Commit Graph

132 Commits

Author SHA1 Message Date
Dalton Hubble d9c7a9e049 Add/update docs for asset_dir and kubeconfig usage
* Original tutorials favored including the platform (e.g.
google-cloud) in modules (e.g. google-cloud-yavin). Prefer
naming conventions where each module / cluster has a simple
name (e.g. yavin) since the platform is usually redundant
* Retain the example cluster naming themes per platform
2019-12-05 22:56:42 -08:00
Dalton Hubble 2837275265 Introduce cluster creation without local writes to asset_dir
* Allow generated assets (TLS materials, manifests) to be
securely distributed to controller node(s) via file provisioner
(i.e. ssh-agent) as an assets bundle file, rather than relying
on assets being locally rendered to disk in an asset_dir and
then securely distributed
* Change `asset_dir` from required to optional. Left unset,
asset_dir defaults to "" and no assets will be written to
files on the machine that runs terraform apply
* Enhancement: Managed cluster assets are kept only in Terraform
state, which supports different backends (GCS, S3, etcd, etc) and
optional encryption. terraform apply accesses state, runs in-memory,
and distributes sensitive materials to controllers without making
use of local disk (simplifies use in CI systems)
* Enhancement: Improve asset unpack and layout process to position
etcd certificates and control plane certificates more cleanly,
without unneeded secret materials

Details:

* Terraform file provisioner support for distributing directories of
contents (with unknown structure) has been limited to reading from a
local directory, meaning local writes to asset_dir were required.
https://github.com/poseidon/typhoon/issues/585 discusses the problem
and newer or upcoming Terraform features that might help.
* Observation: Terraform provisioner support for single files works
well, but iteration isn't viable. We're also constrained to Terraform
language features on the apply side (no extra plugins, no shelling out)
and CoreOS / Fedora tools on the receive side.
* Take a map representation of the contents that would have been splayed
out in asset_dir and pack/encode them into a single file format devised
for easy unpacking. Use an awk one-liner on the receive side to unpack.
In pratice, this has worked well and its rather nice that a single
assets file is transferred by file provisioner (all or none)

Rel: https://github.com/poseidon/terraform-render-bootstrap/pull/162
2019-12-05 01:24:50 -08:00
Dalton Hubble 4b485a9bf2 Fix recent deletion of bootstrap module pinned SHA
* Fix deletion of bootstrap module pinned SHA, which was
introduced recently through an automation mistake creating
https://github.com/poseidon/typhoon/pull/589
2019-11-21 22:34:09 -08:00
Dalton Hubble 8a9e8595ae Fix terraform fmt formatting 2019-11-13 23:44:02 -08:00
Dalton Hubble 0e4ee5efc9 Add small CPU resource requests to static pods
* Set small CPU requests on static pods kube-apiserver,
kube-controller-manager, and kube-scheduler to align with
upstream tooling and for edge cases
* Effectively, a practical case for these requests hasn't been
observed. However, a small static pod CPU request may offer
a slight benefit if a controller became overloaded and the
below mechanisms were insufficient

Existing safeguards:

* Control plane nodes are tainted to isolate them from
ordinary workloads. Even dense workloads can only compress
CPU resources on worker nodes.
* Control plane static pods use the highest priority class, so
contention favors control plane pods (over say node-exporter)
and CPU is compressible too.

See: https://github.com/poseidon/terraform-render-bootstrap/pull/161
2019-11-13 17:18:45 -08:00
Dalton Hubble a271b9f340 Update CoreDNS from v1.6.2 to v1.6.5
* Add health `lameduck` option 5s. Before CoreDNS shuts down, it will
wait and report unhealthy for 5s to allow time for plugins to shutdown
cleanly
* Minor bug fixes over a few releases
* https://coredns.io/2019/08/31/coredns-1.6.3-release/
* https://coredns.io/2019/09/27/coredns-1.6.4-release/
* https://coredns.io/2019/11/05/coredns-1.6.5-release/
2019-11-13 16:47:44 -08:00
Dalton Hubble cb0598e275 Adopt Terraform v0.12 templatefile function
* Update terraform-render-bootstrap module to adopt the
Terrform v0.12 templatefile function feature to replace
the use of terraform-provider-template's `template_dir`
* Require Terraform v0.12.6+ which adds `for_each`

