Adding install_snippets support.

During the "real" first boot (install boot), we need tu run butane config to manipulate disks, so we add install_snippets variable to do so. This snippets are added to the install.yaml butane configuration
Update docs on flatcar-linux bare-metal kubernetes worker module usage.
2025-08-01 19:51:35 +02:00 · 2023-08-03 14:16:24 +02:00 · 2023-08-02 12:07:53 +02:00 · 2023-07-30 09:36:23 -07:00 · 2023-07-24 19:46:01 -07:00 · 2023-07-21 08:00:50 -07:00
113 changed files with 1318 additions and 673 deletions
--- a/.github/dependabot.yaml
+++ b/.github/dependabot.yaml
@ -4,6 +4,3 @@ updates:
  directory: "/"
  schedule:
    interval: weekly
-  pull-request-branch-name:
-    separator: "-"
-  open-pull-requests-limit: 3
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@ -0,0 +1,12 @@
+name: publish
+on:
+  push:
+    branches:
+      - release-docs
+jobs:
+  mkdocs:
+    name: mkdocs
+    uses: poseidon/matchbox/.github/workflows/mkdocs-pages.yaml@main
+    # Add content write for GitHub Pages
+    permissions:
+      contents: write
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+site/
--- a/CHANGES.md
+++ b/CHANGES.md
@ -4,6 +4,182 @@ Notable changes between versions.

 ## Latest

+* Update Cilium from v1.13.4 to [v1.14.0](https://github.com/cilium/cilium/releases/tag/v1.14.0)
+* Update flannel from v0.22.0 to [v0.22.1](https://github.com/flannel-io/flannel/releases/tag/v0.22.1)
+
+## v1.27.4
+
+* Kubernetes [v1.27.4](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.27.md#v1274)
+
+## v1.27.3
+
+* Kubernetes [v1.27.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.27.md#v1273)
+* Update etcd from v3.5.7 to [v3.5.9](https://github.com/etcd-io/etcd/releases/tag/v3.5.9)
+* Update Cilium from v1.13.2 to [v1.13.4](https://github.com/cilium/cilium/releases/tag/v1.13.4)
+* Update Calico from v3.25.1 to [v3.26.1](https://github.com/projectcalico/calico/releases/tag/v3.26.1)
+* Update flannel from v0.21.2 to [v0.22.0](https://github.com/flannel-io/flannel/releases/tag/v0.22.0)
+
+### AWS
+
+* Allow upgrading AWS Terraform provider to v5.x ([#1353](https://github.com/poseidon/typhoon/pull/1353))
+
+### Azure
+
+* Enable boot diagnostics for controller and worker VMs ([#1351](https://github.com/poseidon/typhoon/pull/1351))
+
+## v1.27.2
+
+* Kubernetes [v1.27.2](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.27.md#v1272)
+
+### Fedora CoreOS
+
+* Update Butane Config version from v1.4.0 to v1.5.0
+  * Require any custom Butane [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) update to v1.5.0
+* Require Fedora CoreOS `37.20230303.3.0` or newer (with ignition v2.15)
+* Require poseidon/ct v0.13+ (**action required**)
+
+## v1.27.1
+
+* Kubernetes [v1.27.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.27.md#v1271)
+* Update etcd from v3.5.7 to [v3.5.8](https://github.com/etcd-io/etcd/releases/tag/v3.5.8)
+* Update Cilium from v1.13.1 to [v1.13.2](https://github.com/cilium/cilium/releases/tag/v1.13.2)
+* Update Calico from v3.25.0 to [v3.25.1](https://github.com/projectcalico/calico/releases/tag/v3.25.1)
+
+## v1.26.3
+
+* Kubernetes [v1.26.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.26.md#v1263)
+* Update Cilium from v1.12.6 to [v1.13.1](https://github.com/cilium/cilium/releases/tag/v1.13.1)
+
+### Bare-Metal
+
+* Add `oem_type` variable for Flatcar Linux ([#1302](https://github.com/poseidon/typhoon/pull/1302))
+
+## v1.26.2
+
+* Kubernetes [v1.26.2](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.26.md#v1262)
+* Update Cilium from v1.12.5 to [v1.12.6](https://github.com/cilium/cilium/releases/tag/v1.12.6)
+* Update flannel from v0.20.2 to [v0.21.2](https://github.com/flannel-io/flannel/releases/tag/v0.21.2)
+
+### Bare-Metal
+
+* Add a `worker` module to allow customizing individual worker nodes ([#1295](https://github.com/poseidon/typhoon/pull/1295))
+
+### Known Issues
+
+* Fedora CoreOS [issue](https://github.com/coreos/fedora-coreos-tracker/issues/1423) fix is progressing through channels
+
+## v1.26.1
+
+* Kubernetes [v1.26.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.26.md#v1261)
+* Update etcd from v3.5.6 to [v3.5.7](https://github.com/etcd-io/etcd/releases/tag/v3.5.7)
+* Update Cilium from v1.12.4 to [v1.12.5](https://github.com/cilium/cilium/releases/tag/v1.12.5)
+* Update Calico from v3.24.5 to [v3.25.0](https://github.com/projectcalico/calico/releases/tag/v3.25.0)
+* Update CoreDNS from v1.9.3 to [v1.9.4](https://github.com/poseidon/terraform-render-bootstrap/pull/341)
+
+## v1.26.0
+
+* Kubernetes [v1.26.0](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.26.md#v1260)
+* Update etcd from v3.5.5 to [v3.5.6](https://github.com/etcd-io/etcd/releases/tag/v3.5.6)
+* Update Cilium from v1.12.3 to [v1.12.4](https://github.com/cilium/cilium/releases/tag/v1.12.4)
+* Update flannel from v0.15.1 to [v0.20.2](https://github.com/flannel-io/flannel/releases/tag/v0.20.2)
+* Reminder: Modules are no longer published to the [Terraform Module Registry](https://registry.terraform.io/search/modules?q=poseidon) ([#1282](https://github.com/poseidon/typhoon/pull/1282))
+  * See [#1282](https://github.com/poseidon/typhoon/pull/1282) and [v1.25.4](https://github.com/poseidon/typhoon/releases/tag/v1.25.4) for details
+
+### AWS
+
+* Migrate AWS launch configurations to launch templates ([#1275](https://github.com/poseidon/typhoon/pull/1275))
+  * Starting Dec 31, 2022 AWS won't add new instance types/families to launch configurations
+
+### Addons
+
+* Update ingress-nginx from v1.3.1 to [v1.5.1](https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.5.1)
+* Update Prometheus from v2.40.1 to [v2.40.5](https://github.com/prometheus/prometheus/releases/tag/v2.40.5)
+* Update node-exporter from v1.3.1 to [v1.5.0](https://github.com/prometheus/node_exporter/releases/tag/v1.5.0)
+* Update kube-state-metrics from v2.6.0 to [v2.7.0](https://github.com/kubernetes/kube-state-metrics/releases/tag/v2.7.0)
+* Update Grafana from v9.2.4 to [v9.3.1](https://github.com/grafana/grafana/releases/tag/v9.3.1)
+
+## v1.25.4
+
+* Kubernetes [v1.25.4](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md#v1254)
+* Update Calico from v3.24.1 to [v3.24.5](https://github.com/projectcalico/calico/releases/tag/v3.24.5)
+* Allow Kubelet kubeconfig to drain nodes, if desired ([#330](https://github.com/poseidon/terraform-render-bootstrap/pull/330))
+* Re-enable Kubelet Graceful Node Shutdown ([#1261](https://github.com/poseidon/typhoon/pull/1261))
+  * Introduce companion project [poseidon/scuttle](https://github.com/poseidon/scuttle)
+* Link to new Mastodon account for release announcements
+  * [@typhoon@fosstodon.org](https://fosstodon.org/@typhoon)
+  * [@poseidon@fosstodon.org](https://fosstodon.org/@poseidon)
+* Deprecate publishing to the [Terraform Module Registry](https://registry.terraform.io/search/modules?q=poseidon)
+  * Typhoon docs have always shown using Git-based module sources, not the Terraform Module Registry
+  * Module usage should be `source = "git::https://github.com/poseidon/typhoon/...` not `source = poseidon/kubernetes/...`
+  * Terraform's Module Registry requires subtree mirroring typhoon to special terraform-platform-kubernetes repos, only supports release versions (no commit SHAs or forks), only ever contained Flatcar Linux modules (not Fedora CoreOS) for historical reasons
+  * Note, this does not affect Terraform Providers like `poseidon/matchbox` or `poseidon/ct`, the registry works well for providers
+
+### Fedora CoreOS
+
+* Remove unused `Wants=network.target` from `etcd-member.service` ([#1254](https://github.com/poseidon/typhoon/pull/1254))
+
+### Cloud
+
+* Remove defunct `delete-node.service` from worker node configurations ([#1256](https://github.com/poseidon/typhoon/pull/1256))
+
+### Addons
+
+* Update Prometheus from v2.39.1 to [v2.40.1](https://github.com/prometheus/prometheus/releases/tag/v2.40.1)
+* Update Grafana from v9.1.7 to [v9.2.4](https://github.com/grafana/grafana/releases/tag/v9.2.4)
+
+## v1.25.3
+
+* Kubernetes [v1.25.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md#v1253)
+* Switch Kubernetes registry from `k8s.gcr.io` to `registry.k8s.io` for addons ([#1246](https://github.com/poseidon/typhoon/pull/1246))
+* Update Cilium from v1.12.2 to [v1.12.3](https://github.com/cilium/cilium/releases/tag/v1.12.3) ([#1253](https://github.com/poseidon/typhoon/pull/1253))
+
+### Azure
+
+* Change default Azure `worker_type` from [`Standard_DS1_v2`](https://learn.microsoft.com/en-us/azure/virtual-machines/dv2-dsv2-series#dsv2-series) to [`Standard_D2as_v5`](https://learn.microsoft.com/en-us/azure/virtual-machines/dasv5-dadsv5-series#dasv5-series) ([#1248](https://github.com/poseidon/typhoon/pull/1248))
+  * Get 2 VCPU, 7 GiB, 12500Mbps (vs 1 VCPU, 3.5GiB, 750 Mbps)
+  * Small increase in pay-as-you-go price ($53.29 -> $62.78)
+  * Small increase in spot price ($5.64/mo -> $7.37/mo)
+  * Change from Intel to AMD EPYC (`D2as_v5` cheaper than `D2s_v5`)
+
+### Flatcar Linux
+
+* Add Flatcar Linux ARM64 support on Azure ([docs](https://typhoon.psdn.io/advanced/arm64/), [#1251](https://github.com/poseidon/typhoon/pull/1251))
+* Switch from Azure Hypervisor gen1 to gen2 (**action required**) ([#1248](https://github.com/poseidon/typhoon/pull/1248))
+  * Run `az vm image terms accept --publish kinvolk --offer flatcar-container-linux-free --plan stable-gen2`
+
+### Docs
+
+* Remove old docs note about not supporting ARM64 with Calico
+  * Typhoon supports ARM64 with `cilium`, `calico`, and `flannel`
+
+### Addons
+
+* Update Prometheus from v2.38.0 to [v2.39.1](https://github.com/prometheus/prometheus/releases/tag/v2.39.1)
+* Update Grafana from v9.1.6 to [v9.1.7](https://github.com/grafana/grafana/releases/tag/v9.1.7)
+
+## v1.25.2
+
+Kubernetes v1.25.2 was skipped since there were minimal changes upstream.
+
+## v1.25.1
+
+* Kubernetes [v1.25.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md#v1251)
+* Update etcd from v3.5.4 to [v3.5.5](https://github.com/etcd-io/etcd/releases/tag/v3.5.5)
+* Update Cilium from v1.12.1 to [v1.12.2](https://github.com/cilium/cilium/releases/tag/v1.12.2)
+* Update Calico from v3.23.3 to [v3.24.1](https://github.com/projectcalico/calico/releases/tag/v3.24.1)
+* Revert Kubelet Graceful Node Shutdown on worker nodes ([#1227](https://github.com/poseidon/typhoon/pull/1227))
+  * Fix issue where non-critical pods are left in Error/Completed state on node shutdown
+* Remove feature flag disable workaround for [kubernetes/kubernetes#112081](https://github.com/kubernetes/kubernetes/issues/112081)
+  * Kubernetes [reverted](https://github.com/kubernetes/kubernetes/pull/112078) `LocalStorageCapacityIsolationFSQuotaMonitoring` back to alpha
+* Remove workaround for preventing `search .` propagation in [kubernetes/kubernetes#112135](https://github.com/kubernetes/kubernetes/issues/112135)
+  * Upstream Kubernetes [fix](https://github.com/kubernetes/kubernetes/pull/112157)
+
+### Addons
+
+* Update kube-state-metrics from v2.5.0 to [v2.6.0](https://github.com/kubernetes/kube-state-metrics/releases/tag/v2.6.0)
+* Update ingress-nginx from v1.3.0 to [v1.3.1](https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.3.1)
+* Update Grafana from v9.1.0 to [v9.1.6](https://github.com/grafana/grafana/releases/tag/v9.1.6)
+
 ## v1.25.0

 * Kubernetes [v1.25.0](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md#v1250)
--- a/README.md
+++ b/README.md
@ -1,4 +1,4 @@
-# Typhoon [![Release](https://img.shields.io/github/v/release/poseidon/typhoon)](https://github.com/poseidon/typhoon/releases) [![Stars](https://img.shields.io/github/stars/poseidon/typhoon)](https://github.com/poseidon/typhoon/stargazers) [![Sponsors](https://img.shields.io/github/sponsors/poseidon?logo=github)](https://github.com/sponsors/poseidon) [![Twitter](https://img.shields.io/badge/follow-news-1da1f2?logo=twitter)](https://twitter.com/typhoon8s)
+# Typhoon [![Release](https://img.shields.io/github/v/release/poseidon/typhoon)](https://github.com/poseidon/typhoon/releases) [![Stars](https://img.shields.io/github/stars/poseidon/typhoon)](https://github.com/poseidon/typhoon/stargazers) [![Sponsors](https://img.shields.io/github/sponsors/poseidon?logo=github)](https://github.com/sponsors/poseidon) [![Mastodon](https://img.shields.io/badge/follow-news-6364ff?logo=mastodon)](https://fosstodon.org/@typhoon)

 <img align="right" src="https://storage.googleapis.com/poseidon/typhoon-logo.png">

@ -13,7 +13,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/flatcar-linux/google-cloud/#preemption) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) customization
@ -50,6 +50,7 @@ Typhoon is available for [Flatcar Linux](https://www.flatcar-linux.org/releases/
 | Platform      | Operating System | Terraform Module | Status |
 |---------------|------------------|------------------|--------|
 | AWS           | Flatcar Linux (ARM64) | [aws/flatcar-linux/kubernetes](aws/flatcar-linux/kubernetes) | alpha |
+| Azure         | Flatcar Linux (ARM64) | [azure/flatcar-linux/kubernetes](azure/flatcar-linux/kubernetes) | alpha |

 ## Documentation

@ -64,7 +65,7 @@ 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/fedora-coreos/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.27.4"

