github.com/poseidon/typhoon/pull/714))
+  * Regressed in v1.17.1 ([#605](https://github.com/poseidon/typhoon/pull/605))
+
+### Azure
+
+* Update Azure subnets to set `address_prefixes` list ([#730](https://github.com/poseidon/typhoon/pull/730))
+  * Fix warning that `address_prefix` is deprecated
+  * Require `terraform-provider-azurerm` v2.8.0+ (action required)
+
+### DigitalOcean
+
+* Promote DigitalOcean to beta on both Fedora CoreOS and Flatcar Linux
+
+### Fedora CoreOS
+
+* Fix Calico `install-cni` crashloop on Pod restarts ([#724](https://github.com/poseidon/typhoon/pull/724))
+  * SELinux enforcement requires consistent file context MCS level
+  * Restarting a node resolved the issue as a previous workaround
+
+#### AWS
+
+* Support Fedora CoreOS [image streams](https://docs.fedoraproject.org/en-US/fedora-coreos/update-streams/) ([#727](https://github.com/poseidon/typhoon/pull/727))
+  * Add `os_stream` variable to set the stream to `stable` (default), `testing`, or `next`
+  * Remove unused `os_image` variable
+
+#### Google
+
+* Support Fedora CoreOS [image streams](https://docs.fedoraproject.org/en-US/fedora-coreos/update-streams/) ([#723](https://github.com/poseidon/typhoon/pull/723))
+  * Add `os_stream` variable to set the stream to `stable` (default), `testing`, or `next`
+  * Deprecate `os_image` variable. Manual image uploads are no longer needed
+
+### Flatcar Linux
+
+#### Azure
+
+* Use the Flatcar Linux Azure Marketplace image
+  * Restore [#664](https://github.com/poseidon/typhoon/pull/664) (reverted in [#707](https://github.com/poseidon/typhoon/pull/707)) but use Flatcar Linux new free offer (not byol)
+* Change `os_image` to use a `flatcar-stable` default
+
+#### Google
+
+* Promote Flatcar Linux to beta
+
+### Addons
+
+* Update nginx-ingress from v0.30.0 to [v0.32.0](https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.32.0)
+  * Add support for [IngressClass](https://kubernetes.io/docs/concepts/services-networking/ingress/#ingress-class)
+* Update Prometheus from v2.17.1 to v2.18.1
+  * Update kube-state-metrics from v1.9.5 to [v1.9.6](https://github.com/kubernetes/kube-state-metrics/releases/tag/v1.9.6)
+  * Update node-exporter from v1.0.0-rc.0 to [v1.0.0-rc.1](https://github.com/prometheus/node_exporter/releases/tag/v1.0.0-rc.1)
+* Update Grafana from v6.7.2 to [v7.0.0](https://grafana.com/docs/grafana/latest/guides/whats-new-in-v7-0/)
+
 ## v1.18.2
 
 * Kubernetes [v1.18.2](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1182)

README.md

@@ -11,9 +11,9 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
-* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
+* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/), SELinux enforcing
 * Advanced features like [worker pools](https://typhoon.psdn.io/advanced/worker-pools/), [preemptible](https://typhoon.psdn.io/cl/google-cloud/#preemption) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
 * Ready for Ingress, Prometheus, Grafana, CSI, or other [addons](https://typhoon.psdn.io/addons/overview/)
 
@@ -28,35 +28,25 @@ Typhoon is available for [Fedora CoreOS](https://getfedora.org/coreos/).
 | AWS           | Fedora CoreOS | [aws/fedora-coreos/kubernetes](aws/fedora-coreos/kubernetes) | stable |
 | Azure         | Fedora CoreOS | [azure/fedora-coreos/kubernetes](azure/fedora-coreos/kubernetes) | alpha |
 | Bare-Metal    | Fedora CoreOS | [bare-metal/fedora-coreos/kubernetes](bare-metal/fedora-coreos/kubernetes) | beta |
-| DigitalOcean  | Fedora CoreOS | [digital-ocean/fedora-coreos/kubernetes](digital-ocean/fedora-coreos/kubernetes) | alpha |
-| Google Cloud  | Fedora CoreOS | [google-cloud/fedora-coreos/kubernetes](google-cloud/fedora-coreos/kubernetes) | beta |
+| DigitalOcean  | Fedora CoreOS | [digital-ocean/fedora-coreos/kubernetes](digital-ocean/fedora-coreos/kubernetes) | beta |
+| Google Cloud  | Fedora CoreOS | [google-cloud/fedora-coreos/kubernetes](google-cloud/fedora-coreos/kubernetes) | stable |
 
-Typhoon is available for [Flatcar Container Linux](https://www.flatcar-linux.org/releases/).
+Typhoon is available for [Flatcar Linux](https://www.flatcar-linux.org/releases/).
 
 | Platform      | Operating System | Terraform Module | Status |
 |---------------|------------------|------------------|--------|
 | AWS           | Flatcar Linux    | [aws/container-linux/kubernetes](aws/container-linux/kubernetes) | stable |
 | Azure         | Flatcar Linux    | [azure/container-linux/kubernetes](azure/container-linux/kubernetes) | alpha |
 | Bare-Metal    | Flatcar Linux    | [bare-metal/container-linux/kubernetes](bare-metal/container-linux/kubernetes) | stable |
-| DigitalOcean | Flatcar Linux  | [digital-ocean/container-linux/kubernetes](digital-ocean/container-linux/kubernetes) | alpha |
-| Google Cloud  | Flatcar Linux  | [google-cloud/container-linux/kubernetes](google-cloud/container-linux/kubernetes) | alpha |
-
-Typhoon is available for CoreOS Container Linux ([no updates](https://coreos.com/os/eol/) after May 2020).
-
-| Platform      | Operating System | Terraform Module | Status |
-|---------------|------------------|------------------|--------|
-| AWS           | Container Linux  | [aws/container-linux/kubernetes](aws/container-linux/kubernetes) | stable |
-| Azure         | Container Linux  | [azure/container-linux/kubernetes](azure/container-linux/kubernetes) | alpha |
-| Bare-Metal    | Container Linux  | [bare-metal/container-linux/kubernetes](bare-metal/container-linux/kubernetes) | stable |
-| Digital Ocean | Container Linux  | [digital-ocean/container-linux/kubernetes](digital-ocean/container-linux/kubernetes) | beta |
-| Google Cloud  | Container Linux  | [google-cloud/container-linux/kubernetes](google-cloud/container-linux/kubernetes) | stable |
+| DigitalOcean | Flatcar Linux  | [digital-ocean/container-linux/kubernetes](digital-ocean/container-linux/kubernetes) | beta |
+| Google Cloud  | Flatcar Linux  | [google-cloud/container-linux/kubernetes](google-cloud/container-linux/kubernetes) | beta |
 
 ## Documentation
 
 * [Docs](https://typhoon.psdn.io)
 * Architecture [concepts](https://typhoon.psdn.io/architecture/concepts/) and [operating systems](https://typhoon.psdn.io/architecture/operating-systems/)
 * Fedora CoreOS tutorials for [AWS](docs/fedora-coreos/aws.md), [Azure](docs/fedora-coreos/azure.md), [Bare-Metal](docs/fedora-coreos/bare-metal.md), [DigitalOcean](docs/fedora-coreos/digitalocean.md), and [Google Cloud](docs/fedora-coreos/google-cloud.md)
-* Flatcar Linux tutorials for [AWS](docs/cl/aws.md), [Azure](docs/cl/azure.md), [Bare-Metal](docs/cl/bare-metal.md), [DigitalOcean](docs/cl/digital-ocean.md), and [Google Cloud](docs/cl/google-cloud.md)
+* Flatcar Linux tutorials for [AWS](docs/flatcar-linux/aws.md), [Azure](docs/flatcar-linux/azure.md), [Bare-Metal](docs/flatcar-linux/bare-metal.md), [DigitalOcean](docs/flatcar-linux/digitalocean.md), and [Google Cloud](docs/flatcar-linux/google-cloud.md)
 
 ## Usage
 
@@ -64,7 +54,7 @@ Define a Kubernetes cluster by using the Terraform module for your chosen platfo
 
 ```tf
 module "yavin" {
-  source = "git::https://github.com/poseidon/typhoon//google-cloud/container-linux/kubernetes?ref=v1.18.2"
+  source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.18.8"
 
   # Google Cloud
   cluster_name  = "yavin"
@@ -103,9 +93,9 @@ In 4-8 minutes (varies by platform), the cluster will be ready. This Google Clou
 $ export KUBECONFIG=/home/user/.kube/configs/yavin-config
 $ kubectl get nodes
 NAME                                       ROLES    STATUS  AGE  VERSION
-yavin-controller-0.c.example-com.internal  <none>   Ready   6m   v1.18.2
-yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.18.2
-yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.18.2
+yavin-controller-0.c.example-com.internal  <none>   Ready   6m   v1.18.8
+yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.18.8
+yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.18.8
 ```
 
 List the pods.

addons/grafana/dashboards-coredns.yaml

@@ -72,7 +72,7 @@ data:
               "steppedLine": false,
               "targets": [
                 {
-                  "expr": "sum(rate(coredns_dns_request_count_total{instance=~\"$instance\"}[5m])) by (proto)",
+                  "expr": "sum(rate(coredns_dns_requests_total{instance=~\"$instance\"}[5m])) by (proto)",
                   "format": "time_series",
                   "intervalFactor": 2,
                   "legendFormat": "{{proto}}",
@@ -163,7 +163,7 @@ data:
               "steppedLine": false,
               "targets": [
                 {
-                  "expr": "sum(rate(coredns_dns_request_type_count_total{instance=~\"$instance\"}[5m])) by (type)",
+                  "expr": "sum(rate(coredns_dns_requests_total{instance=~\"$instance\"}[5m])) by (type)",
                   "format": "time_series",
                   "intervalFactor": 2,
                   "legendFormat": "{{type}}",
@@ -254,7 +254,7 @@ data:
               "steppedLine": false,
               "targets": [
                 {
-                  "expr": "sum(rate(coredns_dns_request_count_total{instance=~\"$instance\"}[5m])) by (zone)",
+                  "expr": "sum(rate(coredns_dns_requests_total{instance=~\"$instance\"}[5m])) by (zone)",
                   "format": "time_series",
                   "intervalFactor": 2,
                   "legendFormat": "{{zone}}",
@@ -463,7 +463,7 @@ data:
               "steppedLine": false,
               "targets": [
                 {
-                  "expr": "sum(rate(coredns_dns_response_rcode_count_total{instance=~\"$instance\"}[5m])) by (rcode)",
+                  "expr": "sum(rate(coredns_dns_responses_total{instance=~\"$instance\"}[5m])) by (rcode)",
                   "format": "time_series",
                   "intervalFactor": 2,
                   "legendFormat": "{{rcode}}",
@@ -790,7 +790,7 @@ data:
               "steppedLine": false,
               "targets": [
                 {
-                  "expr": "sum(coredns_cache_size{instance=~\"$instance\"}) by (type)",
+                  "expr": "sum(coredns_cache_entries{instance=~\"$instance\"}) by (type)",
                   "format": "time_series",
                   "intervalFactor": 2,
                   "legendFormat": "{{type}}",

addons/grafana/deployment.yaml

@@ -23,7 +23,7 @@ spec:
     spec:
       containers:
         - name: grafana
-          image: docker.io/grafana/grafana:6.7.2
+          image: docker.io/grafana/grafana:7.1.3
           env:
             - name: GF_PATHS_CONFIG
               value: "/etc/grafana/custom.ini"

addons/nginx-ingress/aws/class.yaml

@@ -0,0 +1,6 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: public
+spec:
+  controller: k8s.io/ingress-nginx

addons/nginx-ingress/aws/deployment.yaml

@@ -22,7 +22,7 @@ spec:
     spec:
       containers:
         - name: nginx-ingress-controller
-          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0
+          image: us.gcr.io/k8s-artifacts-prod/ingress-nginx/controller:v0.34.1
           args:
             - /nginx-ingress-controller
             - --ingress-class=public