Background:

* `template_dir` was added to `terraform-provider-template`
to add support for template directory rendering in CoreOS
Tectonic Kubernetes distribution (~2017)
* Terraform v0.12 introduced a native `templatefile` function
and v0.12.6 introduced native `for_each` support (July 2019)
that makes it possible to replace `template_dir` usage
2019-11-13 16:33:36 -08:00
Dalton Hubble d7061020ba Update Kubernetes from v1.16.2 to v1.16.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.16.md#v1163
2019-11-13 13:05:15 -08:00
Dalton Hubble 2c163503f1 Update etcd from v3.4.2 to v3.4.3
* etcd v3.4.3 builds with Go v1.12.12 instead of v1.12.9
and adds a few minor metrics fixes
* https://github.com/etcd-io/etcd/compare/v3.4.2...v3.4.3
2019-11-07 11:41:01 -08:00
Dalton Hubble 0034a15711 Update Calico from v3.10.0 to v3.10.1
* https://docs.projectcalico.org/v3.10/release-notes/
2019-11-07 11:38:32 -08:00
Konstantinos Koukopoulos 38957163cb Output resource_group_id in Azure (#577)
* Add an output variable `resource_group_id` to the azure module
2019-10-31 01:05:04 -07:00
Dalton Hubble 4775e9d0f7 Upgrade Calico v3.9.2 to v3.10.0
* Allow advertising Kubernetes service ClusterIPs to BGPPeer
routers via a BGPConfiguration
* Improve EdgeRouter docs about routes and BGP
* https://docs.projectcalico.org/v3.10/release-notes/
* https://docs.projectcalico.org/v3.10/networking/advertise-service-ips
2019-10-27 14:13:41 -07:00
Dalton Hubble d418045929 Switch kube-proxy from iptables mode to ipvs mode
* Kubernetes v1.11 considered kube-proxy IPVS mode GA
* Many problems were found #321
* Since then, major blockers seem to have been addressed
2019-10-27 00:37:41 -07:00
Dalton Hubble e6bc5143aa Default to Calico as the CNI provider on Azure/DigitalOcean
* Change `networking` default from flannel to calico on
Azure and DigitalOcean
* AWS, bare-metal, and Google Cloud continue to default
to Calico (as they have since v1.7.5)
* Typhoon now defaults to using Calico and supporting
NetworkPolicy on all platforms
2019-10-15 23:15:40 -07:00
Dalton Hubble 24fc440d83 Update Kubernetes from v1.16.1 to v1.16.2
* Update Calico from v3.9.1 to v3.9.2
2019-10-15 22:42:52 -07:00
Dalton Hubble a6702573a2 Update etcd from v3.4.1 to v3.4.2
* https://github.com/etcd-io/etcd/releases/tag/v3.4.2
2019-10-15 00:06:15 -07:00
Dalton Hubble d874bdd17d Update bootstrap module control plane manifests and type constraints
* Remove unneeded control plane flags that correspond to defaults
* Adopt Terraform v0.12 type constraints in bootstrap module
2019-10-06 21:09:30 -07:00
Dalton Hubble 1c5ed84fc2 Update Kubernetes from v1.16.0 to v1.16.1
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.16.md#v1161
2019-10-02 21:31:55 -07:00
Dalton Hubble fdd6882a87 Add stricter types to Azure modules
* Review variables available in Azure kubernetes and workers
modules and sync with documentation
* Fix internal workers module default type to Standard_DS1_v2
2019-09-30 22:20:20 -07:00
Dalton Hubble a6de245d8a Rename bootkube.tf to bootstrap.tf
* Typhoon no longer uses the bootkube project
2019-09-29 11:30:49 -07:00
Dalton Hubble 96afa6a531 Update Calico from v3.8.2 to v3.9.1
* https://docs.projectcalico.org/v3.9/release-notes/
2019-09-29 11:22:53 -07:00
Dalton Hubble 3e34fb075b Update etcd from v3.4.0 to v3.4.1
* https://github.com/etcd-io/etcd/releases/tag/v3.4.1
2019-09-28 15:09:57 -07:00
Dalton Hubble 9bfb1c5faf Update docs and variable types for worker node_labels
* Document worker pools `node_labels` variable to set the
initial node labels for a homogeneous set of workers
