feat: RunnerSet backed by StatefulSet by mumoshu · Pull Request #629 · actions/actions-runner-controller

feat: RunnerSet backed by StatefulSet by mumoshu · Pull Request #629 · actions/actions-runner-controller

Unlike a runner deployment, a runner set can manage a set of stateful runners by combining a statefulset and an admission webhook that mutates statefulset-managed pods with required envvars and registration tokens.

Resolves #613
Ref #612

mumoshu changed the title ~~WIP: feat: RunnerSet backed by StatefulSet~~ feat: RunnerSet backed by StatefulSet

…r-controller got failed after the mutating webhook has been registered

…DOCKER_HOST and DOCKER_TLS_VERIFY envvars when dockerdWithinRunner=false

…changes when there were no changes in runnerset spec

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`HRA.Spec.ScaleTargetRef.Kind` is added to denote that the scale-target is a RunnerSet.

It defaults to `RunnerDeployment` for backward compatibility.

```
apiVersion: actions.summerwind.dev/v1alpha1
kind: HorizontalRunnerAutoscaler
metadata:
  name: myhra
spec:
  scaleTargetRef:
    kind: RunnerSet
    name: myrunnerset
```

Ref #629
Ref #613
Ref #612

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