  # Google Cloud
  cluster_name  = "yavin"
@ -103,9 +104,9 @@ 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   v1.25.0
-yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.25.0
-yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.25.0
+yavin-controller-0.c.example-com.internal  <none>   Ready   6m   v1.27.4
+yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.27.4
+yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.27.4
 ```

 List the pods.
@ -158,5 +159,12 @@ Poseidon's Github [Sponsors](https://github.com/sponsors/poseidon) support the i
    <img src="https://opensource.nyc3.cdn.digitaloceanspaces.com/attribution/assets/SVG/DO_Logo_horizontal_blue.svg" width="201px">
 </a>
 <br>
+<br>
+
+<a href="https://deploy.equinix.com/">
+  <img src="https://storage.googleapis.com/poseidon/equinix.png" width="201px">
+</a>
+<br>
+<br>

 If you'd like your company here, please contact dghubble at psdn.io.
--- a/addons/grafana/deployment.yaml
+++ b/addons/grafana/deployment.yaml
@ -24,7 +24,7 @@ spec:
          type: RuntimeDefault
      containers:
        - name: grafana
-          image: docker.io/grafana/grafana:9.1.0
+          image: docker.io/grafana/grafana:9.3.1
          env:
            - name: GF_PATHS_CONFIG
              value: "/etc/grafana/custom.ini"
--- a/addons/nginx-ingress/aws/deployment.yaml
+++ b/addons/nginx-ingress/aws/deployment.yaml
@ -23,7 +23,7 @@ spec:
          type: RuntimeDefault
      containers:
        - name: nginx-ingress-controller
-          image: k8s.gcr.io/ingress-nginx/controller:v1.3.0
+          image: registry.k8s.io/ingress-nginx/controller:v1.5.1
          args:
            - /nginx-ingress-controller
            - --controller-class=k8s.io/public
--- a/addons/nginx-ingress/azure/deployment.yaml
+++ b/addons/nginx-ingress/azure/deployment.yaml
@ -23,7 +23,7 @@ spec:
          type: RuntimeDefault
      containers:
        - name: nginx-ingress-controller
-          image: k8s.gcr.io/ingress-nginx/controller:v1.3.0
+          image: registry.k8s.io/ingress-nginx/controller:v1.5.1
          args:
            - /nginx-ingress-controller
            - --controller-class=k8s.io/public
--- a/addons/nginx-ingress/bare-metal/deployment.yaml
+++ b/addons/nginx-ingress/bare-metal/deployment.yaml
@ -23,7 +23,7 @@ spec:
          type: RuntimeDefault
      containers:
        - name: nginx-ingress-controller
-          image: k8s.gcr.io/ingress-nginx/controller:v1.3.0
+          image: registry.k8s.io/ingress-nginx/controller:v1.5.1
          args:
            - /nginx-ingress-controller
            - --controller-class=k8s.io/public
--- a/addons/nginx-ingress/digital-ocean/daemonset.yaml
+++ b/addons/nginx-ingress/digital-ocean/daemonset.yaml
@ -23,7 +23,7 @@ spec:
          type: RuntimeDefault
      containers:
        - name: nginx-ingress-controller
-          image: k8s.gcr.io/ingress-nginx/controller:v1.3.0
+          image: registry.k8s.io/ingress-nginx/controller:v1.5.1
          args:
            - /nginx-ingress-controller
            - --controller-class=k8s.io/public
--- a/addons/nginx-ingress/google-cloud/deployment.yaml
+++ b/addons/nginx-ingress/google-cloud/deployment.yaml
@ -23,7 +23,7 @@ spec:
          type: RuntimeDefault
      containers:
        - name: nginx-ingress-controller
-          image: k8s.gcr.io/ingress-nginx/controller:v1.3.0
+          image: registry.k8s.io/ingress-nginx/controller:v1.5.1
          args:
            - /nginx-ingress-controller
            - --controller-class=k8s.io/public
--- a/addons/prometheus/deployment.yaml
+++ b/addons/prometheus/deployment.yaml
@ -21,7 +21,7 @@ spec:
      serviceAccountName: prometheus
      containers:
        - name: prometheus
-          image: quay.io/prometheus/prometheus:v2.38.0
+          image: quay.io/prometheus/prometheus:v2.40.5
          args:
            - --web.listen-address=0.0.0.0:9090
            - --config.file=/etc/prometheus/prometheus.yaml
--- a/addons/prometheus/exporters/kube-state-metrics/deployment.yaml
+++ b/addons/prometheus/exporters/kube-state-metrics/deployment.yaml
@ -25,7 +25,7 @@ spec:
      serviceAccountName: kube-state-metrics
      containers:
      - name: kube-state-metrics
-        image: k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.5.0
+        image: registry.k8s.io/kube-state-metrics/kube-state-metrics:v2.7.0
        ports:
          - name: metrics
            containerPort: 8080
--- a/addons/prometheus/exporters/node-exporter/daemonset.yaml
+++ b/addons/prometheus/exporters/node-exporter/daemonset.yaml
@ -30,7 +30,7 @@ spec:
      hostPID: true
      containers:
      - name: node-exporter
-        image: quay.io/prometheus/node-exporter:v1.3.1
+        image: quay.io/prometheus/node-exporter:v1.5.0
        args:
          - --path.procfs=/host/proc
          - --path.sysfs=/host/sys
--- a/aws/fedora-coreos/kubernetes/README.md
+++ b/aws/fedora-coreos/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/fedora-coreos/aws/#spot) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) customization
--- a/aws/fedora-coreos/kubernetes/bootstrap.tf
+++ b/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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name          = var.cluster_name
  api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
--- a/aws/fedora-coreos/kubernetes/butane/controller.yaml
+++ b/aws/fedora-coreos/kubernetes/butane/controller.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: etcd-member.service
@ -9,10 +9,10 @@ systemd:
        [Unit]
        Description=etcd (System Container)
        Documentation=https://github.com/etcd-io/etcd
-        Wants=network-online.target network.target
+        Wants=network-online.target
        After=network-online.target
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        Type=exec
        ExecStartPre=/bin/mkdir -p /var/lib/etcd
        ExecStartPre=-/usr/bin/podman rm etcd
@ -57,7 +57,7 @@ systemd:
        After=afterburn.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/afterburn
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -116,7 +116,7 @@ systemd:
            --volume /opt/bootstrap/assets:/assets:ro,Z \
            --volume /opt/bootstrap/apply:/apply:ro,Z \
            --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.25.0
+            quay.io/poseidon/kubelet:v1.27.4
        ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
        ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
@ -151,8 +151,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/aws/fedora-coreos/kubernetes/controllers.tf
+++ b/aws/fedora-coreos/kubernetes/controllers.tf
@ -31,6 +31,7 @@ resource "aws_instance" "controllers" {
    volume_size = var.disk_size
    iops        = var.disk_iops
    encrypted   = true
+    tags        = {}
  }

  # network
--- a/aws/fedora-coreos/kubernetes/versions.tf
+++ b/aws/fedora-coreos/kubernetes/versions.tf
@ -3,11 +3,11 @@
 terraform {
  required_version = ">= 0.13.0, < 2.0.0"
  required_providers {
-    aws  = ">= 2.23, <= 5.0"
+    aws  = ">= 2.23, <= 6.0"
    null = ">= 2.1"
    ct = {
      source  = "poseidon/ct"
-      version = "~> 0.9"
+      version = "~> 0.13"
    }
  }
 }
--- a/aws/fedora-coreos/kubernetes/workers/butane/worker.yaml
+++ b/aws/fedora-coreos/kubernetes/workers/butane/worker.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: containerd.service
@ -29,7 +29,7 @@ systemd:
        After=afterburn.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/afterburn
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -77,19 +77,6 @@ systemd:
        RestartSec=10
        [Install]
        WantedBy=multi-user.target
-    - name: delete-node.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Delete Kubernetes node on shutdown
-        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
-        Type=oneshot
-        RemainAfterExit=true
-        ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /var/lib/kubelet:/var/lib/kubelet:ro,z --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
-        [Install]
-        WantedBy=multi-user.target
 storage:
  directories:
    - path: /etc/kubernetes
@ -119,8 +106,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/aws/fedora-coreos/kubernetes/workers/versions.tf
+++ b/aws/fedora-coreos/kubernetes/workers/versions.tf
@ -3,10 +3,10 @@
 terraform {
  required_version = ">= 0.13.0, < 2.0.0"
  required_providers {
-    aws = ">= 2.23, <= 5.0"
+    aws = ">= 2.23, <= 6.0"
    ct = {
      source  = "poseidon/ct"
-      version = "~> 0.9"
+      version = "~> 0.13"
    }
  }
 }
--- a/aws/fedora-coreos/kubernetes/workers/workers.tf
+++ b/aws/fedora-coreos/kubernetes/workers/workers.tf
@ -13,7 +13,10 @@ resource "aws_autoscaling_group" "workers" {
  vpc_zone_identifier = var.subnet_ids

  # template
-  launch_configuration = aws_launch_configuration.worker.name
+  launch_template {
+    id      = aws_launch_template.worker.id
+    version = aws_launch_template.worker.latest_version
+  }

  # target groups to which instances should be added
  target_group_arns = flatten([
@ -49,25 +52,42 @@ resource "aws_autoscaling_group" "workers" {
 }

 # Worker template
-resource "aws_launch_configuration" "worker" {
-  name_prefix       = "${var.name}-worker"
-  image_id          = local.ami_id
-  instance_type     = var.instance_type
-  spot_price        = var.spot_price > 0 ? var.spot_price : null
-  enable_monitoring = false
+resource "aws_launch_template" "worker" {
+  name_prefix   = "${var.name}-worker"
+  image_id      = local.ami_id
+  instance_type = var.instance_type
+  monitoring {
+    enabled = false
+  }

-  user_data = data.ct_config.worker.rendered
+  user_data = sensitive(base64encode(data.ct_config.worker.rendered))

  # storage
-  root_block_device {
-    volume_type = var.disk_type
-    volume_size = var.disk_size
-    iops        = var.disk_iops
-    encrypted   = true
+  ebs_optimized = true
+  block_device_mappings {
+    device_name = "/dev/xvda"
+    ebs {
+      volume_type           = var.disk_type
+      volume_size           = var.disk_size
+      iops                  = var.disk_iops
+      encrypted             = true
+      delete_on_termination = true
+    }
  }

  # network
-  security_groups = var.security_groups
+  vpc_security_group_ids = var.security_groups
+
+  # spot
+  dynamic "instance_market_options" {
+    for_each = var.spot_price > 0 ? [1] : []
+    content {
+      market_type = "spot"
+      spot_options {
+        max_price = var.spot_price
+      }
+    }
+  }

  lifecycle {
    // Override the default destroy and replace update behavior
--- a/aws/flatcar-linux/kubernetes/README.md
+++ b/aws/flatcar-linux/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/flatcar-linux/aws/#spot) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) customization
--- a/aws/flatcar-linux/kubernetes/bootstrap.tf
+++ b/aws/flatcar-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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name          = var.cluster_name
  api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
--- a/aws/flatcar-linux/kubernetes/butane/controller.yaml
+++ b/aws/flatcar-linux/kubernetes/butane/controller.yaml
@ -11,7 +11,7 @@ systemd:
        Requires=docker.service
        After=docker.service
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        ExecStartPre=/usr/bin/docker run -d \
          --name etcd \
          --network host \
@ -58,7 +58,7 @@ systemd:
        After=coreos-metadata.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/coreos
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -109,7 +109,7 @@ systemd:
        Type=oneshot
        RemainAfterExit=true
        WorkingDirectory=/opt/bootstrap
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStart=/usr/bin/docker run \
            -v /etc/kubernetes/pki:/etc/kubernetes/pki:ro \
            -v /opt/bootstrap/assets:/assets:ro \
@ -150,8 +150,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/aws/flatcar-linux/kubernetes/controllers.tf
+++ b/aws/flatcar-linux/kubernetes/controllers.tf
@ -32,6 +32,7 @@ resource "aws_instance" "controllers" {
    volume_size = var.disk_size
    iops        = var.disk_iops
    encrypted   = true
+    tags        = {}
  }

  # network
--- a/aws/flatcar-linux/kubernetes/versions.tf
+++ b/aws/flatcar-linux/kubernetes/versions.tf
@ -3,7 +3,7 @@
 terraform {
  required_version = ">= 0.13.0, < 2.0.0"
  required_providers {
-    aws  = ">= 2.23, <= 5.0"
+    aws  = ">= 2.23, <= 6.0"
    null = ">= 2.1"
    ct = {
      source  = "poseidon/ct"
--- a/aws/flatcar-linux/kubernetes/workers/butane/worker.yaml
+++ b/aws/flatcar-linux/kubernetes/workers/butane/worker.yaml
@ -30,7 +30,7 @@ systemd:
        After=coreos-metadata.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/coreos
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -78,19 +78,6 @@ systemd:
        RestartSec=5
        [Install]
        WantedBy=multi-user.target
-    - name: delete-node.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Delete Kubernetes node on shutdown
-        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
-        Type=oneshot
-        RemainAfterExit=true
-        ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/docker run -v /var/lib/kubelet:/var/lib/kubelet:ro --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
-        [Install]
-        WantedBy=multi-user.target
 storage:
  files:
    - path: /etc/kubernetes/kubeconfig
@ -118,8 +105,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/aws/flatcar-linux/kubernetes/workers/versions.tf
+++ b/aws/flatcar-linux/kubernetes/workers/versions.tf
@ -3,7 +3,7 @@
 terraform {
  required_version = ">= 0.13.0, < 2.0.0"
  required_providers {
-    aws = ">= 2.23, <= 5.0"
+    aws = ">= 2.23, <= 6.0"
    ct = {
      source  = "poseidon/ct"
      version = "~> 0.11"
--- a/aws/flatcar-linux/kubernetes/workers/workers.tf
+++ b/aws/flatcar-linux/kubernetes/workers/workers.tf
@ -13,7 +13,10 @@ resource "aws_autoscaling_group" "workers" {
  vpc_zone_identifier = var.subnet_ids

  # template
-  launch_configuration = aws_launch_configuration.worker.name
+  launch_template {
+    id      = aws_launch_template.worker.id
+    version = aws_launch_template.worker.latest_version
+  }

  # target groups to which instances should be added
  target_group_arns = flatten([
@ -49,25 +52,42 @@ resource "aws_autoscaling_group" "workers" {
 }

 # Worker template
-resource "aws_launch_configuration" "worker" {
-  name_prefix       = "${var.name}-worker"
-  image_id          = local.ami_id
-  instance_type     = var.instance_type
-  spot_price        = var.spot_price > 0 ? var.spot_price : null
-  enable_monitoring = false
+resource "aws_launch_template" "worker" {
+  name_prefix   = "${var.name}-worker"
+  image_id      = local.ami_id
+  instance_type = var.instance_type
+  monitoring {
+    enabled = false
+  }

-  user_data = data.ct_config.worker.rendered
+  user_data = sensitive(base64encode(data.ct_config.worker.rendered))

  # storage
-  root_block_device {
-    volume_type = var.disk_type
-    volume_size = var.disk_size
-    iops        = var.disk_iops
-    encrypted   = true
+  ebs_optimized = true
+  block_device_mappings {
+    device_name = "/dev/xvda"
+    ebs {
+      volume_type           = var.disk_type
+      volume_size           = var.disk_size
+      iops                  = var.disk_iops
+      encrypted             = true
+      delete_on_termination = true
+    }
  }

  # network
-  security_groups = var.security_groups
+  vpc_security_group_ids = var.security_groups
+
+  # spot
+  dynamic "instance_market_options" {
+    for_each = var.spot_price > 0 ? [1] : []
+    content {
+      market_type = "spot"
+      spot_options {
+        max_price = var.spot_price
+      }
+    }
+  }

  lifecycle {
    // Override the default destroy and replace update behavior
--- a/azure/fedora-coreos/kubernetes/README.md
+++ b/azure/fedora-coreos/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/#hosts) customization
--- a/azure/fedora-coreos/kubernetes/bootstrap.tf
+++ b/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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name = var.cluster_name
  api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
--- a/azure/fedora-coreos/kubernetes/butane/controller.yaml
+++ b/azure/fedora-coreos/kubernetes/butane/controller.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: etcd-member.service
@ -9,10 +9,10 @@ systemd:
        [Unit]
        Description=etcd (System Container)
        Documentation=https://github.com/etcd-io/etcd
-        Wants=network-online.target network.target
+        Wants=network-online.target
        After=network-online.target
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        Type=exec
        ExecStartPre=/bin/mkdir -p /var/lib/etcd
        ExecStartPre=-/usr/bin/podman rm etcd
@ -54,7 +54,7 @@ systemd:
        Description=Kubelet (System Container)
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -111,7 +111,7 @@ systemd:
            --volume /opt/bootstrap/assets:/assets:ro,Z \
            --volume /opt/bootstrap/apply:/apply:ro,Z \
            --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.25.0
+            quay.io/poseidon/kubelet:v1.27.4
        ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
        ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
@ -146,8 +146,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/azure/fedora-coreos/kubernetes/variables.tf
+++ b/azure/fedora-coreos/kubernetes/variables.tf
@ -43,7 +43,7 @@ variable "controller_type" {
 variable "worker_type" {
  type        = string
  description = "Machine type for workers (see `az vm list-skus --location centralus`)"
-  default     = "Standard_DS1_v2"
+  default     = "Standard_D2as_v5"
 }

 variable "os_image" {
--- a/azure/fedora-coreos/kubernetes/versions.tf
+++ b/azure/fedora-coreos/kubernetes/versions.tf
@ -7,7 +7,7 @@ terraform {
    null    = ">= 2.1"
    ct = {
      source  = "poseidon/ct"
-      version = "~> 0.9"
+      version = "~> 0.13"
    }
  }
 }
--- a/azure/fedora-coreos/kubernetes/workers/butane/worker.yaml
+++ b/azure/fedora-coreos/kubernetes/workers/butane/worker.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: containerd.service
@ -26,7 +26,7 @@ systemd:
        Description=Kubelet (System Container)
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -72,19 +72,6 @@ systemd:
        RestartSec=10
        [Install]
        WantedBy=multi-user.target