addons/nginx-ingress/aws/rbac/cluster-role.yaml

@@ -51,3 +51,12 @@ rules:
       - ingresses/status
     verbs:
       - update
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingressclasses
+    verbs:
+      - get
+      - list
+      - watch
+

addons/nginx-ingress/azure/class.yaml

@@ -0,0 +1,6 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: public
+spec:
+  controller: k8s.io/ingress-nginx

addons/nginx-ingress/azure/deployment.yaml

@@ -22,7 +22,7 @@ spec:
     spec:
       containers:
         - name: nginx-ingress-controller
-          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0
+          image: us.gcr.io/k8s-artifacts-prod/ingress-nginx/controller:v0.34.1
           args:
             - /nginx-ingress-controller
             - --ingress-class=public

addons/nginx-ingress/azure/rbac/cluster-role.yaml

@@ -51,3 +51,12 @@ rules:
       - ingresses/status
     verbs:
       - update
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingressclasses
+    verbs:
+      - get
+      - list
+      - watch
+

addons/nginx-ingress/bare-metal/class.yaml

@@ -0,0 +1,6 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: public
+spec:
+  controller: k8s.io/ingress-nginx

addons/nginx-ingress/bare-metal/deployment.yaml

@@ -22,7 +22,7 @@ spec:
     spec:
       containers:
         - name: nginx-ingress-controller
-          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0
+          image: us.gcr.io/k8s-artifacts-prod/ingress-nginx/controller:v0.34.1
           args:
             - /nginx-ingress-controller
             - --ingress-class=public

addons/nginx-ingress/bare-metal/rbac/cluster-role.yaml

@@ -51,3 +51,12 @@ rules:
       - ingresses/status
     verbs:
       - update
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingressclasses
+    verbs:
+      - get
+      - list
+      - watch
+

addons/nginx-ingress/digital-ocean/class.yaml

@@ -0,0 +1,6 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: public
+spec:
+  controller: k8s.io/ingress-nginx

addons/nginx-ingress/digital-ocean/daemonset.yaml

@@ -22,7 +22,7 @@ spec:
     spec:
       containers:
         - name: nginx-ingress-controller
-          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0
+          image: us.gcr.io/k8s-artifacts-prod/ingress-nginx/controller:v0.34.1
           args:
             - /nginx-ingress-controller
             - --ingress-class=public

addons/nginx-ingress/digital-ocean/rbac/cluster-role.yaml

@@ -51,3 +51,12 @@ rules:
       - ingresses/status
     verbs:
       - update
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingressclasses
+    verbs:
+      - get
+      - list
+      - watch
+

addons/nginx-ingress/google-cloud/class.yaml

@@ -0,0 +1,6 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: public
+spec:
+  controller: k8s.io/ingress-nginx

addons/nginx-ingress/google-cloud/deployment.yaml

@@ -22,7 +22,7 @@ spec:
     spec:
       containers:
         - name: nginx-ingress-controller
-          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0
+          image: us.gcr.io/k8s-artifacts-prod/ingress-nginx/controller:v0.34.1
           args:
             - /nginx-ingress-controller
             - --ingress-class=public

addons/nginx-ingress/google-cloud/rbac/cluster-role.yaml

@@ -51,3 +51,12 @@ rules:
       - ingresses/status
     verbs:
       - update
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingressclasses
+    verbs:
+      - get
+      - list
+      - watch
+

addons/prometheus/deployment.yaml

@@ -20,7 +20,7 @@ spec:
       serviceAccountName: prometheus
       containers:
         - name: prometheus
-          image: quay.io/prometheus/prometheus:v2.17.1
+          image: quay.io/prometheus/prometheus:v2.20.0
           args:
             - --web.listen-address=0.0.0.0:9090
             - --config.file=/etc/prometheus/prometheus.yaml

addons/prometheus/exporters/kube-state-metrics/deployment.yaml

@@ -24,7 +24,7 @@ spec:
       serviceAccountName: kube-state-metrics
       containers:
       - name: kube-state-metrics
-        image: quay.io/coreos/kube-state-metrics:v1.9.5
+        image: quay.io/coreos/kube-state-metrics:v1.9.7
         ports:
           - name: metrics
             containerPort: 8080

addons/prometheus/exporters/node-exporter/daemonset.yaml

@@ -28,7 +28,7 @@ spec:
       hostPID: true
       containers:
       - name: node-exporter
-        image: quay.io/prometheus/node-exporter:v1.0.0-rc.0
+        image: quay.io/prometheus/node-exporter:v1.0.1
         args:
           - --path.procfs=/host/proc
           - --path.sysfs=/host/sys

addons/prometheus/rules.yaml

@@ -882,10 +882,10 @@ data:
             {
               "alert": "KubeClientCertificateExpiration",
               "annotations": {
-                "message": "A client certificate used to authenticate to the apiserver is expiring in less than 7.0 days.",
+                "message": "A client certificate used to authenticate to the apiserver is expiring in less than 1.0 hours.",
                 "runbook_url": "https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeclientcertificateexpiration"
               },
-              "expr": "apiserver_client_certificate_expiration_seconds_count{job=\"apiserver\"} > 0 and on(job) histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job=\"apiserver\"}[5m]))) < 604800\n",
+              "expr": "apiserver_client_certificate_expiration_seconds_count{job=\"apiserver\"} > 0 and on(job) histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job=\"apiserver\"}[5m]))) < 3600\n",
               "labels": {
                 "severity": "warning"
               }
@@ -893,10 +893,10 @@ data:
             {
               "alert": "KubeClientCertificateExpiration",
               "annotations": {
-                "message": "A client certificate used to authenticate to the apiserver is expiring in less than 24.0 hours.",
+                "message": "A client certificate used to authenticate to the apiserver is expiring in less than 0.1 hours.",
                 "runbook_url": "https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeclientcertificateexpiration"
               },
-              "expr": "apiserver_client_certificate_expiration_seconds_count{job=\"apiserver\"} > 0 and on(job) histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job=\"apiserver\"}[5m]))) < 86400\n",
+              "expr": "apiserver_client_certificate_expiration_seconds_count{job=\"apiserver\"} > 0 and on(job) histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job=\"apiserver\"}[5m]))) < 300\n",
               "labels": {
                 "severity": "critical"
               }

aws/container-linux/kubernetes/README.md

@@ -11,11 +11,11 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
 * On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
 * Advanced features like [worker pools](https://typhoon.psdn.io/advanced/worker-pools/), [spot](https://typhoon.psdn.io/cl/aws/#spot) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
-* Ready for Ingress, Prometheus, Grafana, and other optional [addons](https://typhoon.psdn.io/addons/overview/)
+* Ready for Ingress, Prometheus, Grafana, CSI, and other optional [addons](https://typhoon.psdn.io/addons/overview/)
 
 ## Docs
 

aws/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]

aws/container-linux/kubernetes/cl/controller.yaml

@@ -2,12 +2,12 @@
 systemd:
   units:
     - name: etcd-member.service
-      enable: true
+      enabled: true
       dropins:
         - name: 40-etcd-cluster.conf
           contents: |
             [Service]
-            Environment="ETCD_IMAGE_TAG=v3.4.7"
+            Environment="ETCD_IMAGE_TAG=v3.4.10"
             Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
             Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
@@ -28,11 +28,11 @@ systemd:
             Environment="ETCD_PEER_KEY_FILE=/etc/ssl/certs/etcd/peer.key"
             Environment="ETCD_PEER_CLIENT_CERT_AUTH=true"
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -46,12 +46,13 @@ systemd:
         RequiredBy=kubelet.service
         RequiredBy=etcd-member.service
     - name: kubelet.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
         Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -91,25 +92,24 @@ systemd:
           --mount volume=var-log,target=/var/log \
           --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
           --mount volume=opt-cni-bin,target=/opt/cni/bin \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -134,7 +134,7 @@ systemd:
             --volume script,kind=host,source=/opt/bootstrap/apply \
             --mount volume=script,target=/apply \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/apply
@@ -142,6 +142,11 @@ systemd:
         [Install]
         WantedBy=multi-user.target
 storage:
+  directories:
+    - path: /var/lib/etcd
+      filesystem: root
+      mode: 0700
+      overwrite: true
   files:
     - path: /etc/kubernetes/kubeconfig
       filesystem: root
@@ -163,13 +168,14 @@ storage:
           mv tls/etcd/etcd-client* /etc/kubernetes/bootstrap-secrets/
           chown -R etcd:etcd /etc/ssl/etcd
           chmod -R 500 /etc/ssl/etcd
+          chmod -R 700 /var/lib/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       filesystem: root
@@ -188,6 +194,7 @@ storage:
           done
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184

aws/container-linux/kubernetes/controllers.tf

@@ -36,7 +36,7 @@ resource "aws_instance" "controllers" {
 
   # network
   associate_public_ip_address = true
-  subnet_id                   = aws_subnet.public.*.id[count.index]
+  subnet_id                   = element(aws_subnet.public.*.id, count.index)
   vpc_security_group_ids      = [aws_security_group.controller.id]
 
   lifecycle {
@@ -49,10 +49,10 @@ resource "aws_instance" "controllers" {
 
 # Controller Ignition configs
 data "ct_config" "controller-ignitions" {
-  count        = var.controller_count
-  content      = data.template_file.controller-configs.*.rendered[count.index]
-  pretty_print = false
-  snippets     = var.controller_snippets
+  count    = var.controller_count
+  content  = data.template_file.controller-configs.*.rendered[count.index]
+  strict   = true
+  snippets = var.controller_snippets
 }
 
 # Controller Container Linux configs

aws/container-linux/kubernetes/security.tf

@@ -13,6 +13,30 @@ resource "aws_security_group" "controller" {
   }
 }
 
+resource "aws_security_group_rule" "controller-icmp" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "icmp"
+  from_port                = 8
+  to_port                  = 0
+  source_security_group_id = aws_security_group.worker.id
+}
+
+resource "aws_security_group_rule" "controller-icmp-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type      = "ingress"
+  protocol  = "icmp"
+  from_port = 8
+  to_port   = 0
+  self      = true
+}
+
 resource "aws_security_group_rule" "controller-ssh" {
   security_group_id = aws_security_group.controller.id
 
@@ -44,39 +68,31 @@ resource "aws_security_group_rule" "controller-etcd-metrics" {
   source_security_group_id = aws_security_group.worker.id
 }
 
-# Allow Prometheus to scrape kube-proxy
-resource "aws_security_group_rule" "kube-proxy-metrics" {
+resource "aws_security_group_rule" "controller-cilium-health" {
+  count = var.networking == "cilium" ? 1 : 0
+
   security_group_id = aws_security_group.controller.id
 
   type                     = "ingress"
   protocol                 = "tcp"
-  from_port                = 10249
-  to_port                  = 10249
+  from_port                = 4240
+  to_port                  = 4240
   source_security_group_id = aws_security_group.worker.id
 }
 
-# Allow Prometheus to scrape kube-scheduler
-resource "aws_security_group_rule" "controller-scheduler-metrics" {
+resource "aws_security_group_rule" "controller-cilium-health-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
   security_group_id = aws_security_group.controller.id
 
-  type                     = "ingress"
-  protocol                 = "tcp"
-  from_port                = 10251
-  to_port                  = 10251
-  source_security_group_id = aws_security_group.worker.id
-}
-
-# Allow Prometheus to scrape kube-controller-manager
-resource "aws_security_group_rule" "controller-manager-metrics" {
-  security_group_id = aws_security_group.controller.id
-
-  type                     = "ingress"
-  protocol                 = "tcp"
-  from_port                = 10252
-  to_port                  = 10252
-  source_security_group_id = aws_security_group.worker.id
+  type      = "ingress"
+  protocol  = "tcp"
+  from_port = 4240
+  to_port   = 4240
+  self      = true
 }
 
+# IANA VXLAN default
 resource "aws_security_group_rule" "controller-vxlan" {
   count = var.networking == "flannel" ? 1 : 0
 
