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tailscale/cmd/k8s-operator/deploy
Tom Proctor f421907c38
all-kube: create Tailscale Service for HA kube-apiserver ProxyGroup (#16572)
Adds a new reconciler for ProxyGroups of type kube-apiserver that will
provision a Tailscale Service for each replica to advertise. Adds two
new condition types to the ProxyGroup, TailscaleServiceValid and
TailscaleServiceConfigured, to post updates on the state of that
reconciler in a way that's consistent with the service-pg reconciler.
The created Tailscale Service name is configurable via a new ProxyGroup
field spec.kubeAPISserver.ServiceName, which expects a string of the
form "svc:<dns-label>".

Lots of supporting changes were needed to implement this in a way that's
consistent with other operator workflows, including:

* Pulled containerboot's ensureServicesUnadvertised and certManager into
  kube/ libraries to be shared with k8s-proxy. Use those in k8s-proxy to
  aid Service cert sharing between replicas and graceful Service shutdown.
* For certManager, add an initial wait to the cert loop to wait until
  the domain appears in the devices's netmap to avoid a guaranteed error
  on the first issue attempt when it's quick to start.
* Made several methods in ingress-for-pg.go and svc-for-pg.go into
  functions to share with the new reconciler
* Added a Resource struct to the owner refs stored in Tailscale Service
  annotations to be able to distinguish between Ingress- and ProxyGroup-
  based Services that need cleaning up in the Tailscale API.
* Added a ListVIPServices method to the internal tailscale client to aid
  cleaning up orphaned Services
* Support for reading config from a kube Secret, and partial support for
  config reloading, to prevent us having to force Pod restarts when
  config changes.
* Fixed up the zap logger so it's possible to set debug log level.

Updates #13358

Change-Id: Ia9607441157dd91fb9b6ecbc318eecbef446e116
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
5 months ago
..
chart cmd/{k8s-operator,k8s-proxy}: add kube-apiserver ProxyGroup type (#16266) 5 months ago
crds all-kube: create Tailscale Service for HA kube-apiserver ProxyGroup (#16572) 5 months ago
examples cmd/{containerboot,k8s-operator},k8s-operator,kube: add ProxyGroup controller (#13684) 1 year ago
manifests all-kube: create Tailscale Service for HA kube-apiserver ProxyGroup (#16572) 5 months ago
README.md cmd/k8s-operator: generate static kube manifests from the Helm chart. (#10436) 2 years ago

README.md

Tailscale Kubernetes operator deployment manifests

./cmd/k8s-operator/deploy contain various Tailscale Kubernetes operator deployment manifests.

Helm chart

./cmd/k8s-operator/deploy/chart contains Tailscale operator Helm chart templates. The chart templates are also used to generate the static manifest, so developers must ensure that any changes applied to the chart have been propagated to the static manifest by running go generate tailscale.com/cmd/k8s-operator

Static manifests

./cmd/k8s-operator/deploy/manifests/operator.yaml is a static manifest for the operator generated from the Helm chart templates for the operator.