-    - name: delete-node.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Delete Kubernetes node on shutdown
-        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
-        Type=oneshot
-        RemainAfterExit=true
-        ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /var/lib/kubelet:/var/lib/kubelet:ro,z --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
-        [Install]
-        WantedBy=multi-user.target
 storage:
  directories:
    - path: /etc/kubernetes
@ -114,8 +101,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/azure/fedora-coreos/kubernetes/workers/variables.tf
+++ b/azure/fedora-coreos/kubernetes/workers/variables.tf
@ -41,7 +41,7 @@ variable "worker_count" {
 variable "vm_type" {
  type        = string
  description = "Machine type for instances (see `az vm list-skus --location centralus`)"
-  default     = "Standard_DS1_v2"
+  default     = "Standard_D2as_v5"
 }

 variable "os_image" {
--- a/azure/fedora-coreos/kubernetes/workers/versions.tf
+++ b/azure/fedora-coreos/kubernetes/workers/versions.tf
@ -6,7 +6,7 @@ terraform {
    azurerm = ">= 2.8, < 4.0"
    ct = {
      source  = "poseidon/ct"
-      version = "~> 0.9"
+      version = "~> 0.13"
    }
  }
 }
--- a/azure/flatcar-linux/kubernetes/README.md
+++ b/azure/flatcar-linux/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/flatcar-linux/azure/#low-priority) workers, and [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) customization
--- a/azure/flatcar-linux/kubernetes/bootstrap.tf
+++ b/azure/flatcar-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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name = var.cluster_name
  api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
--- a/azure/flatcar-linux/kubernetes/butane/controller.yaml
+++ b/azure/flatcar-linux/kubernetes/butane/controller.yaml
@ -11,7 +11,7 @@ systemd:
        Requires=docker.service
        After=docker.service
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        ExecStartPre=/usr/bin/docker run -d \
          --name etcd \
          --network host \
@ -56,7 +56,7 @@ systemd:
        After=docker.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -105,7 +105,7 @@ systemd:
        Type=oneshot
        RemainAfterExit=true
        WorkingDirectory=/opt/bootstrap
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStart=/usr/bin/docker run \
            -v /etc/kubernetes/pki:/etc/kubernetes/pki:ro \
            -v /opt/bootstrap/assets:/assets:ro \
@ -146,8 +146,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/azure/flatcar-linux/kubernetes/controllers.tf
+++ b/azure/flatcar-linux/kubernetes/controllers.tf
@ -17,7 +17,9 @@ resource "azurerm_dns_a_record" "etcds" {
 locals {
  # Container Linux derivative
  # flatcar-stable -> Flatcar Linux Stable
-  channel = split("-", var.os_image)[1]
+  channel      = split("-", var.os_image)[1]
+  offer_suffix = var.arch == "arm64" ? "corevm" : "free"
+  urn          = var.arch == "arm64" ? local.channel : "${local.channel}-gen2"
 }

 # Controller availability set to spread controllers
@ -42,6 +44,9 @@ resource "azurerm_linux_virtual_machine" "controllers" {

  size        = var.controller_type
  custom_data = base64encode(data.ct_config.controllers.*.rendered[count.index])
+  boot_diagnostics {
+    # defaults to a managed storage account
+  }

  # storage
  os_disk {
@ -53,21 +58,24 @@ resource "azurerm_linux_virtual_machine" "controllers" {

  # Flatcar Container Linux
  source_image_reference {
-    publisher = "Kinvolk"
-    offer     = "flatcar-container-linux-free"
-    sku       = local.channel
+    publisher = "kinvolk"
+    offer     = "flatcar-container-linux-${local.offer_suffix}"
+    sku       = local.urn
    version   = "latest"
  }

-  plan {
-    name      = local.channel
-    publisher = "kinvolk"
-    product   = "flatcar-container-linux-free"
+  dynamic "plan" {
+    for_each = var.arch == "arm64" ? [] : [1]
+    content {
+      publisher = "kinvolk"
+      product   = "flatcar-container-linux-${local.offer_suffix}"
+      name      = local.urn
+    }
  }

  # network
  network_interface_ids = [
-    azurerm_network_interface.controllers.*.id[count.index]
+    azurerm_network_interface.controllers[count.index].id
  ]

  # Azure requires setting admin_ssh_key, though Ignition custom_data handles it too
--- a/azure/flatcar-linux/kubernetes/variables.tf
+++ b/azure/flatcar-linux/kubernetes/variables.tf
@ -43,7 +43,7 @@ variable "controller_type" {
 variable "worker_type" {
  type        = string
  description = "Machine type for workers (see `az vm list-skus --location centralus`)"
-  default     = "Standard_DS1_v2"
+  default     = "Standard_D2as_v5"
 }

 variable "os_image" {
@ -133,12 +133,15 @@ variable "worker_node_labels" {
  default     = []
 }

-# unofficial, undocumented, unsupported
-
-variable "cluster_domain_suffix" {
+variable "arch" {
  type        = string
-  description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "
-  default     = "cluster.local"
+  description = "Container architecture (amd64 or arm64)"
+  default     = "amd64"
+
+  validation {
+    condition     = var.arch == "amd64" || var.arch == "arm64"
+    error_message = "The arch must be amd64 or arm64."
+  }
 }

 variable "daemonset_tolerations" {
@ -146,3 +149,11 @@ variable "daemonset_tolerations" {
  description = "List of additional taint keys kube-system DaemonSets should tolerate (e.g. ['custom-role', 'gpu-role'])"
  default     = []
 }
+
+# unofficial, undocumented, unsupported
+
+variable "cluster_domain_suffix" {
+  type        = string
+  description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "
+  default     = "cluster.local"
+}
--- a/azure/flatcar-linux/kubernetes/workers.tf
+++ b/azure/flatcar-linux/kubernetes/workers.tf
@ -21,4 +21,5 @@ module "workers" {
  cluster_domain_suffix = var.cluster_domain_suffix
  snippets              = var.worker_snippets
  node_labels           = var.worker_node_labels
+  arch                  = var.arch
 }
--- a/azure/flatcar-linux/kubernetes/workers/butane/worker.yaml
+++ b/azure/flatcar-linux/kubernetes/workers/butane/worker.yaml
@ -28,7 +28,7 @@ systemd:
        After=docker.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -74,19 +74,6 @@ systemd:
        RestartSec=5
        [Install]
        WantedBy=multi-user.target
-    - name: delete-node.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Delete Kubernetes node on shutdown
-        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
-        Type=oneshot
-        RemainAfterExit=true
-        ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/docker run -v /var/lib/kubelet:/var/lib/kubelet:ro --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
-        [Install]
-        WantedBy=multi-user.target
 storage:
  files:
    - path: /etc/kubernetes/kubeconfig
@ -114,8 +101,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/azure/flatcar-linux/kubernetes/workers/variables.tf
+++ b/azure/flatcar-linux/kubernetes/workers/variables.tf
@ -41,7 +41,7 @@ variable "worker_count" {
 variable "vm_type" {
  type        = string
  description = "Machine type for instances (see `az vm list-skus --location centralus`)"
-  default     = "Standard_DS1_v2"
+  default     = "Standard_D2as_v5"
 }

 variable "os_image" {
@ -100,6 +100,17 @@ variable "node_taints" {
  default     = []
 }

+variable "arch" {
+  type        = string
+  description = "Container architecture (amd64 or arm64)"
+  default     = "amd64"
+
+  validation {
+    condition     = var.arch == "amd64" || var.arch == "arm64"
+    error_message = "The arch must be amd64 or arm64."
+  }
+}
+
 # unofficial, undocumented, unsupported

 variable "cluster_domain_suffix" {
--- a/azure/flatcar-linux/kubernetes/workers/workers.tf
+++ b/azure/flatcar-linux/kubernetes/workers/workers.tf
@ -1,6 +1,8 @@
 locals {
  # flatcar-stable -> Flatcar Linux Stable
-  channel = split("-", var.os_image)[1]
+  channel      = split("-", var.os_image)[1]
+  offer_suffix = var.arch == "arm64" ? "corevm" : "free"
+  urn          = var.arch == "arm64" ? local.channel : "${local.channel}-gen2"
 }

 # Workers scale set
@ -15,6 +17,9 @@ resource "azurerm_linux_virtual_machine_scale_set" "workers" {
  computer_name_prefix   = "${var.name}-worker"
  single_placement_group = false
  custom_data            = base64encode(data.ct_config.worker.rendered)
+  boot_diagnostics {
+    # defaults to a managed storage account
+  }

  # storage
  os_disk {
@ -24,16 +29,19 @@ resource "azurerm_linux_virtual_machine_scale_set" "workers" {

  # Flatcar Container Linux
  source_image_reference {
-    publisher = "Kinvolk"
-    offer     = "flatcar-container-linux-free"
-    sku       = local.channel
+    publisher = "kinvolk"
+    offer     = "flatcar-container-linux-${local.offer_suffix}"
+    sku       = local.urn
    version   = "latest"
  }

-  plan {
-    name      = local.channel
-    publisher = "kinvolk"
-    product   = "flatcar-container-linux-free"
+  dynamic "plan" {
+    for_each = var.arch == "arm64" ? [] : [1]
+    content {
+      publisher = "kinvolk"
+      product   = "flatcar-container-linux-${local.offer_suffix}"
+      name      = local.urn
+    }
  }

  # Azure requires setting admin_ssh_key, though Ignition custom_data handles it too
@ -64,6 +72,9 @@ resource "azurerm_linux_virtual_machine_scale_set" "workers" {
  # eviction policy may only be set when priority is Spot
  priority        = var.priority
  eviction_policy = var.priority == "Spot" ? "Delete" : null
+  termination_notification {
+    enabled = true
+  }
 }

 # Scale up or down to maintain desired number, tolerating deallocations.
--- a/bare-metal/fedora-coreos/kubernetes/README.md
+++ b/bare-metal/fedora-coreos/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/#hosts) customization
--- a/bare-metal/fedora-coreos/kubernetes/bootstrap.tf
+++ b/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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name                    = var.cluster_name
  api_servers                     = [var.k8s_domain_name]
--- a/bare-metal/fedora-coreos/kubernetes/butane/controller.yaml
+++ b/bare-metal/fedora-coreos/kubernetes/butane/controller.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: etcd-member.service
@ -9,10 +9,10 @@ systemd:
        [Unit]
        Description=etcd (System Container)
        Documentation=https://github.com/etcd-io/etcd
-        Wants=network-online.target network.target
+        Wants=network-online.target
        After=network-online.target
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        Type=exec
        ExecStartPre=/bin/mkdir -p /var/lib/etcd
        ExecStartPre=-/usr/bin/podman rm etcd
@ -53,7 +53,7 @@ systemd:
        Description=Kubelet (System Container)
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -113,7 +113,7 @@ systemd:
        Type=oneshot
        RemainAfterExit=true
        WorkingDirectory=/opt/bootstrap
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=-/usr/bin/podman rm bootstrap
        ExecStart=/usr/bin/podman run --name bootstrap \
            --network host \
@ -124,21 +124,6 @@ systemd:
            $${KUBELET_IMAGE}
        ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
        ExecStartPost=-/usr/bin/podman stop bootstrap
-    - name: fix-resolv-conf-search.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Remove search . from /etc/resolv.conf
-        DefaultDependencies=no
-        Requires=systemd-resolved.service
-        After=systemd-resolved.service
-        BindsTo=systemd-resolved.service
-        [Service]
-        Type=oneshot
-        ExecStartPre=/usr/bin/sleep 5
-        ExecStart=/usr/bin/sed -i -e "s/^search .$//" /run/systemd/resolve/resolv.conf
-        [Install]
-        WantedBy=multi-user.target
 storage:
  directories:
    - path: /var/lib/etcd
@ -171,8 +156,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/bare-metal/fedora-coreos/kubernetes/groups.tf
+++ b/bare-metal/fedora-coreos/kubernetes/groups.tf
@ -1,22 +0,0 @@
-# Match each controller or worker to a profile
-
-resource "matchbox_group" "controller" {
-  count   = length(var.controllers)
-  name    = format("%s-%s", var.cluster_name, var.controllers.*.name[count.index])
-  profile = matchbox_profile.controllers.*.name[count.index]
-
-  selector = {
-    mac = var.controllers.*.mac[count.index]
-  }
-}
-
-resource "matchbox_group" "worker" {
-  count   = length(var.workers)
-  name    = format("%s-%s", var.cluster_name, var.workers.*.name[count.index])
-  profile = matchbox_profile.workers.*.name[count.index]
-
-  selector = {
-    mac = var.workers.*.mac[count.index]
-  }
-}
-
--- a/bare-metal/fedora-coreos/kubernetes/outputs.tf
+++ b/bare-metal/fedora-coreos/kubernetes/outputs.tf
@ -3,6 +3,13 @@ output "kubeconfig-admin" {
  sensitive = true
 }

+# Outputs for workers
+
+output "kubeconfig" {
+  value     = module.bootstrap.kubeconfig-kubelet
+  sensitive = true
+}
+
 # Outputs for debug

 output "assets_dist" {
--- a/bare-metal/fedora-coreos/kubernetes/profiles.tf
+++ b/bare-metal/fedora-coreos/kubernetes/profiles.tf
@ -28,6 +28,16 @@ locals {
  args   = var.cached_install ? local.cached_args : local.remote_args
 }

+# Match a controller to a profile by MAC
+resource "matchbox_group" "controller" {
+  count   = length(var.controllers)
+  name    = format("%s-%s", var.cluster_name, var.controllers.*.name[count.index])
+  profile = matchbox_profile.controllers.*.name[count.index]
+
+  selector = {
+    mac = var.controllers.*.mac[count.index]
+  }
+}

 // Fedora CoreOS controller profile
 resource "matchbox_profile" "controllers" {
@ -55,30 +65,3 @@ data "ct_config" "controllers" {
  strict   = true
  snippets = lookup(var.snippets, var.controllers.*.name[count.index], [])
 }
-
-// Fedora CoreOS worker profile
-resource "matchbox_profile" "workers" {
-  count = length(var.workers)
-  name  = format("%s-worker-%s", var.cluster_name, var.workers.*.name[count.index])
-
-  kernel = local.kernel
-  initrd = local.initrd
-  args   = concat(local.args, var.kernel_args)
-
-  raw_ignition = data.ct_config.workers.*.rendered[count.index]
-}
-
-# Fedora CoreOS workers
-data "ct_config" "workers" {
-  count = length(var.workers)
-  content = templatefile("${path.module}/butane/worker.yaml", {
-    domain_name            = var.workers.*.domain[count.index]
-    cluster_dns_service_ip = module.bootstrap.cluster_dns_service_ip
-    cluster_domain_suffix  = var.cluster_domain_suffix
-    ssh_authorized_key     = var.ssh_authorized_key
-    node_labels            = join(",", lookup(var.worker_node_labels, var.workers.*.name[count.index], []))
-    node_taints            = join(",", lookup(var.worker_node_taints, var.workers.*.name[count.index], []))
-  })
-  strict   = true
-  snippets = lookup(var.snippets, var.workers.*.name[count.index], [])
-}
--- a/bare-metal/fedora-coreos/kubernetes/ssh.tf
+++ b/bare-metal/fedora-coreos/kubernetes/ssh.tf
@ -15,7 +15,6 @@ resource "null_resource" "copy-controller-secrets" {
  # matchbox groups are written, causing a deadlock.
  depends_on = [
    matchbox_group.controller,
-    matchbox_group.worker,
    module.bootstrap,
  ]

@ -45,37 +44,6 @@ resource "null_resource" "copy-controller-secrets" {
  }
 }

-# Secure copy kubeconfig to all workers. Activates kubelet.service
-resource "null_resource" "copy-worker-secrets" {
-  count = length(var.workers)
-
-  # Without depends_on, remote-exec could start and wait for machines before
-  # matchbox groups are written, causing a deadlock.
-  depends_on = [
-    matchbox_group.controller,
-    matchbox_group.worker,
-  ]
-
-  connection {
-    type    = "ssh"
-    host    = var.workers.*.domain[count.index]
-    user    = "core"
-    timeout = "60m"
-  }
-
-  provisioner "file" {
-    content     = module.bootstrap.kubeconfig-kubelet
-    destination = "/home/core/kubeconfig"
-  }
-
-  provisioner "remote-exec" {
-    inline = [
-      "sudo mv /home/core/kubeconfig /etc/kubernetes/kubeconfig",
-      "sudo touch /etc/kubernetes",
-    ]
-  }
-}
-
 # Connect to a controller to perform one-time cluster bootstrap.
 resource "null_resource" "bootstrap" {
  # Without depends_on, this remote-exec may start before the kubeconfig copy.
@ -83,7 +51,6 @@ resource "null_resource" "bootstrap" {
  # while no Kubelets are running.
  depends_on = [
    null_resource.copy-controller-secrets,
-    null_resource.copy-worker-secrets,
  ]

  connection {
--- a/bare-metal/fedora-coreos/kubernetes/variables.tf
+++ b/bare-metal/fedora-coreos/kubernetes/variables.tf
@ -53,6 +53,7 @@ List of worker machine details (unique name, identifying MAC address, FQDN)
  { name = "node3", mac = "52:54:00:c3:61:77", domain = "node3.example.com"}
 ]
 EOD
+  default     = []
 }

 variable "snippets" {
--- a/bare-metal/fedora-coreos/kubernetes/versions.tf
+++ b/bare-metal/fedora-coreos/kubernetes/versions.tf
@ -6,7 +6,7 @@ terraform {
    null = ">= 2.1"
    ct = {
      source  = "poseidon/ct"
-      version = "~> 0.9"
+      version = "~> 0.13"
    }
    matchbox = {
      source  = "poseidon/matchbox"
--- a/bare-metal/fedora-coreos/kubernetes/worker/butane/worker.yaml
+++ b/bare-metal/fedora-coreos/kubernetes/worker/butane/worker.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: containerd.service
@ -25,7 +25,7 @@ systemd:
        Description=Kubelet (System Container)
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -81,21 +81,6 @@ systemd:
        PathExists=/etc/kubernetes/kubeconfig
        [Install]
        WantedBy=multi-user.target
-    - name: fix-resolv-conf-search.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Remove search . from /etc/resolv.conf
-        DefaultDependencies=no
-        Requires=systemd-resolved.service
-        After=systemd-resolved.service
-        BindsTo=systemd-resolved.service
-        [Service]
-        Type=oneshot
-        ExecStartPre=/usr/bin/sleep 5
-        ExecStart=/usr/bin/sed -i -e "s/^search .$//" /run/systemd/resolve/resolv.conf
-        [Install]
-        WantedBy=multi-user.target
 storage:
  directories:
    - path: /etc/kubernetes
@ -125,8 +110,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/bare-metal/fedora-coreos/kubernetes/worker/matchbox.tf
+++ b/bare-metal/fedora-coreos/kubernetes/worker/matchbox.tf
@ -0,0 +1,63 @@
+locals {
+  remote_kernel = "https://builds.coreos.fedoraproject.org/prod/streams/${var.os_stream}/builds/${var.os_version}/x86_64/fedora-coreos-${var.os_version}-live-kernel-x86_64"
+  remote_initrd = [