@@ -111,6 +127,31 @@ resource "aws_security_group_rule" "controller-apiserver" {
   cidr_blocks = ["0.0.0.0/0"]
 }
 
+# Linux VXLAN default
+resource "aws_security_group_rule" "controller-linux-vxlan" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "udp"
+  from_port                = 8472
+  to_port                  = 8472
+  source_security_group_id = aws_security_group.worker.id
+}
+
+resource "aws_security_group_rule" "controller-linux-vxlan-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type      = "ingress"
+  protocol  = "udp"
+  from_port = 8472
+  to_port   = 8472
+  self      = true
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "aws_security_group_rule" "controller-node-exporter" {
   security_group_id = aws_security_group.controller.id
@@ -122,6 +163,17 @@ resource "aws_security_group_rule" "controller-node-exporter" {
   source_security_group_id = aws_security_group.worker.id
 }
 
+# Allow Prometheus to scrape kube-proxy
+resource "aws_security_group_rule" "kube-proxy-metrics" {
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 10249
+  to_port                  = 10249
+  source_security_group_id = aws_security_group.worker.id
+}
+
 # Allow apiserver to access kubelets for exec, log, port-forward
 resource "aws_security_group_rule" "controller-kubelet" {
   security_group_id = aws_security_group.controller.id
@@ -143,6 +195,28 @@ resource "aws_security_group_rule" "controller-kubelet-self" {
   self      = true
 }
 
+# Allow Prometheus to scrape kube-scheduler
+resource "aws_security_group_rule" "controller-scheduler-metrics" {
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 10251
+  to_port                  = 10251
+  source_security_group_id = aws_security_group.worker.id
+}
+
+# Allow Prometheus to scrape kube-controller-manager
+resource "aws_security_group_rule" "controller-manager-metrics" {
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 10252
+  to_port                  = 10252
+  source_security_group_id = aws_security_group.worker.id
+}
+
 resource "aws_security_group_rule" "controller-bgp" {
   security_group_id = aws_security_group.controller.id
 
@@ -227,6 +301,30 @@ resource "aws_security_group" "worker" {
   }
 }
 
+resource "aws_security_group_rule" "worker-icmp" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type                     = "ingress"
+  protocol                 = "icmp"
+  from_port                = 8
+  to_port                  = 0
+  source_security_group_id = aws_security_group.controller.id
+}
+
+resource "aws_security_group_rule" "worker-icmp-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type      = "ingress"
+  protocol  = "icmp"
+  from_port = 8
+  to_port   = 0
+  self      = true
+}
+
 resource "aws_security_group_rule" "worker-ssh" {
   security_group_id = aws_security_group.worker.id
 
@@ -257,6 +355,31 @@ resource "aws_security_group_rule" "worker-https" {
   cidr_blocks = ["0.0.0.0/0"]
 }
 
+resource "aws_security_group_rule" "worker-cilium-health" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 4240
+  to_port                  = 4240
+  source_security_group_id = aws_security_group.controller.id
+}
+
+resource "aws_security_group_rule" "worker-cilium-health-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type      = "ingress"
+  protocol  = "tcp"
+  from_port = 4240
+  to_port   = 4240
+  self      = true
+}
+
+# IANA VXLAN default
 resource "aws_security_group_rule" "worker-vxlan" {
   count = var.networking == "flannel" ? 1 : 0
 
@@ -281,6 +404,31 @@ resource "aws_security_group_rule" "worker-vxlan-self" {
   self      = true
 }
 
+# Linux VXLAN default
+resource "aws_security_group_rule" "worker-linux-vxlan" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type                     = "ingress"
+  protocol                 = "udp"
+  from_port                = 8472
+  to_port                  = 8472
+  source_security_group_id = aws_security_group.controller.id
+}
+
+resource "aws_security_group_rule" "worker-linux-vxlan-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type      = "ingress"
+  protocol  = "udp"
+  from_port = 8472
+  to_port   = 8472
+  self      = true
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "aws_security_group_rule" "worker-node-exporter" {
   security_group_id = aws_security_group.worker.id

aws/container-linux/kubernetes/versions.tf

@@ -1,11 +1,15 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    aws      = "~> 2.23"
-    ct       = "~> 0.3"
+    aws      = ">= 2.23, <= 4.0"
     template = "~> 2.1"
     null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
   }
 }

aws/container-linux/kubernetes/workers/cl/worker.yaml

@@ -2,11 +2,11 @@
 systemd:
   units:
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -19,12 +19,13 @@ systemd:
         [Install]
         RequiredBy=kubelet.service
     - name: kubelet.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
         Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -64,19 +65,18 @@ systemd:
           --mount volume=var-log,target=/var/log \
           --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
           --mount volume=opt-cni-bin,target=/opt/cni/bin \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           %{~ for label in split(",", node_labels) ~}
@@ -84,6 +84,7 @@ systemd:
           %{~ endfor ~}
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -112,6 +113,7 @@ storage:
           ${kubeconfig}
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
@@ -127,7 +129,7 @@ storage:
             --volume config,kind=host,source=/etc/kubernetes \
             --mount volume=config,target=/etc/kubernetes \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/usr/local/bin/kubectl -- --kubeconfig=/etc/kubernetes/kubeconfig delete node $(hostname)

aws/container-linux/kubernetes/workers/versions.tf

@@ -1,4 +1,14 @@
+# Terraform version and plugin versions
 
 terraform {
-  required_version = ">= 0.12"
+  required_version = ">= 0.12.26, < 0.14.0"
+  required_providers {
+    aws      = ">= 2.23, <= 4.0"
+    template = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+  }
 }

aws/container-linux/kubernetes/workers/workers.tf

@@ -71,9 +71,9 @@ resource "aws_launch_configuration" "worker" {
 
 # Worker Ignition config
 data "ct_config" "worker-ignition" {
-  content      = data.template_file.worker-config.rendered
-  pretty_print = false
-  snippets     = var.snippets
+  content  = data.template_file.worker-config.rendered
+  strict   = true
+  snippets = var.snippets
 }
 
 # Worker Container Linux config

aws/fedora-coreos/kubernetes/README.md

@@ -11,11 +11,11 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
-* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
+* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/), SELinux enforcing
 * Advanced features like [worker pools](https://typhoon.psdn.io/advanced/worker-pools/), [spot](https://typhoon.psdn.io/cl/aws/#spot) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
-* Ready for Ingress, Prometheus, Grafana, and other optional [addons](https://typhoon.psdn.io/addons/overview/)
+* Ready for Ingress, Prometheus, Grafana, CSI, and other optional [addons](https://typhoon.psdn.io/addons/overview/)
 
 ## Docs
 

aws/fedora-coreos/kubernetes/ami.tf

@@ -13,16 +13,8 @@ data "aws_ami" "fedora-coreos" {
     values = ["hvm"]
   }
 
-  filter {
-    name   = "name"
-    values = ["fedora-coreos-31.*.*.*-hvm"]
-  }
-
   filter {
     name   = "description"
-    values = ["Fedora CoreOS stable*"]
+    values = ["Fedora CoreOS ${var.os_stream} *"]
   }
-
-  # try to filter out dev images (AWS filters can't)
-  name_regex = "^fedora-coreos-31.[0-9]*.[0-9]*.[0-9]*-hvm*"
 }

aws/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]

aws/fedora-coreos/kubernetes/controllers.tf

@@ -36,7 +36,7 @@ resource "aws_instance" "controllers" {
 
   # network
   associate_public_ip_address = true
-  subnet_id                   = aws_subnet.public.*.id[count.index]
+  subnet_id                   = element(aws_subnet.public.*.id, count.index)
   vpc_security_group_ids      = [aws_security_group.controller.id]
 
   lifecycle {

aws/fedora-coreos/kubernetes/fcc/controller.yaml

@@ -28,7 +28,7 @@ systemd:
           --network host \
           --volume /var/lib/etcd:/var/lib/etcd:rw,Z \
           --volume /etc/ssl/etcd:/etc/ssl/certs:ro,Z \
-          quay.io/coreos/etcd:v3.4.7
+          quay.io/coreos/etcd:v3.4.10
         ExecStop=/usr/bin/podman stop etcd
         [Install]
         WantedBy=multi-user.target
@@ -38,11 +38,12 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Wait for DNS entries
+        Description=Wait for DNS and hostname
         Before=kubelet.service
         [Service]
         Type=oneshot
         RemainAfterExit=true
+        ExecStartPre=/bin/sh -c 'while [ `hostname -s` == "localhost" ]; do sleep 1; done;'
         ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
         [Install]
         RequiredBy=kubelet.service
@@ -51,9 +52,10 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -79,10 +81,11 @@ systemd:
           --volume /var/log:/var/log \
           --volume /var/run/lock:/var/run/lock:z \
           --volume /opt/cni/bin:/opt/cni/bin:z \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -90,16 +93,14 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -123,11 +124,13 @@ systemd:
             --volume /opt/bootstrap/assets:/assets:ro,Z \
             --volume /opt/bootstrap/apply:/apply:ro,Z \
             --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.18.2
+            quay.io/poseidon/kubelet:v1.18.8
         ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
         ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
   directories:
+    - path: /var/lib/etcd
+      mode: 0700
     - path: /etc/kubernetes
     - path: /opt/bootstrap
   files:
@@ -151,11 +154,11 @@ storage:
           chmod -R 500 /etc/ssl/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       mode: 0544
@@ -175,6 +178,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

aws/fedora-coreos/kubernetes/security.tf

@@ -13,6 +13,30 @@ resource "aws_security_group" "controller" {
   }
 }
 
+resource "aws_security_group_rule" "controller-icmp" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "icmp"
+  from_port                = 8
+  to_port                  = 0
+  source_security_group_id = aws_security_group.worker.id
+}
+
+resource "aws_security_group_rule" "controller-icmp-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type      = "ingress"
+  protocol  = "icmp"
+  from_port = 8
+  to_port   = 0
+  self      = true
+}
+
 resource "aws_security_group_rule" "controller-ssh" {
   security_group_id = aws_security_group.controller.id
 
@@ -44,39 +68,31 @@ resource "aws_security_group_rule" "controller-etcd-metrics" {
   source_security_group_id = aws_security_group.worker.id
 }
 
-# Allow Prometheus to scrape kube-proxy
-resource "aws_security_group_rule" "kube-proxy-metrics" {
+resource "aws_security_group_rule" "controller-cilium-health" {
+  count = var.networking == "cilium" ? 1 : 0
+
   security_group_id = aws_security_group.controller.id
 
   type                     = "ingress"
   protocol                 = "tcp"
-  from_port                = 10249
-  to_port                  = 10249
+  from_port                = 4240
+  to_port                  = 4240
   source_security_group_id = aws_security_group.worker.id
 }
 
-# Allow Prometheus to scrape kube-scheduler
-resource "aws_security_group_rule" "controller-scheduler-metrics" {
+resource "aws_security_group_rule" "controller-cilium-health-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
   security_group_id = aws_security_group.controller.id
 
-  type                     = "ingress"
-  protocol                 = "tcp"
-  from_port                = 10251
-  to_port                  = 10251
-  source_security_group_id = aws_security_group.worker.id
-}
-
-# Allow Prometheus to scrape kube-controller-manager
-resource "aws_security_group_rule" "controller-manager-metrics" {
-  security_group_id = aws_security_group.controller.id
-
-  type                     = "ingress"
-  protocol                 = "tcp"
-  from_port                = 10252
-  to_port                  = 10252
-  source_security_group_id = aws_security_group.worker.id
+  type      = "ingress"
+  protocol  = "tcp"
+  from_port = 4240
+  to_port   = 4240
+  self      = true
 }
 
+# IANA VXLAN default
 resource "aws_security_group_rule" "controller-vxlan" {
   count = var.networking == "flannel" ? 1 : 0
 
@@ -111,6 +127,31 @@ resource "aws_security_group_rule" "controller-apiserver" {
   cidr_blocks = ["0.0.0.0/0"]
 }
 