* Document `worker_node_labels` convenience variable to
set the initial node labels for default worker nodes
2019-09-28 15:05:12 -07:00
Valer Cara 99ab81f79c Add node_labels variable in workers modules to set initial node labels (#550)
* Also add `worker_node_labels` variable in `kubernetes` modules to set
initial node labels for the default workers
2019-09-28 14:59:24 -07:00
Dalton Hubble 5b06e0e869 Organize and cleanup Kubelet ExecStartPre
* Sort Kubelet ExecStartPre mkdir commands
* Remove unused inactive-manifests and checkpoint-secrets
directories (were used by bootkube self-hosting)
2019-09-19 00:38:34 -07:00
Dalton Hubble b951aca66f Create /etc/kubernetes/manifests before asset copy
* Fix issue (present since bootkube->bootstrap switch) where
controller asset copy could fail if /etc/kubernetes/manifests
wasn't created in time on platforms using path activation for
the Kubelet (observed on DigitalOcean, also possible on
bare-metal)
2019-09-19 00:30:53 -07:00
Dalton Hubble 9da3725738 Update Kubernetes from v1.15.3 to v1.16.0
* Drop `node-role.kubernetes.io/master` and
`node-role.kubernetes.io/node` node labels
* Kubelet (v1.16) now rejects the node labels used
in the kubectl get nodes ROLES output
* https://github.com/kubernetes/kubernetes/issues/75457
2019-09-18 22:53:06 -07:00
Dalton Hubble fd12f3612b Rename CA organization from bootkube to typhoon
* Rename the organization in generated CA certificates from
bootkube to typhoon. Avoid confusion with the bootkube project
* https://github.com/poseidon/terraform-render-bootstrap/pull/149
2019-09-14 16:56:53 -07:00
Dalton Hubble 96b646cf6d Rename bootkube modules to bootstrap
* Rename render module from bootkube to bootstrap. Avoid
confusion with the kubernetes-incubator/bootkube tool since
it is no longer used
* Use the poseidon/terraform-render-bootstrap Terraform module
(formerly poseidon/terraform-render-bootkube)
* https://github.com/poseidon/terraform-render-bootkube/pull/149
2019-09-14 16:24:32 -07:00
Dalton Hubble b15c60fa2f Update CHANGES for control plane static pod switch
* Remove old references to bootkube / self-hosted
2019-09-09 22:48:48 -07:00
Dalton Hubble db947537d1 Migrate GCP, DO, Azure to static pod control plane
* Run a kube-apiserver, kube-scheduler, and kube-controller-manager
static pod on each controller node. Previously, kube-apiserver was
self-hosted as a DaemonSet across controllers and kube-scheduler
and kube-controller-manager were a Deployment (with 2 or
controller_count many replicas).
* Remove bootkube bootstrap and pivot to self-hosted
* Remove pod-checkpointer manifests (no longer needed)
2019-09-09 22:37:31 -07:00
Dalton Hubble 4a7083d94a Change Azure default controller_type and worker_type
* Change default controller_type to Standard_B2s. A B2s is cheaper
by $17/month and provides 2 vCPU, 4GB RAM (vs 1 vCPU, 3.5GB RAM)
* Change default worker_type to Standard_DS1_v2. F1 was the previous
generation. The DS1_v2 is newer, similar cost, more memory, and still
supports Low Priority mode, if desired
2019-09-09 22:34:28 -07:00
Dalton Hubble c20683067d Update etcd from v3.3.15 to v3.4.0
* https://github.com/etcd-io/etcd/releases/tag/v3.4.0
2019-09-08 15:32:49 -07:00
Dalton Hubble 4d5f962d76 Update CoreDNS from v1.5.0 to v1.6.2
* https://coredns.io/2019/06/26/coredns-1.5.1-release/
* https://coredns.io/2019/07/03/coredns-1.5.2-release/
* https://coredns.io/2019/07/28/coredns-1.6.0-release/
* https://coredns.io/2019/08/02/coredns-1.6.1-release/
* https://coredns.io/2019/08/13/coredns-1.6.2-release/
2019-08-31 15:57:42 -07:00