+    "--name main https://builds.coreos.fedoraproject.org/prod/streams/${var.os_stream}/builds/${var.os_version}/x86_64/fedora-coreos-${var.os_version}-live-initramfs.x86_64.img",
+  ]
+
+  remote_args = [
+    "initrd=main",
+    "coreos.live.rootfs_url=https://builds.coreos.fedoraproject.org/prod/streams/${var.os_stream}/builds/${var.os_version}/x86_64/fedora-coreos-${var.os_version}-live-rootfs.x86_64.img",
+    "coreos.inst.install_dev=${var.install_disk}",
+    "coreos.inst.ignition_url=${var.matchbox_http_endpoint}/ignition?uuid=$${uuid}&mac=$${mac:hexhyp}",
+  ]
+
+  cached_kernel = "/assets/fedora-coreos/fedora-coreos-${var.os_version}-live-kernel-x86_64"
+  cached_initrd = [
+    "/assets/fedora-coreos/fedora-coreos-${var.os_version}-live-initramfs.x86_64.img",
+  ]
+
+  cached_args = [
+    "initrd=main",
+    "coreos.live.rootfs_url=${var.matchbox_http_endpoint}/assets/fedora-coreos/fedora-coreos-${var.os_version}-live-rootfs.x86_64.img",
+    "coreos.inst.install_dev=${var.install_disk}",
+    "coreos.inst.ignition_url=${var.matchbox_http_endpoint}/ignition?uuid=$${uuid}&mac=$${mac:hexhyp}",
+  ]
+
+  kernel = var.cached_install ? local.cached_kernel : local.remote_kernel
+  initrd = var.cached_install ? local.cached_initrd : local.remote_initrd
+  args   = var.cached_install ? local.cached_args : local.remote_args
+}
+
+// Match a worker to a profile by MAC
+resource "matchbox_group" "worker" {
+  name    = format("%s-%s", var.cluster_name, var.name)
+  profile = matchbox_profile.worker.name
+  selector = {
+    mac = var.mac
+  }
+}
+
+// Fedora CoreOS worker profile
+resource "matchbox_profile" "worker" {
+  name   = format("%s-worker-%s", var.cluster_name, var.name)
+  kernel = local.kernel
+  initrd = local.initrd
+  args   = concat(local.args, var.kernel_args)
+
+  raw_ignition = data.ct_config.worker.rendered
+}
+
+# Fedora CoreOS workers
+data "ct_config" "worker" {
+  content = templatefile("${path.module}/butane/worker.yaml", {
+    domain_name            = var.domain
+    ssh_authorized_key     = var.ssh_authorized_key
+    cluster_dns_service_ip = cidrhost(var.service_cidr, 10)
+    cluster_domain_suffix  = var.cluster_domain_suffix
+    node_labels            = join(",", var.node_labels)
+    node_taints            = join(",", var.node_taints)
+  })
+  strict   = true
+  snippets = var.snippets
+}
+
--- a/bare-metal/fedora-coreos/kubernetes/worker/ssh.tf
+++ b/bare-metal/fedora-coreos/kubernetes/worker/ssh.tf
@ -0,0 +1,27 @@
+# Secure copy kubeconfig to worker. Activates kubelet.service
+resource "null_resource" "copy-worker-secrets" {
+  # Without depends_on, remote-exec could start and wait for machines before
+  # matchbox groups are written, causing a deadlock.
+  depends_on = [
+    matchbox_group.worker,
+  ]
+
+  connection {
+    type    = "ssh"
+    host    = var.domain
+    user    = "core"
+    timeout = "60m"
+  }
+
+  provisioner "file" {
+    content     = var.kubeconfig
+    destination = "/home/core/kubeconfig"
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "sudo mv /home/core/kubeconfig /etc/kubernetes/kubeconfig",
+      "sudo touch /etc/kubernetes",
+    ]
+  }
+}
--- a/bare-metal/fedora-coreos/kubernetes/worker/variables.tf
+++ b/bare-metal/fedora-coreos/kubernetes/worker/variables.tf
@ -0,0 +1,111 @@
+variable "cluster_name" {
+  type        = string
+  description = "Must be set to the `cluster_name` of cluster"
+}
+
+# bare-metal
+
+variable "matchbox_http_endpoint" {
+  type        = string
+  description = "Matchbox HTTP read-only endpoint (e.g. http://matchbox.example.com:8080)"
+}
+
+variable "os_stream" {
+  type        = string
+  description = "Fedora CoreOS release stream (e.g. stable, testing, next)"
+  default     = "stable"
+
+  validation {
+    condition     = contains(["stable", "testing", "next"], var.os_stream)
+    error_message = "The os_stream must be stable, testing, or next."
+  }
+}
+
+variable "os_version" {
+  type        = string
+  description = "Fedora CoreOS version to PXE and install (e.g. 31.20200310.3.0)"
+}
+
+# machine
+
+variable "name" {
+  type        = string
+  description = "Unique name for the machine (e.g. node1)"
+}
+
+variable "mac" {
+  type        = string
+  description = "MAC address (e.g. 52:54:00:a1:9c:ae)"
+}
+
+variable "domain" {
+  type        = string
+  description = "Fully qualified domain name (e.g. node1.example.com)"
+}
+
+# configuration
+
+variable "kubeconfig" {
+  type        = string
+  description = "Must be set to `kubeconfig` output by cluster"
+}
+
+variable "ssh_authorized_key" {
+  type        = string
+  description = "SSH public key for user 'core'"
+}
+
+variable "snippets" {
+  type        = list(string)
+  description = "List of Butane snippets"
+  default     = []
+}
+
+variable "node_labels" {
+  type        = list(string)
+  description = "List of initial node labels"
+  default     = []
+}
+
+variable "node_taints" {
+  type        = list(string)
+  description = "List of initial node taints"
+  default     = []
+}
+
+# optional
+
+variable "cached_install" {
+  type        = bool
+  description = "Whether Fedora CoreOS should PXE boot and install from matchbox /assets cache. Note that the admin must have downloaded the os_version into matchbox assets."
+  default     = false
+}
+
+variable "install_disk" {
+  type        = string
+  description = "Disk device to install Fedora CoreOS (e.g. sda)"
+  default     = "sda"
+}
+
+variable "kernel_args" {
+  type        = list(string)
+  description = "Additional kernel arguments to provide at PXE boot."
+  default     = []
+}
+
+# unofficial, undocumented, unsupported
+
+variable "service_cidr" {
+  type        = string
+  description = <<EOD
+CIDR IPv4 range to assign Kubernetes services.
+The 1st IP will be reserved for kube_apiserver, the 10th IP will be reserved for coredns.
+EOD
+  default     = "10.3.0.0/16"
+}
+
+variable "cluster_domain_suffix" {
+  description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "
+  type        = string
+  default     = "cluster.local"
+}
--- a/bare-metal/fedora-coreos/kubernetes/worker/versions.tf
+++ b/bare-metal/fedora-coreos/kubernetes/worker/versions.tf
@ -0,0 +1,17 @@
+# Terraform version and plugin versions
+
+terraform {
+  required_version = ">= 0.13.0, < 2.0.0"
+  required_providers {
+    null = ">= 2.1"
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.13"
+    }
+    matchbox = {
+      source  = "poseidon/matchbox"
+      version = "~> 0.5.0"
+    }
+  }
+}
+
--- a/bare-metal/fedora-coreos/kubernetes/workers.tf
+++ b/bare-metal/fedora-coreos/kubernetes/workers.tf
@ -0,0 +1,30 @@
+module "workers" {
+  count  = length(var.workers)
+  source = "./worker"
+
+  cluster_name = var.cluster_name
+
+  # metal
+  matchbox_http_endpoint = var.matchbox_http_endpoint
+  os_stream              = var.os_stream
+  os_version             = var.os_version
+
+  # machine
+  name   = var.workers[count.index].name
+  mac    = var.workers[count.index].mac
+  domain = var.workers[count.index].domain
+
+  # configuration
+  kubeconfig            = module.bootstrap.kubeconfig-kubelet
+  ssh_authorized_key    = var.ssh_authorized_key
+  service_cidr          = var.service_cidr
+  cluster_domain_suffix = var.cluster_domain_suffix
+  node_labels           = lookup(var.worker_node_labels, var.workers[count.index].name, [])
+  node_taints           = lookup(var.worker_node_taints, var.workers[count.index].name, [])
+  snippets              = lookup(var.snippets, var.workers[count.index].name, [])
+
+  # optional
+  cached_install = var.cached_install
+  install_disk   = var.install_disk
+  kernel_args    = var.kernel_args
+}
--- a/bare-metal/flatcar-linux/kubernetes/README.md
+++ b/bare-metal/flatcar-linux/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/#hosts) customization
--- a/bare-metal/flatcar-linux/kubernetes/bootstrap.tf
+++ b/bare-metal/flatcar-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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name                    = var.cluster_name
  api_servers                     = [var.k8s_domain_name]
--- a/bare-metal/flatcar-linux/kubernetes/butane/controller.yaml
+++ b/bare-metal/flatcar-linux/kubernetes/butane/controller.yaml
@ -11,7 +11,7 @@ systemd:
        Requires=docker.service
        After=docker.service
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        ExecStartPre=/usr/bin/docker run -d \
          --name etcd \
          --network host \
@ -64,7 +64,7 @@ systemd:
        After=docker.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -114,7 +114,7 @@ systemd:
        Type=oneshot
        RemainAfterExit=true
        WorkingDirectory=/opt/bootstrap
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStart=/usr/bin/docker run \
            -v /etc/kubernetes/pki:/etc/kubernetes/pki:ro \
            -v /opt/bootstrap/assets:/assets:ro \
@ -157,8 +157,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/bare-metal/flatcar-linux/kubernetes/butane/install.yaml
+++ b/bare-metal/flatcar-linux/kubernetes/butane/install.yaml
@ -35,6 +35,7 @@ storage:
            -d ${install_disk} \
            -C ${os_channel} \
            -V ${os_version} \
+            ${oem_flag} \
            ${baseurl_flag} \
            -i ignition.json
          udevadm settle
--- a/bare-metal/flatcar-linux/kubernetes/groups.tf
+++ b/bare-metal/flatcar-linux/kubernetes/groups.tf
@ -1,35 +0,0 @@
-resource "matchbox_group" "install" {
-  count = length(var.controllers) + length(var.workers)
-
-  name = format("install-%s", concat(var.controllers.*.name, var.workers.*.name)[count.index])
-
-  # pick Matchbox profile (Flatcar upstream or Matchbox image cache)
-  profile = var.cached_install ? matchbox_profile.cached-flatcar-install.*.name[count.index] : matchbox_profile.flatcar-install.*.name[count.index]
-
-  selector = {
-    mac = concat(var.controllers.*.mac, var.workers.*.mac)[count.index]
-  }
-}
-
-resource "matchbox_group" "controller" {
-  count   = length(var.controllers)
-  name    = format("%s-%s", var.cluster_name, var.controllers[count.index].name)
-  profile = matchbox_profile.controllers.*.name[count.index]
-
-  selector = {
-    mac = var.controllers[count.index].mac
-    os  = "installed"
-  }
-}
-
-resource "matchbox_group" "worker" {
-  count   = length(var.workers)
-  name    = format("%s-%s", var.cluster_name, var.workers[count.index].name)
-  profile = matchbox_profile.workers.*.name[count.index]
-
-  selector = {
-    mac = var.workers[count.index].mac
-    os  = "installed"
-  }
-}
-
--- a/bare-metal/flatcar-linux/kubernetes/profiles.tf
+++ b/bare-metal/flatcar-linux/kubernetes/profiles.tf
@ -1,54 +1,53 @@
 locals {
  # flatcar-stable -> stable channel
  channel = split("-", var.os_channel)[1]
-}

-// Flatcar Linux install profile (from release.flatcar-linux.net)
-resource "matchbox_profile" "flatcar-install" {
-  count = length(var.controllers) + length(var.workers)
-  name  = format("%s-flatcar-install-%s", var.cluster_name, concat(var.controllers.*.name, var.workers.*.name)[count.index])
-
-  kernel = "${var.download_protocol}://${local.channel}.release.flatcar-linux.net/amd64-usr/${var.os_version}/flatcar_production_pxe.vmlinuz"
-
-  initrd = [
+  remote_kernel = "${var.download_protocol}://${local.channel}.release.flatcar-linux.net/amd64-usr/${var.os_version}/flatcar_production_pxe.vmlinuz"
+  remote_initrd = [
    "${var.download_protocol}://${local.channel}.release.flatcar-linux.net/amd64-usr/${var.os_version}/flatcar_production_pxe_image.cpio.gz",
  ]
-
-  args = flatten([
+  args = [
    "initrd=flatcar_production_pxe_image.cpio.gz",
    "flatcar.config.url=${var.matchbox_http_endpoint}/ignition?uuid=$${uuid}&mac=$${mac:hexhyp}",
    "flatcar.first_boot=yes",
-    var.kernel_args,
-  ])
+  ]

-  raw_ignition = data.ct_config.install.*.rendered[count.index]
-}
-
-// Flatcar Linux Install profile (from matchbox /assets cache)
-// Note: Admin must have downloaded os_version into matchbox assets/flatcar.
-resource "matchbox_profile" "cached-flatcar-install" {
-  count = length(var.controllers) + length(var.workers)
-  name  = format("%s-cached-flatcar-linux-install-%s", var.cluster_name, concat(var.controllers.*.name, var.workers.*.name)[count.index])
-
-  kernel = "/assets/flatcar/${var.os_version}/flatcar_production_pxe.vmlinuz"
-
-  initrd = [
+  cached_kernel = "/assets/flatcar/${var.os_version}/flatcar_production_pxe.vmlinuz"
+  cached_initrd = [
    "/assets/flatcar/${var.os_version}/flatcar_production_pxe_image.cpio.gz",
  ]

-  args = flatten([
-    "initrd=flatcar_production_pxe_image.cpio.gz",
-    "flatcar.config.url=${var.matchbox_http_endpoint}/ignition?uuid=$${uuid}&mac=$${mac:hexhyp}",
-    "flatcar.first_boot=yes",
-    var.kernel_args,
-  ])
+  kernel = var.cached_install ? local.cached_kernel : local.remote_kernel
+  initrd = var.cached_install ? local.cached_initrd : local.remote_initrd
+}

-  raw_ignition = data.ct_config.cached-install.*.rendered[count.index]
+# Match controllers to install profiles by MAC
+resource "matchbox_group" "install" {
+  count = length(var.controllers)
+
+  name    = format("install-%s", var.controllers[count.index].name)
+  profile = matchbox_profile.install[count.index].name
+  selector = {
+    mac = concat(var.controllers.*.mac, var.workers.*.mac)[count.index]
+  }
+}
+
+// Flatcar Linux install
+resource "matchbox_profile" "install" {
+  count = length(var.controllers)
+
+  name   = format("%s-install-%s", var.cluster_name, var.controllers.*.name[count.index])
+  kernel = local.kernel
+  initrd = local.initrd
+  args   = concat(local.args, var.kernel_args)
+
+  raw_ignition = data.ct_config.install[count.index].rendered
 }

 # Flatcar Linux install
 data "ct_config" "install" {
-  count = length(var.controllers) + length(var.workers)
+  count = length(var.controllers)
+
  content = templatefile("${path.module}/butane/install.yaml", {
    os_channel         = local.channel
    os_version         = var.os_version
@ -56,26 +55,23 @@ data "ct_config" "install" {
    mac                = concat(var.controllers.*.mac, var.workers.*.mac)[count.index]
    install_disk       = var.install_disk
    ssh_authorized_key = var.ssh_authorized_key
+    oem_flag           = var.oem_type != "" ? "-o ${var.oem_type}" : ""
    # only cached profile adds -b baseurl
-    baseurl_flag = ""
+    baseurl_flag = var.cached_install ? "-b ${var.matchbox_http_endpoint}/assets/flatcar" : ""
  })
  strict = true
+  install_snippets = lookup(var.install_snippets, var.controllers.*.name[count.index], [])
 }

-# Flatcar Linux cached install
-data "ct_config" "cached-install" {
-  count = length(var.controllers) + length(var.workers)
-  content = templatefile("${path.module}/butane/install.yaml", {
-    os_channel         = local.channel
-    os_version         = var.os_version
-    ignition_endpoint  = format("%s/ignition", var.matchbox_http_endpoint)
-    mac                = concat(var.controllers.*.mac, var.workers.*.mac)[count.index]
-    install_disk       = var.install_disk
-    ssh_authorized_key = var.ssh_authorized_key
-    # profile uses -b baseurl to install from matchbox cache
-    baseurl_flag = "-b ${var.matchbox_http_endpoint}/assets/flatcar"
-  })
-  strict = true
+# Match each controller by MAC
+resource "matchbox_group" "controller" {
+  count   = length(var.controllers)
+  name    = format("%s-%s", var.cluster_name, var.controllers[count.index].name)
+  profile = matchbox_profile.controllers[count.index].name
+  selector = {
+    mac = var.controllers[count.index].mac
+    os  = "installed"
+  }
 }

 // Kubernetes Controller profiles
@ -99,25 +95,3 @@ data "ct_config" "controllers" {
  strict   = true
  snippets = lookup(var.snippets, var.controllers.*.name[count.index], [])
 }
-
-// Kubernetes Worker profiles
-resource "matchbox_profile" "workers" {
-  count        = length(var.workers)
-  name         = format("%s-worker-%s", var.cluster_name, var.workers.*.name[count.index])
-  raw_ignition = data.ct_config.workers.*.rendered[count.index]
-}
-
-# Flatcar Linux workers
-data "ct_config" "workers" {
-  count = length(var.workers)
-  content = templatefile("${path.module}/butane/worker.yaml", {
-    domain_name            = var.workers.*.domain[count.index]
-    cluster_dns_service_ip = module.bootstrap.cluster_dns_service_ip
-    cluster_domain_suffix  = var.cluster_domain_suffix
-    ssh_authorized_key     = var.ssh_authorized_key
-    node_labels            = join(",", lookup(var.worker_node_labels, var.workers.*.name[count.index], []))
-    node_taints            = join(",", lookup(var.worker_node_taints, var.workers.*.name[count.index], []))
-  })
-  strict   = true
-  snippets = lookup(var.snippets, var.workers.*.name[count.index], [])
-}
--- a/bare-metal/flatcar-linux/kubernetes/ssh.tf
+++ b/bare-metal/flatcar-linux/kubernetes/ssh.tf
@ -16,7 +16,6 @@ resource "null_resource" "copy-controller-secrets" {
  depends_on = [
    matchbox_group.install,
    matchbox_group.controller,
-    matchbox_group.worker,
    module.bootstrap,
  ]

@ -45,37 +44,6 @@ resource "null_resource" "copy-controller-secrets" {
  }
 }

-# Secure copy kubeconfig to all workers. Activates kubelet.service
-resource "null_resource" "copy-worker-secrets" {
-  count = length(var.workers)
-
-  # Without depends_on, remote-exec could start and wait for machines before
-  # matchbox groups are written, causing a deadlock.
-  depends_on = [
-    matchbox_group.install,
-    matchbox_group.controller,
-    matchbox_group.worker,
-  ]
-
-  connection {
-    type    = "ssh"
-    host    = var.workers.*.domain[count.index]
-    user    = "core"
-    timeout = "60m"
-  }
-
-  provisioner "file" {
-    content     = module.bootstrap.kubeconfig-kubelet
-    destination = "/home/core/kubeconfig"
-  }
-
-  provisioner "remote-exec" {
-    inline = [
-      "sudo mv /home/core/kubeconfig /etc/kubernetes/kubeconfig",
-    ]
-  }
-}
-
 # Connect to a controller to perform one-time cluster bootstrap.
 resource "null_resource" "bootstrap" {
  # Without depends_on, this remote-exec may start before the kubeconfig copy.
@ -83,7 +51,6 @@ resource "null_resource" "bootstrap" {
  # while no Kubelets are running.
  depends_on = [
    null_resource.copy-controller-secrets,
-    null_resource.copy-worker-secrets,
  ]

  connection {
@ -99,4 +66,3 @@ resource "null_resource" "bootstrap" {
    ]
  }
 }
-
--- a/bare-metal/flatcar-linux/kubernetes/variables.tf
+++ b/bare-metal/flatcar-linux/kubernetes/variables.tf
@ -52,6 +52,7 @@ List of worker machine details (unique name, identifying MAC address, FQDN)