+# Linux VXLAN default
+resource "aws_security_group_rule" "controller-linux-vxlan" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "udp"
+  from_port                = 8472
+  to_port                  = 8472
+  source_security_group_id = aws_security_group.worker.id
+}
+
+resource "aws_security_group_rule" "controller-linux-vxlan-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.controller.id
+
+  type      = "ingress"
+  protocol  = "udp"
+  from_port = 8472
+  to_port   = 8472
+  self      = true
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "aws_security_group_rule" "controller-node-exporter" {
   security_group_id = aws_security_group.controller.id
@@ -122,6 +163,17 @@ resource "aws_security_group_rule" "controller-node-exporter" {
   source_security_group_id = aws_security_group.worker.id
 }
 
+# Allow Prometheus to scrape kube-proxy
+resource "aws_security_group_rule" "kube-proxy-metrics" {
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 10249
+  to_port                  = 10249
+  source_security_group_id = aws_security_group.worker.id
+}
+
 # Allow apiserver to access kubelets for exec, log, port-forward
 resource "aws_security_group_rule" "controller-kubelet" {
   security_group_id = aws_security_group.controller.id
@@ -143,6 +195,28 @@ resource "aws_security_group_rule" "controller-kubelet-self" {
   self      = true
 }
 
+# Allow Prometheus to scrape kube-scheduler
+resource "aws_security_group_rule" "controller-scheduler-metrics" {
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 10251
+  to_port                  = 10251
+  source_security_group_id = aws_security_group.worker.id
+}
+
+# Allow Prometheus to scrape kube-controller-manager
+resource "aws_security_group_rule" "controller-manager-metrics" {
+  security_group_id = aws_security_group.controller.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 10252
+  to_port                  = 10252
+  source_security_group_id = aws_security_group.worker.id
+}
+
 resource "aws_security_group_rule" "controller-bgp" {
   security_group_id = aws_security_group.controller.id
 
@@ -227,6 +301,30 @@ resource "aws_security_group" "worker" {
   }
 }
 
+resource "aws_security_group_rule" "worker-icmp" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type                     = "ingress"
+  protocol                 = "icmp"
+  from_port                = 8
+  to_port                  = 0
+  source_security_group_id = aws_security_group.controller.id
+}
+
+resource "aws_security_group_rule" "worker-icmp-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type      = "ingress"
+  protocol  = "icmp"
+  from_port = 8
+  to_port   = 0
+  self      = true
+}
+
 resource "aws_security_group_rule" "worker-ssh" {
   security_group_id = aws_security_group.worker.id
 
@@ -257,6 +355,31 @@ resource "aws_security_group_rule" "worker-https" {
   cidr_blocks = ["0.0.0.0/0"]
 }
 
+resource "aws_security_group_rule" "worker-cilium-health" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type                     = "ingress"
+  protocol                 = "tcp"
+  from_port                = 4240
+  to_port                  = 4240
+  source_security_group_id = aws_security_group.controller.id
+}
+
+resource "aws_security_group_rule" "worker-cilium-health-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type      = "ingress"
+  protocol  = "tcp"
+  from_port = 4240
+  to_port   = 4240
+  self      = true
+}
+
+# IANA VXLAN default
 resource "aws_security_group_rule" "worker-vxlan" {
   count = var.networking == "flannel" ? 1 : 0
 
@@ -281,6 +404,31 @@ resource "aws_security_group_rule" "worker-vxlan-self" {
   self      = true
 }
 
+# Linux VXLAN default
+resource "aws_security_group_rule" "worker-linux-vxlan" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type                     = "ingress"
+  protocol                 = "udp"
+  from_port                = 8472
+  to_port                  = 8472
+  source_security_group_id = aws_security_group.controller.id
+}
+
+resource "aws_security_group_rule" "worker-linux-vxlan-self" {
+  count = var.networking == "cilium" ? 1 : 0
+
+  security_group_id = aws_security_group.worker.id
+
+  type      = "ingress"
+  protocol  = "udp"
+  from_port = 8472
+  to_port   = 8472
+  self      = true
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "aws_security_group_rule" "worker-node-exporter" {
   security_group_id = aws_security_group.worker.id

aws/fedora-coreos/kubernetes/variables.tf

@@ -41,9 +41,9 @@ variable "worker_type" {
   default     = "t3.small"
 }
 
-variable "os_image" {
+variable "os_stream" {
   type        = string
-  description = "AMI channel for Fedora CoreOS (not yet used)"
+  description = "Fedora CoreOs image stream for instances (e.g. stable, testing, next)"
   default     = "stable"
 }
 

aws/fedora-coreos/kubernetes/versions.tf

@@ -1,11 +1,15 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    aws      = "~> 2.23"
-    ct       = "~> 0.4"
+    aws      = ">= 2.23, <= 4.0"
     template = "~> 2.1"
     null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
   }
 }

aws/fedora-coreos/kubernetes/workers.tf

@@ -8,7 +8,7 @@ module "workers" {
   security_groups = [aws_security_group.worker.id]
   worker_count    = var.worker_count
   instance_type   = var.worker_type
-  os_image        = var.os_image
+  os_stream       = var.os_stream
   disk_size       = var.disk_size
   spot_price      = var.worker_price
   target_groups   = var.worker_target_groups

aws/fedora-coreos/kubernetes/workers/ami.tf

@@ -13,16 +13,8 @@ data "aws_ami" "fedora-coreos" {
     values = ["hvm"]
   }
 
-  filter {
-    name   = "name"
-    values = ["fedora-coreos-31.*.*.*-hvm"]
-  }
-
   filter {
     name   = "description"
-    values = ["Fedora CoreOS stable*"]
+    values = ["Fedora CoreOS ${var.os_stream} *"]
   }
-
-  # try to filter out dev images (AWS filters can't)
-  name_regex = "^fedora-coreos-31.[0-9]*.[0-9]*.[0-9]*-hvm*"
 }

aws/fedora-coreos/kubernetes/workers/fcc/worker.yaml

@@ -9,11 +9,12 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Wait for DNS entries
+        Description=Wait for DNS and hostname
         Before=kubelet.service
         [Service]
         Type=oneshot
         RemainAfterExit=true
+        ExecStartPre=/bin/sh -c 'while [ `hostname -s` == "localhost" ]; do sleep 1; done;'
         ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
         [Install]
         RequiredBy=kubelet.service
@@ -21,9 +22,10 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -49,10 +51,11 @@ systemd:
           --volume /var/log:/var/log \
           --volume /var/run/lock:/var/run/lock:z \
           --volume /opt/cni/bin:/opt/cni/bin:z \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -60,10 +63,8 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           %{~ for label in split(",", node_labels) ~}
@@ -71,6 +72,7 @@ systemd:
           %{~ endfor ~}
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -87,7 +89,7 @@ systemd:
         Type=oneshot
         RemainAfterExit=true
         ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.18.2 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
+        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.18.8 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
         [Install]
         WantedBy=multi-user.target
 storage:
@@ -103,6 +105,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

aws/fedora-coreos/kubernetes/workers/variables.tf

@@ -34,9 +34,9 @@ variable "instance_type" {
   default     = "t3.small"
 }
 
-variable "os_image" {
+variable "os_stream" {
   type        = string
-  description = "AMI channel for Fedora CoreOS (not yet used)"
+  description = "Fedora CoreOs image stream for instances (e.g. stable, testing, next)"
   default     = "stable"
 }
 

aws/fedora-coreos/kubernetes/workers/versions.tf

@@ -1,4 +1,14 @@
+# Terraform version and plugin versions
 
 terraform {
-  required_version = ">= 0.12"
+  required_version = ">= 0.12.26, < 0.14.0"
+  required_providers {
+    aws      = ">= 2.23, <= 4.0"
+    template = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+  }
 }

azure/container-linux/kubernetes/README.md

@@ -11,8 +11,8 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
 * On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
 * Advanced features like [worker pools](https://typhoon.psdn.io/advanced/worker-pools/), [low-priority](https://typhoon.psdn.io/cl/azure/#low-priority) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
 * Ready for Ingress, Prometheus, Grafana, and other optional [addons](https://typhoon.psdn.io/addons/overview/)

azure/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]

azure/container-linux/kubernetes/cl/controller.yaml

@@ -2,12 +2,12 @@
 systemd:
   units:
     - name: etcd-member.service
-      enable: true
+      enabled: true
       dropins:
         - name: 40-etcd-cluster.conf
           contents: |
             [Service]
-            Environment="ETCD_IMAGE_TAG=v3.4.7"
+            Environment="ETCD_IMAGE_TAG=v3.4.10"
             Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
             Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
@@ -28,11 +28,11 @@ systemd:
             Environment="ETCD_PEER_KEY_FILE=/etc/ssl/certs/etcd/peer.key"
             Environment="ETCD_PEER_CLIENT_CERT_AUTH=true"
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -46,12 +46,14 @@ systemd:
         RequiredBy=kubelet.service
         RequiredBy=etcd-member.service
     - name: kubelet.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
+        Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -90,24 +92,24 @@ systemd:
           --mount volume=var-log,target=/var/log \
           --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
           --mount volume=opt-cni-bin,target=/opt/cni/bin \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
+          --cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -132,7 +134,7 @@ systemd:
             --volume script,kind=host,source=/opt/bootstrap/apply \
             --mount volume=script,target=/apply \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/apply
@@ -140,6 +142,11 @@ systemd:
         [Install]
         WantedBy=multi-user.target
 storage:
+  directories:
+    - path: /var/lib/etcd
+      filesystem: root
+      mode: 0700
+      overwrite: true
   files:
     - path: /etc/kubernetes/kubeconfig
       filesystem: root
@@ -161,13 +168,14 @@ storage:
           mv tls/etcd/etcd-client* /etc/kubernetes/bootstrap-secrets/
           chown -R etcd:etcd /etc/ssl/etcd
           chmod -R 500 /etc/ssl/etcd
+          chmod -R 700 /var/lib/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       filesystem: root
@@ -186,6 +194,7 @@ storage:
           done
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184

azure/container-linux/kubernetes/controllers.tf

@@ -53,18 +53,24 @@ resource "azurerm_linux_virtual_machine" "controllers" {
     storage_account_type = "Premium_LRS"
   }
 
-  // CoreOS Container Linux or Flatcar Container Linux (manual upload)
-  dynamic "source_image_reference" {
-    for_each = local.flavor == "coreos" ? [1] : []
+  # CoreOS Container Linux or Flatcar Container Linux
+  source_image_reference {
+    publisher = local.flavor == "flatcar" ? "Kinvolk" : "CoreOS"
+    offer     = local.flavor == "flatcar" ? "flatcar-container-linux-free" : "CoreOS"
+    sku       = local.channel
+    version   = "latest"
+  }
+
+  # Gross hack for Flatcar Linux
+  dynamic "plan" {
+    for_each = local.flavor == "flatcar" ? [1] : []
 
     content {
-      publisher = "CoreOS"
-      offer     = "CoreOS"
-      sku       = local.channel
-      version   = "latest"
+      name      = local.channel
+      publisher = "kinvolk"
+      product   = "flatcar-container-linux-free"
     }
   }
-  source_image_id = local.flavor == "coreos" ? null : var.os_image
 
   # network
   network_interface_ids = [
@@ -133,10 +139,10 @@ resource "azurerm_network_interface_backend_address_pool_association" "controlle
 
 # Controller Ignition configs
 data "ct_config" "controller-ignitions" {
-  count        = var.controller_count
-  content      = data.template_file.controller-configs.*.rendered[count.index]
-  pretty_print = false
-  snippets     = var.controller_snippets
+  count    = var.controller_count
+  content  = data.template_file.controller-configs.*.rendered[count.index]
+  strict   = true
+  snippets = var.controller_snippets
 }
 
