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tailscale/cmd/k8s-operator/deploy
Irbe Krumina 3f39211f98
cmd/k8s-operator: check that cluster traffic is routed to egress ProxyGroup Pod before marking it as ready (#14792)
This change builds on top of #14436 to ensure minimum downtime during egress ProxyGroup update rollouts:

- adds a readiness gate for ProxyGroup replicas that prevents kubelet from marking
the replica Pod as ready before a corresponding readiness condition has been added
to the Pod

- adds a reconciler that reconciles egress ProxyGroup Pods and, for each that is not ready,
if cluster traffic for relevant egress endpoints is routed via this Pod- if so add the
readiness condition to allow kubelet to mark the Pod as ready.

During the sequenced StatefulSet update rollouts kubelet does not restart
a Pod before the previous replica has been updated and marked as ready, so
ensuring that a replica is not marked as ready allows to avoid a temporary
post-update situation where all replicas have been restarted, but none of the
new ones are yet set up as an endpoint for the egress service, so cluster traffic is dropped.

Updates tailscale/tailscale#14326

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
10 months ago
..
chart cmd/k8s-operator: check that cluster traffic is routed to egress ProxyGroup Pod before marking it as ready (#14792) 10 months ago
crds go.{mod,sum},cmd/{k8s-operator,derper,stund}/depaware.txt: bump kube deps (#14601) 11 months ago
examples cmd/{containerboot,k8s-operator},k8s-operator,kube: add ProxyGroup controller (#13684) 1 year ago
manifests cmd/k8s-operator: check that cluster traffic is routed to egress ProxyGroup Pod before marking it as ready (#14792) 10 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.