  { name = "node3", mac = "52:54:00:c3:61:77", domain = "node3.example.com"}
 ]
 EOD
+  default     = []
 }

 variable "snippets" {
@ -60,6 +61,12 @@ variable "snippets" {
  default     = {}
 }

+variable "install_snippets" {
+  type        = map(list(string))
+  description = "Map from machine names to lists of Container Linux Config snippets to run during install phase"
+  default     = {}
+}
+
 variable "worker_node_labels" {
  type        = map(list(string))
  description = "Map from worker names to lists of initial node labels"
@ -155,6 +162,17 @@ variable "enable_aggregation" {
  default     = true
 }

+variable "oem_type" {
+  type        = string
+  description = <<EOD
+An OEM type to install with flatcar-install. Find available types by looking for Flatcar image files
+ending in `image.bin.bz2`. The OEM identifier is contained in the filename.
+E.g., `flatcar_production_vmware_raw_image.bin.bz2` leads to `vmware_raw`.
+See: https://www.flatcar.org/docs/latest/installing/bare-metal/installing-to-disk/#choose-a-channel
+EOD
+  default     = ""
+}
+
 # unofficial, undocumented, unsupported

 variable "cluster_domain_suffix" {
--- a/bare-metal/flatcar-linux/kubernetes/worker/butane/install.yaml
+++ b/bare-metal/flatcar-linux/kubernetes/worker/butane/install.yaml
@ -0,0 +1,47 @@
+variant: flatcar
+version: 1.0.0
+systemd:
+  units:
+    - name: installer.service
+      enabled: true
+      contents: |
+        [Unit]
+        Requires=network-online.target
+        After=network-online.target
+        [Service]
+        Type=simple
+        ExecStart=/opt/installer
+        [Install]
+        WantedBy=multi-user.target
+    # Avoid using the standard SSH port so terraform apply cannot SSH until
+    # post-install. But admins may SSH to debug disk install problems.
+    # After install, sshd will use port 22 and users/terraform can connect.
+    - name: sshd.socket
+      dropins:
+        - name: 10-sshd-port.conf
+          contents: |
+            [Socket]
+            ListenStream=
+            ListenStream=2222
+storage:
+  files:
+    - path: /opt/installer
+      mode: 0500
+      contents:
+        inline: |
+          #!/bin/bash -ex
+          curl --retry 10 "${ignition_endpoint}?mac=${mac}&os=installed" -o ignition.json
+          flatcar-install \
+            -d ${install_disk} \
+            -C ${os_channel} \
+            -V ${os_version} \
+            ${oem_flag} \
+            ${baseurl_flag} \
+            -i ignition.json
+          udevadm settle
+          systemctl reboot
+passwd:
+  users:
+    - name: core
+      ssh_authorized_keys:
+        - "${ssh_authorized_key}"
--- a/bare-metal/flatcar-linux/kubernetes/worker/butane/worker.yaml
+++ b/bare-metal/flatcar-linux/kubernetes/worker/butane/worker.yaml
@ -36,7 +36,7 @@ systemd:
        After=docker.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
@ -115,8 +115,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/bare-metal/flatcar-linux/kubernetes/worker/matchbox.tf
+++ b/bare-metal/flatcar-linux/kubernetes/worker/matchbox.tf
@ -0,0 +1,89 @@
+locals {
+  # flatcar-stable -> stable channel
+  channel = split("-", var.os_channel)[1]
+
+  remote_kernel = "${var.download_protocol}://${local.channel}.release.flatcar-linux.net/amd64-usr/${var.os_version}/flatcar_production_pxe.vmlinuz"
+  remote_initrd = [
+    "${var.download_protocol}://${local.channel}.release.flatcar-linux.net/amd64-usr/${var.os_version}/flatcar_production_pxe_image.cpio.gz",
+  ]
+  args = flatten([
+    "initrd=flatcar_production_pxe_image.cpio.gz",
+    "flatcar.config.url=${var.matchbox_http_endpoint}/ignition?uuid=$${uuid}&mac=$${mac:hexhyp}",
+    "flatcar.first_boot=yes",
+    var.kernel_args,
+  ])
+
+  cached_kernel = "/assets/flatcar/${var.os_version}/flatcar_production_pxe.vmlinuz"
+  cached_initrd = [
+    "/assets/flatcar/${var.os_version}/flatcar_production_pxe_image.cpio.gz",
+  ]
+
+  kernel = var.cached_install ? local.cached_kernel : local.remote_kernel
+  initrd = var.cached_install ? local.cached_initrd : local.remote_initrd
+}
+
+# Match machine to an install profile by MAC
+resource "matchbox_group" "install" {
+  name    = format("install-%s", var.name)
+  profile = matchbox_profile.install.name
+  selector = {
+    mac = var.mac
+  }
+}
+
+// Flatcar Linux install profile (from release.flatcar-linux.net)
+resource "matchbox_profile" "install" {
+  name   = format("%s-install-%s", var.cluster_name, var.name)
+  kernel = local.kernel
+  initrd = local.initrd
+  args   = local.args
+
+  raw_ignition = data.ct_config.install.rendered
+}
+
+# Flatcar Linux install
+data "ct_config" "install" {
+  content = templatefile("${path.module}/butane/install.yaml", {
+    os_channel         = local.channel
+    os_version         = var.os_version
+    ignition_endpoint  = format("%s/ignition", var.matchbox_http_endpoint)
+    mac                = var.mac
+    install_disk       = var.install_disk
+    ssh_authorized_key = var.ssh_authorized_key
+    oem_flag           = var.oem_type != "" ? "-o ${var.oem_type}" : ""
+    # only cached profile adds -b baseurl
+    baseurl_flag = var.cached_install ? "-b ${var.matchbox_http_endpoint}/assets/flatcar" : ""
+  })
+  strict = true
+  snippets = var.install_snippets
+}
+
+# Match a worker to a profile by MAC
+resource "matchbox_group" "worker" {
+  name    = format("%s-%s", var.cluster_name, var.name)
+  profile = matchbox_profile.worker.name
+  selector = {
+    mac = var.mac
+    os  = "installed"
+  }
+}
+
+// Flatcar Linux Worker profile
+resource "matchbox_profile" "worker" {
+  name         = format("%s-worker-%s", var.cluster_name, var.name)
+  raw_ignition = data.ct_config.worker.rendered
+}
+
+# Flatcar Linux workers
+data "ct_config" "worker" {
+  content = templatefile("${path.module}/butane/worker.yaml", {
+    domain_name            = var.domain
+    ssh_authorized_key     = var.ssh_authorized_key
+    cluster_dns_service_ip = cidrhost(var.service_cidr, 10)
+    cluster_domain_suffix  = var.cluster_domain_suffix
+    node_labels            = join(",", var.node_labels)
+    node_taints            = join(",", var.node_taints)
+  })
+  strict   = true
+  snippets = var.snippets
+}
--- a/bare-metal/flatcar-linux/kubernetes/worker/ssh.tf
+++ b/bare-metal/flatcar-linux/kubernetes/worker/ssh.tf
@ -0,0 +1,27 @@
+# Secure copy kubeconfig to worker. Activates kubelet.service
+resource "null_resource" "copy-worker-secrets" {
+  # Without depends_on, remote-exec could start and wait for machines before
+  # matchbox groups are written, causing a deadlock.
+  depends_on = [
+    matchbox_group.install,
+    matchbox_group.worker,
+  ]
+
+  connection {
+    type    = "ssh"
+    host    = var.domain
+    user    = "core"
+    timeout = "60m"
+  }
+
+  provisioner "file" {
+    content     = var.kubeconfig
+    destination = "/home/core/kubeconfig"
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "sudo mv /home/core/kubeconfig /etc/kubernetes/kubeconfig",
+    ]
+  }
+}
--- a/bare-metal/flatcar-linux/kubernetes/worker/variables.tf
+++ b/bare-metal/flatcar-linux/kubernetes/worker/variables.tf
@ -0,0 +1,132 @@
+variable "cluster_name" {
+  type        = string
+  description = "Must be set to the `cluster_name` of cluster"
+}
+
+# bare-metal
+
+variable "matchbox_http_endpoint" {
+  type        = string
+  description = "Matchbox HTTP read-only endpoint (e.g. http://matchbox.example.com:8080)"
+}
+
+variable "os_channel" {
+  type        = string
+  description = "Channel for a Flatcar Linux (flatcar-stable, flatcar-beta, flatcar-alpha)"
+
+  validation {
+    condition     = contains(["flatcar-stable", "flatcar-beta", "flatcar-alpha"], var.os_channel)
+    error_message = "The os_channel must be flatcar-stable, flatcar-beta, or flatcar-alpha."
+  }
+}
+
+variable "os_version" {
+  type        = string
+  description = "Version of Flatcar Linux to PXE and install (e.g. 2079.5.1)"
+}
+
+# machine
+
+variable "name" {
+  type        = string
+  description = "Unique name for the machine (e.g. node1)"
+}
+
+variable "mac" {
+  type        = string
+  description = "MAC address (e.g. 52:54:00:a1:9c:ae)"
+}
+
+variable "domain" {
+  type        = string
+  description = "Fully qualified domain name (e.g. node1.example.com)"
+}
+
+# configuration
+
+variable "kubeconfig" {
+  type        = string
+  description = "Must be set to `kubeconfig` output by cluster"
+}
+
+variable "ssh_authorized_key" {
+  type        = string
+  description = "SSH public key for user 'core'"
+}
+
+variable "snippets" {
+  type        = list(string)
+  description = "List of Butane snippets"
+  default     = []
+}
+
+variable "install_snippets" {
+  type        = list(string)
+  description = "List of Butane snippets to run with the install command"
+  default     = []
+}
+
+variable "node_labels" {
+  type        = list(string)
+  description = "List of initial node labels"
+  default     = []
+}
+
+variable "node_taints" {
+  type        = list(string)
+  description = "List of initial node taints"
+  default     = []
+}
+
+# optional
+
+variable "download_protocol" {
+  type        = string
+  description = "Protocol iPXE should use to download the kernel and initrd. Defaults to https, which requires iPXE compiled with crypto support. Unused if cached_install is true."
+  default     = "https"
+}
+
+variable "cached_install" {
+  type        = bool
+  description = "Whether Flatcar Linux should PXE boot and install from matchbox /assets cache. Note that the admin must have downloaded the os_version into matchbox assets."
+  default     = false
+}
+
+variable "install_disk" {
+  type        = string
+  default     = "/dev/sda"
+  description = "Disk device to which the install profiles should install Flatcar Linux (e.g. /dev/sda)"
+}
+
+variable "kernel_args" {
+  type        = list(string)
+  description = "Additional kernel arguments to provide at PXE boot."
+  default     = []
+}
+
+variable "oem_type" {
+  type        = string
+  default     = ""
+  description = "An OEM type to install with flatcar-install."
+}
+
+# unofficial, undocumented, unsupported
+
+variable "service_cidr" {
+  type        = string
+  description = <<EOD
+CIDR IPv4 range to assign Kubernetes services.
+The 1st IP will be reserved for kube_apiserver, the 10th IP will be reserved for coredns.
+EOD
+  default     = "10.3.0.0/16"
+}
+
+
+
+variable "cluster_domain_suffix" {
+  type        = string
+  description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "
+  default     = "cluster.local"
+}
+
+
--- a/bare-metal/flatcar-linux/kubernetes/worker/versions.tf
+++ b/bare-metal/flatcar-linux/kubernetes/worker/versions.tf
@ -0,0 +1,16 @@
+# Terraform version and plugin versions
+
+terraform {
+  required_version = ">= 0.13.0, < 2.0.0"
+  required_providers {
+    null = ">= 2.1"
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.9"
+    }
+    matchbox = {
+      source  = "poseidon/matchbox"
+      version = "~> 0.5.0"
+    }
+  }
+}
--- a/bare-metal/flatcar-linux/kubernetes/workers.tf
+++ b/bare-metal/flatcar-linux/kubernetes/workers.tf
@ -0,0 +1,34 @@
+module "workers" {
+  count  = length(var.workers)
+  source = "./worker"
+
+  cluster_name = var.cluster_name
+
+  # metal
+  matchbox_http_endpoint = var.matchbox_http_endpoint
+  os_channel             = var.os_channel
+  os_version             = var.os_version
+
+  # machine
+  name   = var.workers[count.index].name
+  mac    = var.workers[count.index].mac
+  domain = var.workers[count.index].domain
+
+  # configuration
+  kubeconfig            = module.bootstrap.kubeconfig-kubelet
+  ssh_authorized_key    = var.ssh_authorized_key
+  service_cidr          = var.service_cidr
+  cluster_domain_suffix = var.cluster_domain_suffix
+  node_labels           = lookup(var.worker_node_labels, var.workers[count.index].name, [])
+  node_taints           = lookup(var.worker_node_taints, var.workers[count.index].name, [])
+  snippets              = lookup(var.snippets, var.workers[count.index].name, [])
+  install_snippets      = lookup(var.install_snippets, var.workers[count.index].name, [])
+
+  # optional
+  download_protocol = var.download_protocol
+  cached_install    = var.cached_install
+  install_disk      = var.install_disk
+  kernel_args       = var.kernel_args
+  oem_type          = var.oem_type
+}
+
--- a/digital-ocean/fedora-coreos/kubernetes/README.md
+++ b/digital-ocean/fedora-coreos/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/), SELinux enforcing
 * Advanced features like [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) customization
--- a/digital-ocean/fedora-coreos/kubernetes/bootstrap.tf
+++ b/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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name = var.cluster_name
  api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
--- a/digital-ocean/fedora-coreos/kubernetes/butane/controller.yaml
+++ b/digital-ocean/fedora-coreos/kubernetes/butane/controller.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: etcd-member.service
@ -9,10 +9,10 @@ systemd:
        [Unit]
        Description=etcd (System Container)
        Documentation=https://github.com/etcd-io/etcd
-        Wants=network-online.target network.target
+        Wants=network-online.target
        After=network-online.target
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        Type=exec
        ExecStartPre=/bin/mkdir -p /var/lib/etcd
        ExecStartPre=-/usr/bin/podman rm etcd
@ -55,7 +55,7 @@ systemd:
        After=afterburn.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/afterburn
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -123,7 +123,7 @@ systemd:
            --volume /opt/bootstrap/assets:/assets:ro,Z \
            --volume /opt/bootstrap/apply:/apply:ro,Z \
            --entrypoint=/apply \
-            quay.io/poseidon/kubelet:v1.25.0
+            quay.io/poseidon/kubelet:v1.27.4
        ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
        ExecStartPost=-/usr/bin/podman stop bootstrap
 storage:
@ -153,8 +153,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/digital-ocean/fedora-coreos/kubernetes/butane/worker.yaml
+++ b/digital-ocean/fedora-coreos/kubernetes/butane/worker.yaml
@ -1,6 +1,6 @@
 ---
 variant: fcos
-version: 1.4.0
+version: 1.5.0
 systemd:
  units:
    - name: containerd.service
@ -28,7 +28,7 @@ systemd:
        After=afterburn.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/afterburn
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -82,19 +82,6 @@ systemd:
        PathExists=/etc/kubernetes/kubeconfig
        [Install]
        WantedBy=multi-user.target
-    - name: delete-node.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Delete Kubernetes node on shutdown
-        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
-        Type=oneshot
-        RemainAfterExit=true
-        ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/podman run --volume /var/lib/kubelet:/var/lib/kubelet:ro,z --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
-        [Install]
-        WantedBy=multi-user.target
 storage:
  directories:
    - path: /etc/kubernetes
@ -119,8 +106,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/digital-ocean/flatcar-linux/kubernetes/README.md
+++ b/digital-ocean/flatcar-linux/kubernetes/README.md
@ -11,7 +11,7 @@ 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 v1.25.0 (upstream)
+* Kubernetes v1.27.4 (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/#hosts) customization
--- a/digital-ocean/flatcar-linux/kubernetes/bootstrap.tf
+++ b/digital-ocean/flatcar-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=3fa08c542c75d5e62ebab2bd28e0a7392f3ffb46"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=35848a50c6be694bc2084bc2696ffb78792c0be3"

  cluster_name = var.cluster_name
  api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
--- a/digital-ocean/flatcar-linux/kubernetes/butane/controller.yaml
+++ b/digital-ocean/flatcar-linux/kubernetes/butane/controller.yaml
@ -11,7 +11,7 @@ systemd:
        Requires=docker.service
        After=docker.service
        [Service]
-        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.4
+        Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.9
        ExecStartPre=/usr/bin/docker run -d \
          --name etcd \
          --network host \
@ -66,7 +66,7 @@ systemd:
        After=coreos-metadata.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/coreos
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -117,7 +117,7 @@ systemd:
        Type=oneshot
        RemainAfterExit=true
        WorkingDirectory=/opt/bootstrap
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        ExecStart=/usr/bin/docker run \
            -v /etc/kubernetes/pki:/etc/kubernetes/pki:ro \
            -v /opt/bootstrap/assets:/assets:ro \
@ -155,8 +155,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/digital-ocean/flatcar-linux/kubernetes/butane/worker.yaml
+++ b/digital-ocean/flatcar-linux/kubernetes/butane/worker.yaml
@ -38,7 +38,7 @@ systemd:
        After=coreos-metadata.service
        Wants=rpc-statd.service
        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
+        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.27.4
        EnvironmentFile=/run/metadata/coreos
        ExecStartPre=/bin/mkdir -p /etc/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -80,19 +80,6 @@ systemd:
        RestartSec=5
        [Install]
        WantedBy=multi-user.target
-    - name: delete-node.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Delete Kubernetes node on shutdown
-        [Service]
-        Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.25.0
-        Type=oneshot
-        RemainAfterExit=true
-        ExecStart=/bin/true
-        ExecStop=/bin/bash -c '/usr/bin/docker run -v /var/lib/kubelet:/var/lib/kubelet:ro --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
-        [Install]
-        WantedBy=multi-user.target
 storage:
  directories:
    - path: /etc/kubernetes
@ -118,8 +105,6 @@ storage:
            - ${cluster_dns_service_ip}
          clusterDomain: ${cluster_domain_suffix}
          healthzPort: 0
-          featureGates:
-            LocalStorageCapacityIsolationFSQuotaMonitoring: false
          rotateCertificates: true
          shutdownGracePeriod: 45s
          shutdownGracePeriodCriticalPods: 30s
--- a/docs/addons/fleetlock.md
+++ b/docs/addons/fleetlock.md
@ -6,7 +6,7 @@ Declare a Zincati `fleet_lock` strategy when provisioning Fedora CoreOS nodes vi