 # Controller Container Linux configs
@@ -151,6 +157,7 @@ data "template_file" "controller-configs" {
     etcd_domain = "${var.cluster_name}-etcd${count.index}.${var.dns_zone}"
     # etcd0=https://cluster-etcd0.example.com,etcd1=https://cluster-etcd1.example.com,...
     etcd_initial_cluster   = join(",", data.template_file.etcds.*.rendered)
+    cgroup_driver          = local.flavor == "flatcar" && local.channel == "edge" ? "systemd" : "cgroupfs"
     kubeconfig             = indent(10, module.bootstrap.kubeconfig-kubelet)
     ssh_authorized_key     = var.ssh_authorized_key
     cluster_dns_service_ip = cidrhost(var.service_cidr, 10)

azure/container-linux/kubernetes/network.tf

@@ -21,7 +21,7 @@ resource "azurerm_subnet" "controller" {
 
   name                 = "controller"
   virtual_network_name = azurerm_virtual_network.network.name
-  address_prefix       = cidrsubnet(var.host_cidr, 1, 0)
+  address_prefixes     = [cidrsubnet(var.host_cidr, 1, 0)]
 }
 
 resource "azurerm_subnet_network_security_group_association" "controller" {
@@ -34,7 +34,7 @@ resource "azurerm_subnet" "worker" {
 
   name                 = "worker"
   virtual_network_name = azurerm_virtual_network.network.name
-  address_prefix       = cidrsubnet(var.host_cidr, 1, 1)
+  address_prefixes     = [cidrsubnet(var.host_cidr, 1, 1)]
 }
 
 resource "azurerm_subnet_network_security_group_association" "worker" {

azure/container-linux/kubernetes/security.tf

@@ -7,6 +7,21 @@ resource "azurerm_network_security_group" "controller" {
   location = azurerm_resource_group.cluster.location
 }
 
+resource "azurerm_network_security_rule" "controller-icmp" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-icmp"
+  network_security_group_name = azurerm_network_security_group.controller.name
+  priority                    = "1995"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Icmp"
+  source_port_range           = "*"
+  destination_port_range      = "*"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.controller.address_prefix
+}
+
 resource "azurerm_network_security_rule" "controller-ssh" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -100,6 +115,22 @@ resource "azurerm_network_security_rule" "controller-apiserver" {
   destination_address_prefix  = azurerm_subnet.controller.address_prefix
 }
 
+resource "azurerm_network_security_rule" "controller-cilium-health" {
+  resource_group_name = azurerm_resource_group.cluster.name
+  count               = var.networking == "cilium" ? 1 : 0
+
+  name                        = "allow-cilium-health"
+  network_security_group_name = azurerm_network_security_group.controller.name
+  priority                    = "2019"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Tcp"
+  source_port_range           = "*"
+  destination_port_range      = "4240"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.controller.address_prefix
+}
+
 resource "azurerm_network_security_rule" "controller-vxlan" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -115,6 +146,21 @@ resource "azurerm_network_security_rule" "controller-vxlan" {
   destination_address_prefix  = azurerm_subnet.controller.address_prefix
 }
 
+resource "azurerm_network_security_rule" "controller-linux-vxlan" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-linux-vxlan"
+  network_security_group_name = azurerm_network_security_group.controller.name
+  priority                    = "2021"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Udp"
+  source_port_range           = "*"
+  destination_port_range      = "8472"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.controller.address_prefix
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "azurerm_network_security_rule" "controller-node-exporter" {
   resource_group_name = azurerm_resource_group.cluster.name
@@ -191,6 +237,21 @@ resource "azurerm_network_security_group" "worker" {
   location = azurerm_resource_group.cluster.location
 }
 
+resource "azurerm_network_security_rule" "worker-icmp" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-icmp"
+  network_security_group_name = azurerm_network_security_group.worker.name
+  priority                    = "1995"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Icmp"
+  source_port_range           = "*"
+  destination_port_range      = "*"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.worker.address_prefix
+}
+
 resource "azurerm_network_security_rule" "worker-ssh" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -236,6 +297,22 @@ resource "azurerm_network_security_rule" "worker-https" {
   destination_address_prefix  = azurerm_subnet.worker.address_prefix
 }
 
+resource "azurerm_network_security_rule" "worker-cilium-health" {
+  resource_group_name = azurerm_resource_group.cluster.name
+  count               = var.networking == "cilium" ? 1 : 0
+
+  name                        = "allow-cilium-health"
+  network_security_group_name = azurerm_network_security_group.worker.name
+  priority                    = "2014"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Tcp"
+  source_port_range           = "*"
+  destination_port_range      = "4240"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.worker.address_prefix
+}
+
 resource "azurerm_network_security_rule" "worker-vxlan" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -251,6 +328,21 @@ resource "azurerm_network_security_rule" "worker-vxlan" {
   destination_address_prefix  = azurerm_subnet.worker.address_prefix
 }
 
+resource "azurerm_network_security_rule" "worker-linux-vxlan" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-linux-vxlan"
+  network_security_group_name = azurerm_network_security_group.worker.name
+  priority                    = "2016"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Udp"
+  source_port_range           = "*"
+  destination_port_range      = "8472"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.worker.address_prefix
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "azurerm_network_security_rule" "worker-node-exporter" {
   resource_group_name = azurerm_resource_group.cluster.name

azure/container-linux/kubernetes/variables.tf

@@ -48,7 +48,8 @@ variable "worker_type" {
 
 variable "os_image" {
   type        = string
-  description = "Channel for a Container Linux derivative (/subscriptions/some-flatcar-upload, coreos-stable, coreos-beta, coreos-alpha)"
+  description = "Channel for a Container Linux derivative (flatcar-stable, flatcar-beta, flatcar-alpha, flatcar-edge, coreos-stable, coreos-beta, coreos-alpha)"
+  default     = "flatcar-stable"
 }
 
 variable "disk_size" {

azure/container-linux/kubernetes/versions.tf

@@ -1,12 +1,16 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    azurerm  = "~> 2.0"
-    ct       = "~> 0.3"
+    azurerm  = "~> 2.8"
     template = "~> 2.1"
     null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
   }
 }
 

azure/container-linux/kubernetes/workers/cl/worker.yaml

@@ -2,11 +2,11 @@
 systemd:
   units:
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -19,12 +19,14 @@ systemd:
         [Install]
         RequiredBy=kubelet.service
     - name: kubelet.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
+        Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -63,18 +65,18 @@ systemd:
           --mount volume=var-log,target=/var/log \
           --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
           --mount volume=opt-cni-bin,target=/opt/cni/bin \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
+          --cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           %{~ for label in split(",", node_labels) ~}
@@ -82,6 +84,7 @@ systemd:
           %{~ endfor ~}
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -89,7 +92,7 @@ systemd:
         [Install]
         WantedBy=multi-user.target
     - name: delete-node.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Waiting to delete Kubernetes node on shutdown
@@ -110,6 +113,7 @@ storage:
           ${kubeconfig}
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
@@ -125,7 +129,7 @@ storage:
             --volume config,kind=host,source=/etc/kubernetes \
             --mount volume=config,target=/etc/kubernetes \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/usr/local/bin/kubectl -- --kubeconfig=/etc/kubernetes/kubeconfig delete node $(hostname | tr '[:upper:]' '[:lower:]')

azure/container-linux/kubernetes/workers/variables.tf

@@ -46,7 +46,7 @@ variable "vm_type" {
 
 variable "os_image" {
   type        = string
-  description = "Channel for a Container Linux derivative (flatcar-stable, flatcar-beta, coreos-stable, coreos-beta, coreos-alpha)"
+  description = "Channel for a Container Linux derivative (flatcar-stable, flatcar-beta, flatcar-alpha, flatcar-edge, coreos-stable, coreos-beta, coreos-alpha)"
   default     = "flatcar-stable"
 }
 

azure/container-linux/kubernetes/workers/versions.tf

@@ -1,4 +1,14 @@
+# Terraform version and plugin versions
 
 terraform {
-  required_version = ">= 0.12"
+  required_version = ">= 0.12.26, < 0.14.0"
+  required_providers {
+    azurerm  = "~> 2.8"
+    template = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+  }
 }

azure/container-linux/kubernetes/workers/workers.tf

@@ -24,18 +24,24 @@ resource "azurerm_linux_virtual_machine_scale_set" "workers" {
     caching              = "ReadWrite"
   }
 
-  // CoreOS Container Linux or Flatcar Container Linux (manual upload)
-  dynamic "source_image_reference" {
-    for_each = local.flavor == "coreos" ? [1] : []
+  # CoreOS Container Linux or Flatcar Container Linux
+  source_image_reference {
+    publisher = local.flavor == "flatcar" ? "Kinvolk" : "CoreOS"
+    offer     = local.flavor == "flatcar" ? "flatcar-container-linux-free" : "CoreOS"
+    sku       = local.channel
+    version   = "latest"
+  }
+
+  # Gross hack for Flatcar Linux
+  dynamic "plan" {
+    for_each = local.flavor == "flatcar" ? [1] : []
 
     content {
-      publisher = "CoreOS"
-      offer     = "CoreOS"
-      sku       = local.channel
-      version   = "latest"
+      name      = local.channel
+      publisher = "kinvolk"
+      product   = "flatcar-container-linux-free"
     }
   }
-  source_image_id = local.flavor == "coreos" ? null : var.os_image
 
   # Azure requires setting admin_ssh_key, though Ignition custom_data handles it too
   admin_username = "core"
@@ -91,9 +97,9 @@ resource "azurerm_monitor_autoscale_setting" "workers" {
 
 # Worker Ignition configs
 data "ct_config" "worker-ignition" {
-  content      = data.template_file.worker-config.rendered
-  pretty_print = false
-  snippets     = var.snippets
+  content  = data.template_file.worker-config.rendered
+  strict   = true
+  snippets = var.snippets
 }
 
 # Worker Container Linux configs
@@ -105,6 +111,7 @@ data "template_file" "worker-config" {
     ssh_authorized_key     = var.ssh_authorized_key
     cluster_dns_service_ip = cidrhost(var.service_cidr, 10)
     cluster_domain_suffix  = var.cluster_domain_suffix
+    cgroup_driver          = local.flavor == "flatcar" && local.channel == "edge" ? "systemd" : "cgroupfs"
     node_labels            = join(",", var.node_labels)
   }
 }

azure/fedora-coreos/kubernetes/README.md

@@ -11,9 +11,9 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
-* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
+* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/), SELinux enforcing
 * Advanced features like [worker pools](https://typhoon.psdn.io/advanced/worker-pools/), [spot priority](https://typhoon.psdn.io/fedora-coreos/azure/#low-priority) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/) customization
 * Ready for Ingress, Prometheus, Grafana, and other optional [addons](https://typhoon.psdn.io/addons/overview/)
 

azure/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
@@ -10,8 +10,9 @@ module "bootstrap" {
   networking = var.networking
 
   # only effective with Calico networking
+  # we should be able to use 1450 MTU, but in practice, 1410 was needed
   network_encapsulation = "vxlan"
-  network_mtu           = "1450"
+  network_mtu           = "1410"
 
   pod_cidr              = var.pod_cidr
   service_cidr          = var.service_cidr

azure/fedora-coreos/kubernetes/controllers.tf

@@ -113,10 +113,10 @@ resource "azurerm_network_interface_backend_address_pool_association" "controlle
 
 # Controller Ignition configs
 data "ct_config" "controller-ignitions" {
-  count        = var.controller_count
-  content      = data.template_file.controller-configs.*.rendered[count.index]
-  pretty_print = false
-  snippets     = var.controller_snippets
+  count    = var.controller_count
+  content  = data.template_file.controller-configs.*.rendered[count.index]
+  strict   = true
+  snippets = var.controller_snippets
 }
 