Dalton Hubble c42139beaa Update etcd from v3.3.14 to v3.3.15
* No functional changes, just changes to vendoring tools
(go modules -> glide). Still, update to v3.3.15 anyway
* https://github.com/etcd-io/etcd/compare/v3.3.14...v3.3.15
2019-08-19 15:05:21 -07:00
Dalton Hubble 35c2763ab0 Update Kubernetes from v1.15.2 to v1.15.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md/#v1153
2019-08-19 14:49:24 -07:00
Dalton Hubble 8f412e2f09 Update etcd from v3.3.13 to v3.3.14
* https://github.com/etcd-io/etcd/releases/tag/v3.3.14
2019-08-18 21:05:06 -07:00
Dalton Hubble 3c3708d58e Update Calico from v3.8.1 to v3.8.2
* https://docs.projectcalico.org/v3.8/release-notes/
2019-08-16 15:38:23 -07:00
Dalton Hubble 2227f2cc62 Update Kubernetes from v1.15.1 to v1.15.2
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#v1152
2019-08-05 08:48:57 -07:00
Dalton Hubble dcd6733649 Update Calico from v3.8.0 to v3.8.1
* https://docs.projectcalico.org/v3.8/release-notes/
2019-07-27 15:31:13 -07:00
Dalton Hubble c8df349e55 Fix to add all Azure controller nodes to address pool
* Add all Azure controllers to the apiserver load balancer
backend address pool
* Previously, kube-apiserver availability relied on the 0th
controller being up. Multi-controller was just providing etcd
data redundancy
2019-07-21 10:38:17 -07:00
Dalton Hubble e0c7676a15 Update Kubernetes from v1.15.0 to v1.15.1
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#downloads-for-v1151
2019-07-19 01:21:08 -07:00
Dalton Hubble dfa6bcfecf Relax terraform-provider-ct version constraint
* Allow updating terraform-provider-ct to any release
beyond v0.3.2, but below v1.0. This relaxes the prior
constraint that allowed only v0.3.y provider versions
2019-07-16 22:07:37 -07:00
Dalton Hubble 9e91d7f011 Upgrade Calico from v3.7.4 to v3.8.0
* Enable CNI bandwidth plugin for traffic shaping
* https://kubernetes.io/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/#support-traffic-shaping
2019-07-11 21:01:41 -07:00
Dalton Hubble 69d064bfdf Run kube-apiserver with lower privilege user (nobody)
* Run kube-apiserver as a non-root user (nobody). User
no longer needs to bind low number ports.
* On most platforms, the kube-apiserver load balancer listens
on 6443 and fronts controllers with kube-apiserver pods using
port 6443. Google Cloud TCP proxy load balancers cannot listen
on 6443. However, GCP's load balancer can be made to listen on
443, while kube-apiserver uses 6443 across all platforms.
2019-07-08 20:52:00 -07:00
Dalton Hubble 8d373b5850 Update Calico from v3.7.3 to v3.7.4
* https://docs.projectcalico.org/v3.7/release-notes/
2019-07-02 20:18:02 -07:00
Dalton Hubble 408e60075a Update Kubernetes from v1.14.3 to v1.15.0
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#v1150
* Remove docs referring to possible v1.14.4 release
2019-06-23 13:12:18 -07:00
Dalton Hubble 405015f52c Remove Fedora Atomic documentation
* Typhoon for Fedora Atomic was deprecated in March 2019
* https://typhoon.psdn.io/announce/#march-27-2019
2019-06-19 22:21:58 -07:00
Dalton Hubble 21fb632e90 Update Calico from v3.7.2 to v3.7.3
* https://docs.projectcalico.org/v3.7/release-notes/
2019-06-13 23:54:20 -07:00
Dalton Hubble 28506df9c7 Avoid unneeded rotations of Regular priority virtual machine scale sets
* Azure only allows `eviction_policy` to be set for Low priority VMs.
Supporting Low priority VMs meant when Regular VMs were used, each
`terraform apply` rolled workers, to set eviction_policy to null.
* Terraform v0.12 nullable variables fix the issue and plan does not
produce a diff
2019-06-06 09:50:37 -07:00