 ```yaml
 variant: fcos
-version: 1.1.0
+version: 1.5.0
 storage:
  files:
    - path: /etc/zincati/config.d/55-update-strategy.toml
--- a/docs/advanced/arm64.md
+++ b/docs/advanced/arm64.md
@ -1,19 +1,21 @@
 # ARM64

-Typhoon has experimental support for ARM64 on AWS, with Fedora CoreOS or Flatcar Linux. Clusters can be created with ARM64 controller and worker nodes. Or worker pools of ARM64 nodes can be attached to an AMD64 cluster to create a hybrid/mixed architecture cluster.
+Typhoon supports ARM64 Kubernetes clusters with ARM64 controller and worker nodes (full-cluster) or adding worker pools of ARM64 nodes to clusters with an x86/amd64 control plane for a hybdrid (mixed-arch) cluster.

-!!! note
-    Currently, CNI networking must be set to `flannel` or `cilium`.
+Typhoon ARM64 clusters (full-cluster or mixed-arch) are available on:
+
+* AWS with Fedora CoreOS or Flatcar Linux
+* Azure with Flatcar Linux

 ## Cluster

-Create a cluster with ARM64 controller and worker nodes. Container workloads must be `arm64` compatible and use `arm64` container images.
+Create a cluster on AWS with ARM64 controller and worker nodes. Container workloads must be `arm64` compatible and use `arm64` (or multi-arch) container images.

 === "Fedora CoreOS Cluster (arm64)"

    ```tf
    module "gravitas" {
-      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.27.4"

      # AWS
      cluster_name = "gravitas"
@ -38,7 +40,7 @@ Create a cluster with ARM64 controller and worker nodes. Container workloads mus

    ```tf
    module "gravitas" {
-      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.27.4"

      # AWS
      cluster_name = "gravitas"
@ -64,9 +66,9 @@ Verify the cluster has only arm64 (`aarch64`) nodes. For Flatcar Linux, describe
 ```
 $ kubectl get nodes -o wide
 NAME             STATUS   ROLES    AGE   VERSION   INTERNAL-IP   EXTERNAL-IP   OS-IMAGE                        KERNEL-VERSION            CONTAINER-RUNTIME
-ip-10-0-21-119   Ready    <none>   77s   v1.25.0   10.0.21.119   <none>        Fedora CoreOS 35.20211215.3.0   5.15.7-200.fc35.aarch64   containerd://1.5.8
-ip-10-0-32-166   Ready    <none>   80s   v1.25.0   10.0.32.166   <none>        Fedora CoreOS 35.20211215.3.0   5.15.7-200.fc35.aarch64   containerd://1.5.8
-ip-10-0-5-79     Ready    <none>   77s   v1.25.0   10.0.5.79     <none>        Fedora CoreOS 35.20211215.3.0   5.15.7-200.fc35.aarch64   containerd://1.5.8
+ip-10-0-21-119   Ready    <none>   77s   v1.27.4   10.0.21.119   <none>        Fedora CoreOS 35.20211215.3.0   5.15.7-200.fc35.aarch64   containerd://1.5.8
+ip-10-0-32-166   Ready    <none>   80s   v1.27.4   10.0.32.166   <none>        Fedora CoreOS 35.20211215.3.0   5.15.7-200.fc35.aarch64   containerd://1.5.8
+ip-10-0-5-79     Ready    <none>   77s   v1.27.4   10.0.5.79     <none>        Fedora CoreOS 35.20211215.3.0   5.15.7-200.fc35.aarch64   containerd://1.5.8
 ```

 ## Hybrid
@ -77,7 +79,7 @@ Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [wo

    ```tf
    module "gravitas" {
-      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.27.4"

      # AWS
      cluster_name = "gravitas"
@ -100,7 +102,7 @@ Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [wo

    ```tf
    module "gravitas" {
-      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.27.4"

      # AWS
      cluster_name = "gravitas"
@ -123,7 +125,7 @@ Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [wo

    ```tf
    module "gravitas-arm64" {
-      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes/workers?ref=v1.27.4"

      # AWS
      vpc_id          = module.gravitas.vpc_id
@ -147,7 +149,7 @@ Create a hybrid/mixed arch cluster by defining an AWS cluster. Then define a [wo

    ```tf
    module "gravitas-arm64" {
-      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes/workers?ref=v1.27.4"

