23 lines
1.2 KiB
Go
23 lines
1.2 KiB
Go
package controllers
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import corev1 "k8s.io/api/core/v1"
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// Force the runner pod managed by either RunnerDeployment and RunnerSet to have restartPolicy=Never.
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// See https://github.com/actions-runner-controller/actions-runner-controller/issues/1369 for more context.
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//
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// This is to prevent runner pods from stucking in Terminating when a K8s node disappeared along with the runnr pod and the runner container within it.
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//
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// Previously, we used restartPolicy of OnFailure, it turned wrong later, and therefore we now set Never.
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//
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// When the restartPolicy is OnFailure and the node disappeared, runner pods on the node seem to stuck in state.terminated==nil, state.waiting!=nil, and state.lastTerminationState!=nil,
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// and will ever become Running.
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// It's probably due to that the node onto which the pods have been scheduled will ever come back, hence the container restart attempt swill ever succeed,
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// the pods stuck waiting for successful restarts forever.
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//
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// By forcing runner pods to never restart, we hope there will be no chances of pods being stuck waiting.
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func forceRunnerPodRestartPolicyNever(pod *corev1.Pod) {
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if pod.Spec.RestartPolicy != corev1.RestartPolicyNever {
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pod.Spec.RestartPolicy = corev1.RestartPolicyNever
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}
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}
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