 # Controller Fedora CoreOS configs

azure/fedora-coreos/kubernetes/fcc/controller.yaml

@@ -28,7 +28,7 @@ systemd:
           --network host \
           --volume /var/lib/etcd:/var/lib/etcd:rw,Z \
           --volume /etc/ssl/etcd:/etc/ssl/certs:ro,Z \
-          quay.io/coreos/etcd:v3.4.7
+          quay.io/coreos/etcd:v3.4.10
         ExecStop=/usr/bin/podman stop etcd
         [Install]
         WantedBy=multi-user.target
@@ -51,9 +51,10 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -79,10 +80,11 @@ systemd:
           --volume /var/log:/var/log \
           --volume /var/run/lock:/var/run/lock:z \
           --volume /opt/cni/bin:/opt/cni/bin:z \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -90,16 +92,14 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -123,11 +123,13 @@ systemd:
             --volume /opt/bootstrap/assets:/assets:ro,Z \
             --volume /opt/bootstrap/apply:/apply:ro,Z \
             --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.18.2
+            quay.io/poseidon/kubelet:v1.18.8
         ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
         ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
   directories:
+    - path: /var/lib/etcd
+      mode: 0700
     - path: /etc/kubernetes
     - path: /opt/bootstrap
   files:
@@ -151,11 +153,11 @@ storage:
           chmod -R 500 /etc/ssl/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       mode: 0544
@@ -175,6 +177,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

azure/fedora-coreos/kubernetes/network.tf

@@ -21,7 +21,7 @@ resource "azurerm_subnet" "controller" {
 
   name                 = "controller"
   virtual_network_name = azurerm_virtual_network.network.name
-  address_prefix       = cidrsubnet(var.host_cidr, 1, 0)
+  address_prefixes     = [cidrsubnet(var.host_cidr, 1, 0)]
 }
 
 resource "azurerm_subnet_network_security_group_association" "controller" {
@@ -34,7 +34,7 @@ resource "azurerm_subnet" "worker" {
 
   name                 = "worker"
   virtual_network_name = azurerm_virtual_network.network.name
-  address_prefix       = cidrsubnet(var.host_cidr, 1, 1)
+  address_prefixes     = [cidrsubnet(var.host_cidr, 1, 1)]
 }
 
 resource "azurerm_subnet_network_security_group_association" "worker" {

azure/fedora-coreos/kubernetes/security.tf

@@ -7,6 +7,21 @@ resource "azurerm_network_security_group" "controller" {
   location = azurerm_resource_group.cluster.location
 }
 
+resource "azurerm_network_security_rule" "controller-icmp" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-icmp"
+  network_security_group_name = azurerm_network_security_group.controller.name
+  priority                    = "1995"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Icmp"
+  source_port_range           = "*"
+  destination_port_range      = "*"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.controller.address_prefix
+}
+
 resource "azurerm_network_security_rule" "controller-ssh" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -100,6 +115,22 @@ resource "azurerm_network_security_rule" "controller-apiserver" {
   destination_address_prefix  = azurerm_subnet.controller.address_prefix
 }
 
+resource "azurerm_network_security_rule" "controller-cilium-health" {
+  resource_group_name = azurerm_resource_group.cluster.name
+  count               = var.networking == "cilium" ? 1 : 0
+
+  name                        = "allow-cilium-health"
+  network_security_group_name = azurerm_network_security_group.controller.name
+  priority                    = "2019"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Tcp"
+  source_port_range           = "*"
+  destination_port_range      = "4240"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.controller.address_prefix
+}
+
 resource "azurerm_network_security_rule" "controller-vxlan" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -115,6 +146,21 @@ resource "azurerm_network_security_rule" "controller-vxlan" {
   destination_address_prefix  = azurerm_subnet.controller.address_prefix
 }
 
+resource "azurerm_network_security_rule" "controller-linux-vxlan" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-linux-vxlan"
+  network_security_group_name = azurerm_network_security_group.controller.name
+  priority                    = "2021"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Udp"
+  source_port_range           = "*"
+  destination_port_range      = "8472"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.controller.address_prefix
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "azurerm_network_security_rule" "controller-node-exporter" {
   resource_group_name = azurerm_resource_group.cluster.name
@@ -191,6 +237,21 @@ resource "azurerm_network_security_group" "worker" {
   location = azurerm_resource_group.cluster.location
 }
 
+resource "azurerm_network_security_rule" "worker-icmp" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-icmp"
+  network_security_group_name = azurerm_network_security_group.worker.name
+  priority                    = "1995"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Icmp"
+  source_port_range           = "*"
+  destination_port_range      = "*"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.worker.address_prefix
+}
+
 resource "azurerm_network_security_rule" "worker-ssh" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -236,6 +297,22 @@ resource "azurerm_network_security_rule" "worker-https" {
   destination_address_prefix  = azurerm_subnet.worker.address_prefix
 }
 
+resource "azurerm_network_security_rule" "worker-cilium-health" {
+  resource_group_name = azurerm_resource_group.cluster.name
+  count               = var.networking == "cilium" ? 1 : 0
+
+  name                        = "allow-cilium-health"
+  network_security_group_name = azurerm_network_security_group.worker.name
+  priority                    = "2014"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Tcp"
+  source_port_range           = "*"
+  destination_port_range      = "4240"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.worker.address_prefix
+}
+
 resource "azurerm_network_security_rule" "worker-vxlan" {
   resource_group_name = azurerm_resource_group.cluster.name
 
@@ -251,6 +328,21 @@ resource "azurerm_network_security_rule" "worker-vxlan" {
   destination_address_prefix  = azurerm_subnet.worker.address_prefix
 }
 
+resource "azurerm_network_security_rule" "worker-linux-vxlan" {
+  resource_group_name = azurerm_resource_group.cluster.name
+
+  name                        = "allow-linux-vxlan"
+  network_security_group_name = azurerm_network_security_group.worker.name
+  priority                    = "2016"
+  access                      = "Allow"
+  direction                   = "Inbound"
+  protocol                    = "Udp"
+  source_port_range           = "*"
+  destination_port_range      = "8472"
+  source_address_prefixes     = [azurerm_subnet.controller.address_prefix, azurerm_subnet.worker.address_prefix]
+  destination_address_prefix  = azurerm_subnet.worker.address_prefix
+}
+
 # Allow Prometheus to scrape node-exporter daemonset
 resource "azurerm_network_security_rule" "worker-node-exporter" {
   resource_group_name = azurerm_resource_group.cluster.name

azure/fedora-coreos/kubernetes/versions.tf

@@ -1,12 +1,16 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    azurerm  = "~> 2.0"
-    ct       = "~> 0.3"
+    azurerm  = "~> 2.8"
     template = "~> 2.1"
     null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
   }
 }
 

azure/fedora-coreos/kubernetes/workers/fcc/worker.yaml

@@ -21,9 +21,10 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -49,10 +50,11 @@ systemd:
           --volume /var/log:/var/log \
           --volume /var/run/lock:/var/run/lock:z \
           --volume /opt/cni/bin:/opt/cni/bin:z \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -60,10 +62,8 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           %{~ for label in split(",", node_labels) ~}
@@ -71,6 +71,7 @@ systemd:
           %{~ endfor ~}
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -87,7 +88,7 @@ systemd:
         Type=oneshot
         RemainAfterExit=true
         ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.18.2 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
+        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.18.8 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
         [Install]
         WantedBy=multi-user.target
 storage:
@@ -103,6 +104,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

azure/fedora-coreos/kubernetes/workers/versions.tf

@@ -1,4 +1,14 @@
+# Terraform version and plugin versions
 
 terraform {
-  required_version = ">= 0.12"
+  required_version = ">= 0.12.26, < 0.14.0"
+  required_providers {
+    azurerm  = "~> 2.8"
+    template = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+  }
 }

azure/fedora-coreos/kubernetes/workers/workers.tf

@@ -72,9 +72,9 @@ resource "azurerm_monitor_autoscale_setting" "workers" {
 
 # Worker Ignition configs
 data "ct_config" "worker-ignition" {
-  content      = data.template_file.worker-config.rendered
-  pretty_print = false
-  snippets     = var.snippets
+  content  = data.template_file.worker-config.rendered
+  strict   = true
+  snippets = var.snippets
 }
 
 # Worker Fedora CoreOS configs

bare-metal/container-linux/kubernetes/README.md

@@ -11,8 +11,8 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
 * On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
 * Advanced features like [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
 * Ready for Ingress, Prometheus, Grafana, and other optional [addons](https://typhoon.psdn.io/addons/overview/)

bare-metal/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name                    = var.cluster_name
   api_servers                     = [var.k8s_domain_name]

bare-metal/container-linux/kubernetes/cl/controller.yaml

@@ -2,12 +2,12 @@
 systemd:
   units:
     - name: etcd-member.service
-      enable: true
+      enabled: true
       dropins:
         - name: 40-etcd-cluster.conf
           contents: |
             [Service]
-            Environment="ETCD_IMAGE_TAG=v3.4.7"
+            Environment="ETCD_IMAGE_TAG=v3.4.10"
             Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
             Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
@@ -28,11 +28,11 @@ systemd:
             Environment="ETCD_PEER_KEY_FILE=/etc/ssl/certs/etcd/peer.key"
             Environment="ETCD_PEER_CLIENT_CERT_AUTH=true"
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: kubelet.path
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Watch for kubeconfig
@@ -41,7 +41,7 @@ systemd:
         [Install]
         WantedBy=multi-user.target
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -57,9 +57,10 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
         Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -103,26 +104,25 @@ systemd:
           --mount volume=etc-iscsi,target=/etc/iscsi \
           --volume usr-sbin-iscsiadm,kind=host,source=/usr/sbin/iscsiadm \
           --mount volume=usr-sbin-iscsiadm,target=/sbin/iscsiadm \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=${domain_name} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -147,7 +147,7 @@ systemd:
             --volume script,kind=host,source=/opt/bootstrap/apply \
             --mount volume=script,target=/apply \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/apply
@@ -156,8 +156,13 @@ systemd:
         WantedBy=multi-user.target
 storage:
   directories:
+    - path: /var/lib/etcd
+      filesystem: root
+      mode: 0700
+      overwrite: true
     - path: /etc/kubernetes
       filesystem: root
+      mode: 0755
   files:
     - path: /etc/hostname
       filesystem: root
@@ -179,13 +184,14 @@ storage:
           mv tls/etcd/etcd-client* /etc/kubernetes/bootstrap-secrets/
           chown -R etcd:etcd /etc/ssl/etcd
           chmod -R 500 /etc/ssl/etcd
+          chmod -R 700 /var/lib/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       filesystem: root
@@ -204,6 +210,7 @@ storage:
           done
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184

bare-metal/container-linux/kubernetes/cl/install.yaml

@@ -2,7 +2,7 @@
 systemd:
   units:
     - name: installer.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Requires=network-online.target

bare-metal/container-linux/kubernetes/cl/worker.yaml

@@ -2,11 +2,11 @@
 systemd:
   units:
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: kubelet.path
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Watch for kubeconfig
@@ -15,7 +15,7 @@ systemd:
         [Install]
         WantedBy=multi-user.target
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -30,9 +30,10 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
         Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -76,20 +77,19 @@ systemd:
           --mount volume=etc-iscsi,target=/etc/iscsi \
           --volume usr-sbin-iscsiadm,kind=host,source=/usr/sbin/iscsiadm \
           --mount volume=usr-sbin-iscsiadm,target=/sbin/iscsiadm \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=${domain_name} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           %{~ for label in compact(split(",", node_labels)) ~}
@@ -100,6 +100,7 @@ systemd:
           %{~ endfor ~}
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -111,6 +112,7 @@ storage:
   directories:
     - path: /etc/kubernetes
       filesystem: root
+      mode: 0755
   files:
     - path: /etc/hostname
       filesystem: root
@@ -120,6 +122,7 @@ storage:
           ${domain_name}
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184

bare-metal/container-linux/kubernetes/profiles.tf

@@ -141,10 +141,10 @@ resource "matchbox_profile" "controllers" {
 }
 
 data "ct_config" "controller-ignitions" {
-  count        = length(var.controllers)
-  content      = data.template_file.controller-configs.*.rendered[count.index]
-  pretty_print = false
-  snippets     = lookup(var.snippets, var.controllers.*.name[count.index], [])
+  count    = length(var.controllers)
+  content  = data.template_file.controller-configs.*.rendered[count.index]
+  strict   = true
+  snippets = lookup(var.snippets, var.controllers.*.name[count.index], [])
 }
 