      # AWS
      vpc_id          = module.gravitas.vpc_id
@ -172,9 +174,34 @@ Verify amd64 (x86_64) and arm64 (aarch64) nodes are present.
 ```
 $ kubectl get nodes -o wide
 NAME                       STATUS   ROLES    AGE    VERSION   INTERNAL-IP   EXTERNAL-IP   OS-IMAGE                                             KERNEL-VERSION            CONTAINER-RUNTIME
-ip-10-0-1-73               Ready    <none>   111m   v1.25.0   10.0.1.73     <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
-ip-10-0-22-79...           Ready    <none>   111m   v1.25.0   10.0.22.79    <none>        Flatcar Container Linux by Kinvolk 3033.2.0 (Oklo)   5.10.84-flatcar           containerd://1.5.8
-ip-10-0-24-130             Ready    <none>   111m   v1.25.0   10.0.24.130   <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
-ip-10-0-39-19              Ready    <none>   111m   v1.25.0   10.0.39.19    <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
+ip-10-0-1-73               Ready    <none>   111m   v1.27.4   10.0.1.73     <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
+ip-10-0-22-79...           Ready    <none>   111m   v1.27.4   10.0.22.79    <none>        Flatcar Container Linux by Kinvolk 3033.2.0 (Oklo)   5.10.84-flatcar           containerd://1.5.8
+ip-10-0-24-130             Ready    <none>   111m   v1.27.4   10.0.24.130   <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
+ip-10-0-39-19              Ready    <none>   111m   v1.27.4   10.0.39.19    <none>        Fedora CoreOS 35.20211215.3.0                        5.15.7-200.fc35.x86_64    containerd://1.5.8
 ```

+## Azure
+
+Create a cluster on Azure with ARM64 controller and worker nodes. Container workloads must be `arm64` compatible and use `arm64` (or multi-arch) container images.
+
+```tf
+module "ramius" {
+  source = "git::https://github.com/poseidon/typhoon//azure/flatcar-linux/kubernetes?ref=v1.27.4"
+
+  # Azure
+  cluster_name   = "ramius"
+  region         = "centralus"
+  dns_zone       = "azure.example.com"
+  dns_zone_group = "example-group"
+
+  # configuration
+  ssh_authorized_key = "ssh-rsa AAAAB3Nz..."
+
+  # optional
+  arch            = "arm64"
+  controller_type = "Standard_D2pls_v5"
+  worker_type     = "Standard_D2pls_v5"
+  worker_count    = 2
+  host_cidr       = "10.0.0.0/20"
+}
+```
--- a/docs/advanced/customization.md
+++ b/docs/advanced/customization.md
@ -38,7 +38,7 @@ For example, ensure an `/opt/hello` file is created with permissions 0644 before
    ```yaml
    # custom-files.yaml
    variant: fcos
-    version: 1.4.0
+    version: 1.5.0
    storage:
      files:
        - path: /opt/hello
@ -70,7 +70,7 @@ Or ensure a systemd unit `hello.service` is created.
    ```yaml
    # custom-units.yaml
    variant: fcos
-    version: 1.4.0
+    version: 1.5.0
    systemd:
      units:
        - name: hello.service
@ -164,7 +164,7 @@ To set an alternative etcd image or Kubelet image, use a snippet to set a system
    ```yaml
    # kubelet-image-override.yaml
    variant: fcos           <- remove for Flatcar Linux
-    version: 1.4.0          <- remove for Flatcar Linux
+    version: 1.5.0          <- remove for Flatcar Linux
    systemd:
      units:
        - name: kubelet.service
@ -180,7 +180,7 @@ To set an alternative etcd image or Kubelet image, use a snippet to set a system
    ```yaml
    # etcd-image-override.yaml
    variant: fcos           <- remove for Flatcar Linux
-    version: 1.4.0          <- remove for Flatcar Linux
+    version: 1.5.0          <- remove for Flatcar Linux
    systemd:
      units:
        - name: etcd-member.service
--- a/docs/advanced/nodes.md
+++ b/docs/advanced/nodes.md
@ -36,7 +36,7 @@ Add custom initial worker node labels to default workers or worker pool nodes to

    ```tf
    module "yavin" {
-      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.27.4"

      # Google Cloud
      cluster_name  = "yavin"
@ -57,7 +57,7 @@ Add custom initial worker node labels to default workers or worker pool nodes to

    ```tf
    module "yavin-pool" {
-      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes/workers?ref=v1.27.4"

      # Google Cloud
      cluster_name = "yavin"
@ -89,7 +89,7 @@ Add custom initial taints on worker pool nodes to indicate a node is unique and

    ```tf
    module "yavin" {
-      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.27.4"

      # Google Cloud
      cluster_name  = "yavin"
@ -110,7 +110,7 @@ Add custom initial taints on worker pool nodes to indicate a node is unique and

    ```tf
    module "yavin-pool" {
-      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes/workers?ref=v1.27.4"

      # Google Cloud
      cluster_name = "yavin"
--- a/docs/advanced/worker-pools.md
+++ b/docs/advanced/worker-pools.md
@ -19,7 +19,7 @@ Create a cluster following the AWS [tutorial](../flatcar-linux/aws.md#cluster).

    ```tf
    module "tempest-worker-pool" {
-      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes/workers?ref=v1.27.4"

      # AWS
      vpc_id          = module.tempest.vpc_id
@ -42,7 +42,7 @@ Create a cluster following the AWS [tutorial](../flatcar-linux/aws.md#cluster).

    ```tf
    module "tempest-worker-pool" {
-      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes/workers?ref=v1.27.4"

      # AWS
      vpc_id          = module.tempest.vpc_id
@ -111,7 +111,7 @@ Create a cluster following the Azure [tutorial](../flatcar-linux/azure.md#cluste

    ```tf
    module "ramius-worker-pool" {
-      source = "git::https://github.com/poseidon/typhoon//azure/fedora-coreos/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//azure/fedora-coreos/kubernetes/workers?ref=v1.27.4"

      # Azure
      region                  = module.ramius.region
@ -137,7 +137,7 @@ Create a cluster following the Azure [tutorial](../flatcar-linux/azure.md#cluste

    ```tf
    module "ramius-worker-pool" {
-      source = "git::https://github.com/poseidon/typhoon//azure/flatcar-linux/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//azure/flatcar-linux/kubernetes/workers?ref=v1.27.4"

      # Azure
      region                  = module.ramius.region
@ -189,7 +189,7 @@ The Azure internal `workers` module supports a number of [variables](https://git
 | Name | Description | Default | Example |
 |:-----|:------------|:--------|:--------|
 | worker_count | Number of instances | 1 | 3 |
-| vm_type | Machine type for instances | "Standard_DS1_v2" | See below |
+| vm_type | Machine type for instances | "Standard_D2as_v5" | See below |
 | os_image | Channel for a Container Linux derivative | "flatcar-stable" | flatcar-stable, flatcar-beta, flatcar-alpha |
 | priority | Set priority to Spot to use reduced cost surplus capacity, with the tradeoff that instances can be deallocated at any time | "Regular" | "Spot" |
 | snippets | Container Linux Config snippets | [] | [examples](/advanced/customization/) |
@ -207,7 +207,7 @@ Create a cluster following the Google Cloud [tutorial](../flatcar-linux/google-c

    ```tf
    module "yavin-worker-pool" {
-      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes/workers?ref=v1.27.4"

      # Google Cloud
      region       = "europe-west2"
@ -231,7 +231,7 @@ Create a cluster following the Google Cloud [tutorial](../flatcar-linux/google-c

    ```tf
    module "yavin-worker-pool" {
-      source = "git::https://github.com/poseidon/typhoon//google-cloud/flatcar-linux/kubernetes/workers?ref=v1.25.0"
+      source = "git::https://github.com/poseidon/typhoon//google-cloud/flatcar-linux/kubernetes/workers?ref=v1.27.4"

      # Google Cloud
      region       = "europe-west2"
@ -262,11 +262,11 @@ Verify a managed instance group of workers joins the cluster within a few minute
 ```
 $ kubectl get nodes
 NAME                                             STATUS   AGE    VERSION
-yavin-controller-0.c.example-com.internal        Ready    6m     v1.25.0
-yavin-worker-jrbf.c.example-com.internal         Ready    5m     v1.25.0
-yavin-worker-mzdm.c.example-com.internal         Ready    5m     v1.25.0
-yavin-16x-worker-jrbf.c.example-com.internal     Ready    3m     v1.25.0
-yavin-16x-worker-mzdm.c.example-com.internal     Ready    3m     v1.25.0
+yavin-controller-0.c.example-com.internal        Ready    6m     v1.27.4
+yavin-worker-jrbf.c.example-com.internal         Ready    5m     v1.27.4
+yavin-worker-mzdm.c.example-com.internal         Ready    5m     v1.27.4
+yavin-16x-worker-jrbf.c.example-com.internal     Ready    3m     v1.27.4
+yavin-16x-worker-mzdm.c.example-com.internal     Ready    3m     v1.27.4
 ```

 ### Variables
--- a/docs/fedora-coreos/aws.md
+++ b/docs/fedora-coreos/aws.md
@ -1,6 +1,6 @@
 # AWS

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on AWS with Fedora CoreOS.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on AWS with Fedora CoreOS.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create a VPC, gateway, subnets, security groups, controller instances, worker auto-scaling group, network load balancer, and TLS assets.

@ -51,11 +51,11 @@ terraform {
  required_providers {
    ct = {
      source  = "poseidon/ct"
-      version = "0.11.0"
+      version = "0.13.0"
    }
    aws = {
      source = "hashicorp/aws"
-      version = "4.28.0"
+      version = "4.61.0"
    }
  }
 }
@ -72,7 +72,7 @@ Define a Kubernetes cluster using the module `aws/fedora-coreos/kubernetes`.

 ```tf
 module "tempest" {
-  source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.27.4"

  # AWS
  cluster_name = "tempest"
@ -145,9 +145,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/tempest-config
 $ kubectl get nodes
 NAME           STATUS  ROLES    AGE  VERSION
-ip-10-0-3-155  Ready   <none>   10m  v1.25.0
-ip-10-0-26-65  Ready   <none>   10m  v1.25.0
-ip-10-0-41-21  Ready   <none>   10m  v1.25.0
+ip-10-0-3-155  Ready   <none>   10m  v1.27.4
+ip-10-0-26-65  Ready   <none>   10m  v1.27.4
+ip-10-0-41-21  Ready   <none>   10m  v1.27.4
 ```

 List the pods.
--- a/docs/fedora-coreos/azure.md
+++ b/docs/fedora-coreos/azure.md
@ -1,6 +1,6 @@
 # Azure

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on Azure with Fedora CoreOS.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on Azure with Fedora CoreOS.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create a resource group, virtual network, subnets, security groups, controller availability set, worker scale set, load balancer, and TLS assets.

@ -48,11 +48,11 @@ terraform {
  required_providers {
    ct = {
      source  = "poseidon/ct"
-      version = "0.11.0"
+      version = "0.13.0"
    }
    azurerm = {
      source = "hashicorp/azurerm"
-      version = "3.20.0"
+      version = "3.50.0"
    }
  }
 }
@ -86,7 +86,7 @@ Define a Kubernetes cluster using the module `azure/fedora-coreos/kubernetes`.

 ```tf
 module "ramius" {
-  source = "git::https://github.com/poseidon/typhoon//azure/fedora-coreos/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//azure/fedora-coreos/kubernetes?ref=v1.27.4"

  # Azure
  cluster_name   = "ramius"
@ -161,9 +161,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/ramius-config
 $ kubectl get nodes
 NAME                  STATUS  ROLES   AGE  VERSION
-ramius-controller-0   Ready   <none>  24m  v1.25.0
-ramius-worker-000001  Ready   <none>  25m  v1.25.0
-ramius-worker-000002  Ready   <none>  24m  v1.25.0
+ramius-controller-0   Ready   <none>  24m  v1.27.4
+ramius-worker-000001  Ready   <none>  25m  v1.27.4
+ramius-worker-000002  Ready   <none>  24m  v1.27.4
 ```

 List the pods.
@ -240,7 +240,7 @@ Reference the DNS zone with `azurerm_dns_zone.clusters.name` and its resource gr
 | controller_count | Number of controllers (i.e. masters) | 1 | 1 |
 | worker_count | Number of workers | 1 | 3 |
 | controller_type | Machine type for controllers | "Standard_B2s" | See below |
-| worker_type | Machine type for workers | "Standard_DS1_v2" | See below |
+| worker_type | Machine type for workers | "Standard_D2as_v5" | See below |
 | disk_size | Size of the disk in GB | 30 | 100 |
 | worker_priority | Set priority to Spot to use reduced cost surplus capacity, with the tradeoff that instances can be deallocated at any time | Regular | Spot |
 | controller_snippets | Controller Butane snippets | [] | [example](/advanced/customization/#usage) |
--- a/docs/fedora-coreos/bare-metal.md
+++ b/docs/fedora-coreos/bare-metal.md
@ -1,6 +1,6 @@
 # Bare-Metal

-In this tutorial, we'll network boot and provision a Kubernetes v1.25.0 cluster on bare-metal with Fedora CoreOS.
+In this tutorial, we'll network boot and provision a Kubernetes v1.27.4 cluster on bare-metal with Fedora CoreOS.

 First, we'll deploy a [Matchbox](https://github.com/poseidon/matchbox) service and setup a network boot environment. Then, we'll declare a Kubernetes cluster using the Typhoon Terraform module and power on machines. On PXE boot, machines will install Fedora CoreOS to disk, reboot into the disk install, and provision themselves as Kubernetes controllers or workers via Ignition.

@ -138,7 +138,7 @@ terraform {
  required_providers {
    ct = {
      source  = "poseidon/ct"
-      version = "0.11.0"
+      version = "0.13.0"
    }
    matchbox = {
      source = "poseidon/matchbox"
@ -154,7 +154,7 @@ Define a Kubernetes cluster using the module `bare-metal/fedora-coreos/kubernete

 ```tf
 module "mercury" {
-  source = "git::https://github.com/poseidon/typhoon//bare-metal/fedora-coreos/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//bare-metal/fedora-coreos/kubernetes?ref=v1.27.4"

  # bare-metal
  cluster_name            = "mercury"
@ -187,6 +187,36 @@ module "mercury" {
 }
 ```

+Workers with similar features can be defined inline using the `workers` field as shown above. It's also possible to define discrete workers that attach to the cluster. Discrete workers are more advanced, but more verbose.
+
+```tf
+module "mercury-node1" {
+  source = "git::https://github.com/poseidon/typhoon//bare-metal/fedora-coreos/kubernetes/worker?ref=v1.27.4"
+
+  # bare-metal
+  cluster_name = "mercury"
+  matchbox_http_endpoint  = "http://matchbox.example.com"
+  os_stream               = "stable"
+  os_version              = "32.20201104.3.0"
+
+  # configuration
+  name               = "node2"
+  mac                = "52:54:00:b2:2f:86"
+  domain             = "node2.example.com"
+  kubeconfig         = module.mercury.kubeconfig
+  ssh_authorized_key = "ssh-ed25519 AAAAB3Nz..."
+
+  # optional
+  snippets       = []
+  node_labels    = []
+  node_tains     = []
+  install_disk   = "/dev/vda"
+  cached_install = false
+}
+
+...
+```
+
 Reference the [variables docs](#variables) or the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-metal/fedora-coreos/kubernetes/variables.tf) source.