 data "template_file" "controller-configs" {
@@ -171,10 +171,10 @@ resource "matchbox_profile" "workers" {
 }
 
 data "ct_config" "worker-ignitions" {
-  count        = length(var.workers)
-  content      = data.template_file.worker-configs.*.rendered[count.index]
-  pretty_print = false
-  snippets     = lookup(var.snippets, var.workers.*.name[count.index], [])
+  count    = length(var.workers)
+  content  = data.template_file.worker-configs.*.rendered[count.index]
+  strict   = true
+  snippets = lookup(var.snippets, var.workers.*.name[count.index], [])
 }
 
 data "template_file" "worker-configs" {

bare-metal/container-linux/kubernetes/versions.tf

@@ -1,12 +1,20 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    matchbox = "~> 0.3.0"
-    ct       = "~> 0.3"
     template = "~> 2.1"
     null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+
+    matchbox = {
+      source  = "poseidon/matchbox"
+      version = "~> 0.4.1"
+    }
   }
 }
 

bare-metal/fedora-coreos/kubernetes/README.md

@@ -11,9 +11,9 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
-* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
+* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/), SELinux enforcing
 * Advanced features like [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
 * Ready for Ingress, Prometheus, Grafana, and other optional [addons](https://typhoon.psdn.io/addons/overview/)
 

bare-metal/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name                    = var.cluster_name
   api_servers                     = [var.k8s_domain_name]

bare-metal/fedora-coreos/kubernetes/fcc/controller.yaml

@@ -28,7 +28,7 @@ systemd:
           --network host \
           --volume /var/lib/etcd:/var/lib/etcd:rw,Z \
           --volume /etc/ssl/etcd:/etc/ssl/certs:ro,Z \
-          quay.io/coreos/etcd:v3.4.7
+          quay.io/coreos/etcd:v3.4.10
         ExecStop=/usr/bin/podman stop etcd
         [Install]
         WantedBy=multi-user.target
@@ -50,9 +50,10 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -80,10 +81,11 @@ systemd:
           --volume /opt/cni/bin:/opt/cni/bin:z \
           --volume /etc/iscsi:/etc/iscsi \
           --volume /sbin/iscsiadm:/sbin/iscsiadm \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -91,17 +93,15 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=${domain_name} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -134,11 +134,13 @@ systemd:
             --volume /opt/bootstrap/assets:/assets:ro,Z \
             --volume /opt/bootstrap/apply:/apply:ro,Z \
             --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.18.2
+            quay.io/poseidon/kubelet:v1.18.8
         ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
         ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
   directories:
+    - path: /var/lib/etcd
+      mode: 0700
     - path: /etc/kubernetes
     - path: /opt/bootstrap
   files:
@@ -162,11 +164,11 @@ storage:
           chmod -R 500 /etc/ssl/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       mode: 0544
@@ -186,6 +188,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

bare-metal/fedora-coreos/kubernetes/fcc/worker.yaml

@@ -20,9 +20,10 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/bin/mkdir -p /opt/cni/bin
@@ -50,10 +51,11 @@ systemd:
           --volume /opt/cni/bin:/opt/cni/bin:z \
           --volume /etc/iscsi:/etc/iscsi \
           --volume /sbin/iscsiadm:/sbin/iscsiadm \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -61,11 +63,9 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=${domain_name} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           %{~ for label in compact(split(",", node_labels)) ~}
@@ -76,6 +76,7 @@ systemd:
           %{~ endfor ~}
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -105,6 +106,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

bare-metal/fedora-coreos/kubernetes/versions.tf

@@ -1,11 +1,19 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    matchbox = "~> 0.3.0"
-    ct       = "~> 0.4"
     template = "~> 2.1"
     null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+
+    matchbox = {
+      source  = "poseidon/matchbox"
+      version = "~> 0.4.1"
+    }
   }
 }

digital-ocean/container-linux/kubernetes/README.md

@@ -11,8 +11,8 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
-* Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
+* Kubernetes v1.18.8 (upstream)
+* Single or multi-master, [Calico](https://www.projectcalico.org/) or [Cilium](https://github.com/cilium/cilium) or [flannel](https://github.com/coreos/flannel) networking
 * On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
 * Advanced features like [snippets](https://typhoon.psdn.io/advanced/customization/#container-linux) customization
 * Ready for Ingress, Prometheus, Grafana, CSI, and other [addons](https://typhoon.psdn.io/addons/overview/)

digital-ocean/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]

digital-ocean/container-linux/kubernetes/cl/controller.yaml

@@ -2,12 +2,12 @@
 systemd:
   units:
     - name: etcd-member.service
-      enable: true
+      enabled: true
       dropins:
         - name: 40-etcd-cluster.conf
           contents: |
             [Service]
-            Environment="ETCD_IMAGE_TAG=v3.4.7"
+            Environment="ETCD_IMAGE_TAG=v3.4.10"
             Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
             Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
@@ -28,11 +28,11 @@ systemd:
             Environment="ETCD_PEER_KEY_FILE=/etc/ssl/certs/etcd/peer.key"
             Environment="ETCD_PEER_CLIENT_CERT_AUTH=true"
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: kubelet.path
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Watch for kubeconfig
@@ -41,7 +41,7 @@ systemd:
         [Install]
         WantedBy=multi-user.target
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -57,11 +57,12 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Requires=coreos-metadata.service
         After=coreos-metadata.service
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
         EnvironmentFile=/run/metadata/coreos
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -101,25 +102,24 @@ systemd:
           --mount volume=var-log,target=/var/log \
           --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
           --mount volume=opt-cni-bin,target=/opt/cni/bin \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=$${COREOS_DIGITALOCEAN_IPV4_PRIVATE_0} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -144,7 +144,7 @@ systemd:
             --volume script,kind=host,source=/opt/bootstrap/apply \
             --mount volume=script,target=/apply \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/apply
@@ -153,8 +153,13 @@ systemd:
         WantedBy=multi-user.target
 storage:
   directories:
+    - path: /var/lib/etcd
+      filesystem: root
+      mode: 0700
+      overwrite: true
     - path: /etc/kubernetes
       filesystem: root
+      mode: 0755
   files:
     - path: /opt/bootstrap/layout
       filesystem: root
@@ -170,13 +175,14 @@ storage:
           mv tls/etcd/etcd-client* /etc/kubernetes/bootstrap-secrets/
           chown -R etcd:etcd /etc/ssl/etcd
           chmod -R 500 /etc/ssl/etcd
+          chmod -R 700 /var/lib/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       filesystem: root
@@ -195,6 +201,7 @@ storage:
           done
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184

digital-ocean/container-linux/kubernetes/cl/worker.yaml

@@ -2,11 +2,11 @@
 systemd:
   units:
     - name: docker.service
-      enable: true
+      enabled: true
     - name: locksmithd.service
       mask: true
     - name: kubelet.path
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Watch for kubeconfig
@@ -15,7 +15,7 @@ systemd:
         [Install]
         WantedBy=multi-user.target
     - name: wait-for-dns.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Wait for DNS entries
@@ -30,11 +30,12 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube
+        Description=Kubelet
         Requires=coreos-metadata.service
         After=coreos-metadata.service
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.8
         EnvironmentFile=/run/metadata/coreos
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -74,23 +75,23 @@ systemd:
           --mount volume=var-log,target=/var/log \
           --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
           --mount volume=opt-cni-bin,target=/opt/cni/bin \
-          docker://quay.io/poseidon/kubelet:v1.18.2 -- \
+          $${KUBELET_IMAGE} -- \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --client-ca-file=/etc/kubernetes/ca.crt \
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=$${COREOS_DIGITALOCEAN_IPV4_PRIVATE_0} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
         Restart=always
@@ -98,7 +99,7 @@ systemd:
         [Install]
         WantedBy=multi-user.target
     - name: delete-node.service
-      enable: true
+      enabled: true
       contents: |
         [Unit]
         Description=Waiting to delete Kubernetes node on shutdown
@@ -113,9 +114,11 @@ storage:
   directories:
     - path: /etc/kubernetes
       filesystem: root
+      mode: 0755
   files:
     - path: /etc/sysctl.d/max-user-watches.conf
       filesystem: root
+      mode: 0644
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
@@ -131,7 +134,7 @@ storage:
             --volume config,kind=host,source=/etc/kubernetes \
             --mount volume=config,target=/etc/kubernetes \
             --insecure-options=image \
-            docker://quay.io/poseidon/kubelet:v1.18.2 \
+            docker://quay.io/poseidon/kubelet:v1.18.8 \
             --net=host \
             --dns=host \
             --exec=/usr/local/bin/kubectl -- --kubeconfig=/etc/kubernetes/kubeconfig delete node $(hostname)

digital-ocean/container-linux/kubernetes/controllers.tf

@@ -46,9 +46,10 @@ resource "digitalocean_droplet" "controllers" {
   size  = var.controller_type
 
   # network
-  # only official DigitalOcean images support IPv6
-  ipv6               = local.is_official_image
   private_networking = true
+  vpc_uuid           = digitalocean_vpc.network.id
+  # TODO: Only official DigitalOcean images support IPv6
+  ipv6 = false
 
   user_data = data.ct_config.controller-ignitions.*.rendered[count.index]
   ssh_keys  = var.ssh_fingerprints
@@ -69,10 +70,10 @@ resource "digitalocean_tag" "controllers" {
 
 # Controller Ignition configs
 data "ct_config" "controller-ignitions" {
-  count        = var.controller_count
-  content      = data.template_file.controller-configs.*.rendered[count.index]
-  pretty_print = false
-  snippets     = var.controller_snippets
+  count    = var.controller_count
+  content  = data.template_file.controller-configs.*.rendered[count.index]
+  strict   = true
+  snippets = var.controller_snippets
 }
 
 # Controller Container Linux configs

digital-ocean/container-linux/kubernetes/network.tf

@@ -1,3 +1,10 @@
+# Network VPC
+resource "digitalocean_vpc" "network" {
+  name        = var.cluster_name
+  region      = var.region
+  description = "Network for ${var.cluster_name} cluster"
+}
+
 resource "digitalocean_firewall" "rules" {
   name = var.cluster_name
 
@@ -6,6 +13,11 @@ resource "digitalocean_firewall" "rules" {
     digitalocean_tag.workers.name
   ]
 
+  inbound_rule {
+    protocol    = "icmp"
+    source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
+  }
+
   # allow ssh, internal flannel, internal node-exporter, internal kubelet
   inbound_rule {
     protocol         = "tcp"
@@ -13,12 +25,27 @@ resource "digitalocean_firewall" "rules" {
     source_addresses = ["0.0.0.0/0", "::/0"]
   }
 
+  # Cilium health
+  inbound_rule {
+    protocol    = "tcp"
+    port_range  = "4240"
+    source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
+  }
+
+  # IANA vxlan (flannel, calico)
   inbound_rule {
     protocol    = "udp"
     port_range  = "4789"
     source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
   }
 
+  # Linux vxlan (Cilium)
+  inbound_rule {
+    protocol    = "udp"
+    port_range  = "8472"
+    source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
+  }
+
   # Allow Prometheus to scrape node-exporter
   inbound_rule {
     protocol    = "tcp"
@@ -33,6 +60,7 @@ resource "digitalocean_firewall" "rules" {
     source_tags = [digitalocean_tag.workers.name]
   }
 
+  # Kubelet
   inbound_rule {
     protocol    = "tcp"
     port_range  = "10250"

digital-ocean/container-linux/kubernetes/outputs.tf

@@ -2,6 +2,8 @@ output "kubeconfig-admin" {
   value = module.bootstrap.kubeconfig-admin
 }
 
+# Outputs for Kubernetes Ingress
+
 output "controllers_dns" {
   value = digitalocean_record.controllers[0].fqdn
 }
@@ -45,3 +47,10 @@ output "worker_tag" {
   value       = digitalocean_tag.workers.name
 }
 
+# Outputs for custom load balancing
+
+output "vpc_id" {
+  description = "ID of the cluster VPC"
+  value       = digitalocean_vpc.network.id
+}
+

digital-ocean/container-linux/kubernetes/versions.tf

@@ -1,12 +1,20 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    digitalocean = "~> 1.3"
-    ct           = "~> 0.3"
-    template     = "~> 2.1"
-    null         = "~> 2.1"
+    template = "~> 2.1"
+    null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+
+    digitalocean = {
+      source  = "digitalocean/digitalocean"
+      version = "~> 1.20"
+    }
   }
 }
 

digital-ocean/container-linux/kubernetes/workers.tf

@@ -35,9 +35,10 @@ resource "digitalocean_droplet" "workers" {
   size  = var.worker_type
 
   # network
-  # only official DigitalOcean images support IPv6
-  ipv6               = local.is_official_image
   private_networking = true
+  vpc_uuid           = digitalocean_vpc.network.id
+  # only official DigitalOcean images support IPv6
+  ipv6 = local.is_official_image
 
   user_data = data.ct_config.worker-ignition.rendered
   ssh_keys  = var.ssh_fingerprints
@@ -58,9 +59,9 @@ resource "digitalocean_tag" "workers" {
 
 # Worker Ignition config
 data "ct_config" "worker-ignition" {
-  content      = data.template_file.worker-config.rendered
-  pretty_print = false
-  snippets     = var.worker_snippets
+  content  = data.template_file.worker-config.rendered
+  strict   = true
+  snippets = var.worker_snippets
 }
 
 # Worker Container Linux config

digital-ocean/fedora-coreos/kubernetes/README.md

@@ -11,9 +11,9 @@ Typhoon distributes upstream Kubernetes, architectural conventions, and cluster
 
 ## Features <a href="https://www.cncf.io/certification/software-conformance/"><img align="right" src="https://storage.googleapis.com/poseidon/certified-kubernetes.png"></a>
 
-* Kubernetes v1.18.2 (upstream)
+* Kubernetes v1.18.8 (upstream)
 * Single or multi-master, [Calico](https://www.projectcalico.org/) or [flannel](https://github.com/coreos/flannel) networking
-* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/)
+* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, [network policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/), SELinux enforcing
 * Advanced features like [snippets](https://typhoon.psdn.io/advanced/customization/) customization
 * Ready for Ingress, Prometheus, Grafana, CSI, and other [addons](https://typhoon.psdn.io/addons/overview/)
 

digital-ocean/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=14d0b2087962a0f2557c184f3f523548ce19bbdc"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8ef2fe7c992a8c15d696bd3e3a97be713b025e64"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]

digital-ocean/fedora-coreos/kubernetes/controllers.tf

@@ -41,9 +41,10 @@ resource "digitalocean_droplet" "controllers" {
   size  = var.controller_type
 
   # network
-  # TODO: Only official DigitalOcean images support IPv6
-  ipv6               = false
   private_networking = true
+  vpc_uuid           = digitalocean_vpc.network.id
+  # TODO: Only official DigitalOcean images support IPv6
+  ipv6 = false
 
   user_data = data.ct_config.controller-ignitions.*.rendered[count.index]
   ssh_keys  = var.ssh_fingerprints
@@ -64,10 +65,10 @@ resource "digitalocean_tag" "controllers" {
 
 # Controller Ignition configs
 data "ct_config" "controller-ignitions" {
-  count        = var.controller_count
-  content      = data.template_file.controller-configs.*.rendered[count.index]
-  strict       = true
-  snippets     = var.controller_snippets
+  count    = var.controller_count
+  content  = data.template_file.controller-configs.*.rendered[count.index]
+  strict   = true
+  snippets = var.controller_snippets
 }
 
 # Controller Fedora CoreOS configs

digital-ocean/fedora-coreos/kubernetes/fcc/controller.yaml

@@ -28,7 +28,7 @@ systemd:
           --network host \
           --volume /var/lib/etcd:/var/lib/etcd:rw,Z \
           --volume /etc/ssl/etcd:/etc/ssl/certs:ro,Z \
-          quay.io/coreos/etcd:v3.4.7
+          quay.io/coreos/etcd:v3.4.10
         ExecStop=/usr/bin/podman stop etcd
         [Install]
         WantedBy=multi-user.target
@@ -50,11 +50,12 @@ systemd:
     - name: kubelet.service
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Requires=afterburn.service
         After=afterburn.service
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         EnvironmentFile=/run/metadata/afterburn
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -81,10 +82,11 @@ systemd:
           --volume /var/log:/var/log \
           --volume /var/run/lock:/var/run/lock:z \
           --volume /opt/cni/bin:/opt/cni/bin:z \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -92,17 +94,15 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=$${AFTERBURN_DIGITALOCEAN_IPV4_PRIVATE_0} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
-          --node-labels=node.kubernetes.io/master \
           --node-labels=node.kubernetes.io/controller="true" \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
-          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
+          --register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -135,11 +135,13 @@ systemd:
             --volume /opt/bootstrap/assets:/assets:ro,Z \
             --volume /opt/bootstrap/apply:/apply:ro,Z \
             --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.18.2
+            quay.io/poseidon/kubelet:v1.18.8
         ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
         ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
   directories:
+    - path: /var/lib/etcd
+      mode: 0700
     - path: /etc/kubernetes
     - path: /opt/bootstrap
   files:
@@ -158,11 +160,11 @@ storage:
           chmod -R 500 /etc/ssl/etcd
           mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
           mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
-          sudo mkdir -p /etc/kubernetes/manifests
-          sudo mv static-manifests/* /etc/kubernetes/manifests/
-          sudo mkdir -p /opt/bootstrap/assets
-          sudo mv manifests /opt/bootstrap/assets/manifests
-          sudo mv manifests-networking/* /opt/bootstrap/assets/manifests/
+          mkdir -p /etc/kubernetes/manifests
+          mv static-manifests/* /etc/kubernetes/manifests/
+          mkdir -p /opt/bootstrap/assets
+          mv manifests /opt/bootstrap/assets/manifests
+          mv manifests-networking/* /opt/bootstrap/assets/manifests/
           rm -rf assets auth static-manifests tls manifests-networking
     - path: /opt/bootstrap/apply
       mode: 0544
@@ -182,6 +184,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

digital-ocean/fedora-coreos/kubernetes/fcc/worker.yaml

@@ -21,11 +21,12 @@ systemd:
       enabled: true
       contents: |
         [Unit]
-        Description=Kubelet via Hyperkube (System Container)
+        Description=Kubelet (System Container)
         Requires=afterburn.service
         After=afterburn.service
         Wants=rpc-statd.service
         [Service]
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.18.8
         EnvironmentFile=/run/metadata/afterburn
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@@ -52,10 +53,11 @@ systemd:
           --volume /var/log:/var/log \
           --volume /var/run/lock:/var/run/lock:z \
           --volume /opt/cni/bin:/opt/cni/bin:z \
-          quay.io/poseidon/kubelet:v1.18.2 \
+          $${KUBELET_IMAGE} \
           --anonymous-auth=false \
           --authentication-token-webhook \
           --authorization-mode=Webhook \
+          --bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
           --cgroup-driver=systemd \
           --cgroups-per-qos=true \
           --enforce-node-allocatable=pods \
@@ -63,15 +65,14 @@ systemd:
           --cluster_dns=${cluster_dns_service_ip} \
           --cluster_domain=${cluster_domain_suffix} \
           --cni-conf-dir=/etc/kubernetes/cni/net.d \
-          --exit-on-lock-contention \
           --healthz-port=0 \
           --hostname-override=$${AFTERBURN_DIGITALOCEAN_IPV4_PRIVATE_0} \
-          --kubeconfig=/etc/kubernetes/kubeconfig \
-          --lock-file=/var/run/lock/kubelet.lock \
+          --kubeconfig=/var/lib/kubelet/kubeconfig \
           --network-plugin=cni \
           --node-labels=node.kubernetes.io/node \
           --pod-manifest-path=/etc/kubernetes/manifests \
           --read-only-port=0 \
+          --rotate-certificates \
           --volume-plugin-dir=/var/lib/kubelet/volumeplugins
         ExecStop=-/usr/bin/podman stop kubelet
         Delegate=yes
@@ -97,7 +98,7 @@ systemd:
         Type=oneshot
         RemainAfterExit=true
         ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.18.2 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
+        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.18.8 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
         [Install]
         WantedBy=multi-user.target
 storage:
@@ -108,6 +109,18 @@ storage:
       contents:
         inline: |
           fs.inotify.max_user_watches=16184
+    - path: /etc/sysctl.d/reverse-path-filter.conf
+      contents:
+        inline: |
+          net.ipv4.conf.default.rp_filter=0
+          net.ipv4.conf.*.rp_filter=0
+    - path: /etc/systemd/network/50-flannel.link
+      contents:
+        inline: |
+          [Match]
+          OriginalName=flannel*
+          [Link]
+          MACAddressPolicy=none
     - path: /etc/systemd/system.conf.d/accounting.conf
       contents:
         inline: |

digital-ocean/fedora-coreos/kubernetes/network.tf

@@ -1,3 +1,10 @@
+# Network VPC
+resource "digitalocean_vpc" "network" {
+  name        = var.cluster_name
+  region      = var.region
+  description = "Network for ${var.cluster_name} cluster"
+}
+
 resource "digitalocean_firewall" "rules" {
   name = var.cluster_name
 
@@ -6,6 +13,11 @@ resource "digitalocean_firewall" "rules" {
     digitalocean_tag.workers.name
   ]
 
+  inbound_rule {
+    protocol    = "icmp"
+    source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
+  }
+
   # allow ssh, internal flannel, internal node-exporter, internal kubelet
   inbound_rule {
     protocol         = "tcp"
@@ -13,12 +25,27 @@ resource "digitalocean_firewall" "rules" {
     source_addresses = ["0.0.0.0/0", "::/0"]
   }
 
+  # Cilium health
+  inbound_rule {
+    protocol    = "tcp"
+    port_range  = "4240"
+    source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
+  }
+
+  # IANA vxlan (flannel, calico)
   inbound_rule {
     protocol    = "udp"
     port_range  = "4789"
     source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
   }
 
+  # Linux vxlan (Cilium)
+  inbound_rule {
+    protocol    = "udp"
+    port_range  = "8472"
+    source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
+  }
+
   # Allow Prometheus to scrape node-exporter
   inbound_rule {
     protocol    = "tcp"
@@ -33,6 +60,7 @@ resource "digitalocean_firewall" "rules" {
     source_tags = [digitalocean_tag.workers.name]
   }
 
+  # Kubelet
   inbound_rule {
     protocol    = "tcp"
     port_range  = "10250"

digital-ocean/fedora-coreos/kubernetes/outputs.tf

@@ -2,6 +2,8 @@ output "kubeconfig-admin" {
   value = module.bootstrap.kubeconfig-admin
 }
 
+# Outputs for Kubernetes Ingress
+
 output "controllers_dns" {
   value = digitalocean_record.controllers[0].fqdn
 }
@@ -45,3 +47,9 @@ output "worker_tag" {
   value       = digitalocean_tag.workers.name
 }
 
+# Outputs for custom load balancing
+
+output "vpc_id" {
+  description = "ID of the cluster VPC"
+  value       = digitalocean_vpc.network.id
+}

digital-ocean/fedora-coreos/kubernetes/versions.tf

@@ -1,12 +1,20 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = "~> 0.12.6"
+  required_version = ">= 0.12.26, < 0.14.0"
   required_providers {
-    digitalocean = "~> 1.3"
-    ct           = "~> 0.3"
-    template     = "~> 2.1"
-    null         = "~> 2.1"
+    template = "~> 2.1"
+    null     = "~> 2.1"
+
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6.1"
+    }
+
+    digitalocean = {
+      source  = "digitalocean/digitalocean"
+      version = "~> 1.20"
+    }
   }
 }