 ## ssh-agent
@ -283,9 +313,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/mercury-config
 $ kubectl get nodes
 NAME                STATUS  ROLES   AGE  VERSION
-node1.example.com   Ready   <none>  10m  v1.25.0
-node2.example.com   Ready   <none>  10m  v1.25.0
-node3.example.com   Ready   <none>  10m  v1.25.0
+node1.example.com   Ready   <none>  10m  v1.27.4
+node2.example.com   Ready   <none>  10m  v1.27.4
+node3.example.com   Ready   <none>  10m  v1.27.4
 ```

 List the pods.
@ -325,12 +355,12 @@ Check the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-me
 | k8s_domain_name | FQDN resolving to the controller(s) nodes. Workers and kubectl will communicate with this endpoint | "myk8s.example.com" |
 | ssh_authorized_key | SSH public key for user 'core' | "ssh-ed25519 AAAAB3Nz..." |
 | controllers | List of controller machine detail objects (unique name, identifying MAC address, FQDN) | `[{name="node1", mac="52:54:00:a1:9c:ae", domain="node1.example.com"}]` |
-| workers | List of worker machine detail objects (unique name, identifying MAC address, FQDN) | `[{name="node2", mac="52:54:00:b2:2f:86", domain="node2.example.com"}, {name="node3", mac="52:54:00:c3:61:77", domain="node3.example.com"}]` |

 ### Optional

 | Name | Description | Default | Example |
 |:-----|:------------|:--------|:--------|
+| workers | List of worker machine detail objects (unique name, identifying MAC address, FQDN) | [] | `[{name="node2", mac="52:54:00:b2:2f:86", domain="node2.example.com"}, {name="node3", mac="52:54:00:c3:61:77", domain="node3.example.com"}]` |
 | cached_install | PXE boot and install from the Matchbox `/assets` cache. Admin MUST have downloaded Fedora CoreOS images into the cache | false | true |
 | install_disk | Disk device where Fedora CoreOS should be installed | "sda" (not "/dev/sda" like Container Linux) | "sdb" |
 | networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
--- a/docs/fedora-coreos/digitalocean.md
+++ b/docs/fedora-coreos/digitalocean.md
@ -1,6 +1,6 @@
 # DigitalOcean

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on DigitalOcean with Fedora CoreOS.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on DigitalOcean with Fedora CoreOS.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create controller droplets, worker droplets, DNS records, tags, and TLS assets.

@ -51,11 +51,11 @@ terraform {
  required_providers {
    ct = {
      source  = "poseidon/ct"
-      version = "0.11.0"
+      version = "0.13.0"
    }
    digitalocean = {
      source = "digitalocean/digitalocean"
-      version = "2.22.1"
+      version = "2.27.1"
    }
  }
 }
@ -81,7 +81,7 @@ Define a Kubernetes cluster using the module `digital-ocean/fedora-coreos/kubern

 ```tf
 module "nemo" {
-  source = "git::https://github.com/poseidon/typhoon//digital-ocean/fedora-coreos/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//digital-ocean/fedora-coreos/kubernetes?ref=v1.27.4"

  # Digital Ocean
  cluster_name = "nemo"
@ -155,9 +155,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/nemo-config
 $ kubectl get nodes
 NAME               STATUS  ROLES   AGE  VERSION
-10.132.110.130     Ready   <none>  10m  v1.25.0
-10.132.115.81      Ready   <none>  10m  v1.25.0
-10.132.124.107     Ready   <none>  10m  v1.25.0
+10.132.110.130     Ready   <none>  10m  v1.27.4
+10.132.115.81      Ready   <none>  10m  v1.27.4
+10.132.124.107     Ready   <none>  10m  v1.27.4
 ```

 List the pods.
--- a/docs/fedora-coreos/google-cloud.md
+++ b/docs/fedora-coreos/google-cloud.md
@ -1,6 +1,6 @@
 # Google Cloud

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on Google Compute Engine with Fedora CoreOS.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on Google Compute Engine with Fedora CoreOS.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create a network, firewall rules, health checks, controller instances, worker managed instance group, load balancers, and TLS assets.

@ -52,11 +52,11 @@ terraform {
  required_providers {
    ct = {
      source  = "poseidon/ct"
-      version = "0.11.0"
+      version = "0.13.0"
    }
    google = {
      source = "hashicorp/google"
-      version = "4.33.0"
+      version = "4.59.0"
    }
  }
 }
@ -73,7 +73,7 @@ Define a Kubernetes cluster using the module `google-cloud/fedora-coreos/kuberne

 ```tf
 module "yavin" {
-  source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//google-cloud/fedora-coreos/kubernetes?ref=v1.27.4"

  # Google Cloud
  cluster_name  = "yavin"
@ -147,9 +147,9 @@ List nodes in the cluster.
 $ 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   v1.25.0
-yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.25.0
-yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.25.0
+yavin-controller-0.c.example-com.internal  <none>   Ready   6m   v1.27.4
+yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.27.4
+yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.27.4
 ```

 List the pods.
--- a/docs/flatcar-linux/aws.md
+++ b/docs/flatcar-linux/aws.md
@ -1,6 +1,6 @@
 # AWS

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on AWS with Flatcar Linux.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on AWS with Flatcar Linux.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create a VPC, gateway, subnets, security groups, controller instances, worker auto-scaling group, network load balancer, and TLS assets.

@ -55,7 +55,7 @@ terraform {
    }
    aws = {
      source = "hashicorp/aws"
-      version = "4.28.0"
+      version = "4.61.0"
    }
  }
 }
@ -72,7 +72,7 @@ Define a Kubernetes cluster using the module `aws/flatcar-linux/kubernetes`.

 ```tf
 module "tempest" {
-  source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//aws/flatcar-linux/kubernetes?ref=v1.27.4"

  # AWS
  cluster_name = "tempest"
@ -145,9 +145,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/tempest-config
 $ kubectl get nodes
 NAME           STATUS  ROLES   AGE  VERSION
-ip-10-0-3-155  Ready   <none>  10m  v1.25.0
-ip-10-0-26-65  Ready   <none>  10m  v1.25.0
-ip-10-0-41-21  Ready   <none>  10m  v1.25.0
+ip-10-0-3-155  Ready   <none>  10m  v1.27.4
+ip-10-0-26-65  Ready   <none>  10m  v1.27.4
+ip-10-0-41-21  Ready   <none>  10m  v1.27.4
 ```

 List the pods.
--- a/docs/flatcar-linux/azure.md
+++ b/docs/flatcar-linux/azure.md
@ -1,6 +1,6 @@
 # Azure

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on Azure with Flatcar Linux.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on Azure with Flatcar Linux.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create a resource group, virtual network, subnets, security groups, controller availability set, worker scale set, load balancer, and TLS assets.

@ -52,7 +52,7 @@ terraform {
    }
    azurerm = {
      source = "hashicorp/azurerm"
-      version = "3.20.0"
+      version = "3.50.0"
    }
  }
 }
@ -65,8 +65,8 @@ Additional configuration options are described in the `azurerm` provider [docs](
 Flatcar Linux publishes images to the Azure Marketplace and requires accepting terms.

 ```
-az vm image terms show --publish kinvolk --offer flatcar-container-linux-free --plan stable
 az vm image terms accept --publish kinvolk --offer flatcar-container-linux-free --plan stable
+az vm image terms accept --publish kinvolk --offer flatcar-container-linux-free --plan stable-gen2
 ```

 ## Cluster
@ -75,7 +75,7 @@ Define a Kubernetes cluster using the module `azure/flatcar-linux/kubernetes`.

 ```tf
 module "ramius" {
-  source = "git::https://github.com/poseidon/typhoon//azure/flatcar-linux/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//azure/flatcar-linux/kubernetes?ref=v1.27.4"

  # Azure
  cluster_name   = "ramius"
@ -149,9 +149,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/ramius-config
 $ kubectl get nodes
 NAME                  STATUS  ROLES   AGE  VERSION
-ramius-controller-0   Ready   <none>  24m  v1.25.0
-ramius-worker-000001  Ready   <none>  25m  v1.25.0
-ramius-worker-000002  Ready   <none>  24m  v1.25.0
+ramius-controller-0   Ready   <none>  24m  v1.27.4
+ramius-worker-000001  Ready   <none>  25m  v1.27.4
+ramius-worker-000002  Ready   <none>  24m  v1.27.4
 ```

 List the pods.
@ -227,7 +227,7 @@ Reference the DNS zone with `azurerm_dns_zone.clusters.name` and its resource gr
 | controller_count | Number of controllers (i.e. masters) | 1 | 1 |
 | worker_count | Number of workers | 1 | 3 |
 | controller_type | Machine type for controllers | "Standard_B2s" | See below |
-| worker_type | Machine type for workers | "Standard_DS1_v2" | See below |
+| worker_type | Machine type for workers | "Standard_D2as_v5" | See below |
 | os_image | Channel for a Container Linux derivative | "flatcar-stable" | flatcar-stable, flatcar-beta, flatcar-alpha |
 | disk_size | Size of the disk in GB | 30 | 100 |
 | worker_priority | Set priority to Spot to use reduced cost surplus capacity, with the tradeoff that instances can be deallocated at any time | Regular | Spot |
--- a/docs/flatcar-linux/bare-metal.md
+++ b/docs/flatcar-linux/bare-metal.md
@ -1,6 +1,6 @@
 # Bare-Metal

-In this tutorial, we'll network boot and provision a Kubernetes v1.25.0 cluster on bare-metal with Flatcar Linux.
+In this tutorial, we'll network boot and provision a Kubernetes v1.27.4 cluster on bare-metal with Flatcar Linux.

 First, we'll deploy a [Matchbox](https://github.com/poseidon/matchbox) service and setup a network boot environment. Then, we'll declare a Kubernetes cluster using the Typhoon Terraform module and power on machines. On PXE boot, machines will install Container Linux to disk, reboot into the disk install, and provision themselves as Kubernetes controllers or workers via Ignition.

@ -154,7 +154,7 @@ Define a Kubernetes cluster using the module `bare-metal/flatcar-linux/kubernete

 ```tf
 module "mercury" {
-  source = "git::https://github.com/poseidon/typhoon//bare-metal/flatcar-linux/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//bare-metal/flatcar-linux/kubernetes?ref=v1.27.4"

  # bare-metal
  cluster_name            = "mercury"
@ -190,6 +190,36 @@ module "mercury" {
 }
 ```

+Workers with similar features can be defined inline using the `workers` field as shown above. It's also possible to define discrete workers that attach to the cluster. Discrete workers are more advanced, but more verbose.
+
+```tf
+module "mercury-node1" {
+  source = "git::https://github.com/poseidon/typhoon//bare-metal/flatcar-linux/kubernetes/worker?ref=v1.27.4"
+
+  # bare-metal
+  cluster_name = "mercury"
+  matchbox_http_endpoint  = "http://matchbox.example.com"
+  os_channel              = "flatcar-stable"
+  os_version              = "2345.3.1"
+
+  # configuration
+  name               = "node2"
+  mac                = "52:54:00:b2:2f:86"
+  domain             = "node2.example.com"
+  kubeconfig         = module.mercury.kubeconfig-admin
+  ssh_authorized_key = "ssh-rsa AAAAB3Nz..."
+
+  # optional
+  snippets       = []
+  node_labels    = []
+  node_taints    = []
+  install_disk   = "/dev/vda"
+  cached_install = false
+}
+
+...
+```
+
 Reference the [variables docs](#variables) or the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-metal/flatcar-linux/kubernetes/variables.tf) source.

 ## ssh-agent
@ -293,9 +323,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/mercury-config
 $ kubectl get nodes
 NAME                STATUS  ROLES   AGE  VERSION
-node1.example.com   Ready   <none>  10m  v1.25.0
-node2.example.com   Ready   <none>  10m  v1.25.0
-node3.example.com   Ready   <none>  10m  v1.25.0
+node1.example.com   Ready   <none>  10m  v1.27.4
+node2.example.com   Ready   <none>  10m  v1.27.4
+node3.example.com   Ready   <none>  10m  v1.27.4
 ```

 List the pods.
@ -335,12 +365,12 @@ Check the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-me
 | k8s_domain_name | FQDN resolving to the controller(s) nodes. Workers and kubectl will communicate with this endpoint | "myk8s.example.com" |
 | ssh_authorized_key | SSH public key for user 'core' | "ssh-rsa AAAAB3Nz..." |
 | controllers | List of controller machine detail objects (unique name, identifying MAC address, FQDN) | `[{name="node1", mac="52:54:00:a1:9c:ae", domain="node1.example.com"}]` |
-| workers | List of worker machine detail objects (unique name, identifying MAC address, FQDN) | `[{name="node2", mac="52:54:00:b2:2f:86", domain="node2.example.com"}, {name="node3", mac="52:54:00:c3:61:77", domain="node3.example.com"}]` |

 ### Optional

 | Name | Description | Default | Example |
 |:-----|:------------|:--------|:--------|
+| workers | List of worker machine detail objects (unique name, identifying MAC address, FQDN) | [] | `[{name="node2", mac="52:54:00:b2:2f:86", domain="node2.example.com"}, {name="node3", mac="52:54:00:c3:61:77", domain="node3.example.com"}]` |
 | download_protocol | Protocol iPXE uses to download the kernel and initrd. iPXE must be compiled with [crypto](https://ipxe.org/crypto) support for https. Unused if cached_install is true | "https" | "http" |
 | cached_install | PXE boot and install from the Matchbox `/assets` cache. Admin MUST have downloaded Container Linux or Flatcar images into the cache | false | true |
 | install_disk | Disk device where Container Linux should be installed | "/dev/sda" | "/dev/sdb" |
@ -353,4 +383,4 @@ Check the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-me
 | kernel_args | Additional kernel args to provide at PXE boot | [] | ["kvm-intel.nested=1"] |
 | worker_node_labels | Map from worker name to list of initial node labels | {} | {"node2" = ["role=special"]} |
 | worker_node_taints | Map from worker name to list of initial node taints | {} | {"node2" = ["role=special:NoSchedule"]} |
-
+| oem_type | An OEM type to install with `flatcar-install`. | "" | "vmware_raw" |
--- a/docs/flatcar-linux/digitalocean.md
+++ b/docs/flatcar-linux/digitalocean.md
@ -1,6 +1,6 @@
 # DigitalOcean

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on DigitalOcean with Flatcar Linux.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on DigitalOcean with Flatcar Linux.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create controller droplets, worker droplets, DNS records, tags, and TLS assets.

@ -55,7 +55,7 @@ terraform {
    }
    digitalocean = {
      source = "digitalocean/digitalocean"
-      version = "2.22.1"
+      version = "2.27.1"
    }
  }
 }
@ -81,7 +81,7 @@ Define a Kubernetes cluster using the module `digital-ocean/flatcar-linux/kubern

 ```tf
 module "nemo" {
-  source = "git::https://github.com/poseidon/typhoon//digital-ocean/flatcar-linux/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//digital-ocean/flatcar-linux/kubernetes?ref=v1.27.4"

  # Digital Ocean
  cluster_name = "nemo"
@ -155,9 +155,9 @@ List nodes in the cluster.
 $ export KUBECONFIG=/home/user/.kube/configs/nemo-config
 $ kubectl get nodes
 NAME               STATUS  ROLES   AGE  VERSION
-10.132.110.130     Ready   <none>  10m  v1.25.0
-10.132.115.81      Ready   <none>  10m  v1.25.0
-10.132.124.107     Ready   <none>  10m  v1.25.0
+10.132.110.130     Ready   <none>  10m  v1.27.4
+10.132.115.81      Ready   <none>  10m  v1.27.4
+10.132.124.107     Ready   <none>  10m  v1.27.4
 ```

 List the pods.
--- a/docs/flatcar-linux/google-cloud.md
+++ b/docs/flatcar-linux/google-cloud.md
@ -1,6 +1,6 @@
 # Google Cloud

-In this tutorial, we'll create a Kubernetes v1.25.0 cluster on Google Compute Engine with Flatcar Linux.
+In this tutorial, we'll create a Kubernetes v1.27.4 cluster on Google Compute Engine with Flatcar Linux.

 We'll declare a Kubernetes cluster using the Typhoon Terraform module. Then apply the changes to create a network, firewall rules, health checks, controller instances, worker managed instance group, load balancers, and TLS assets.

@ -56,7 +56,7 @@ terraform {
    }
    google = {
      source = "hashicorp/google"
-      version = "4.33.0"
+      version = "4.59.0"
    }
  }
 }
@ -73,7 +73,7 @@ Define a Kubernetes cluster using the module `google-cloud/flatcar-linux/kuberne

 ```tf
 module "yavin" {
-  source = "git::https://github.com/poseidon/typhoon//google-cloud/flatcar-linux/kubernetes?ref=v1.25.0"
+  source = "git::https://github.com/poseidon/typhoon//google-cloud/flatcar-linux/kubernetes?ref=v1.27.4"

  # Google Cloud
  cluster_name  = "yavin"
@ -147,9 +147,9 @@ List nodes in the cluster.
 $ 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   v1.25.0
-yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.25.0
-yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.25.0
+yavin-controller-0.c.example-com.internal  <none>   Ready   6m   v1.27.4
+yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.27.4
+yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.27.4
 ```

 List the pods.
--- a/Show More
+++ b/Show More