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Merge pull request #98103 from gjkim42/delete-static-pod-gracefully

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Delete static pod gracefully and fix mirrorPodTerminationMap leak
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Kubernetes Prow Robot 2021-01-19 10:01:44 -08:00 committed by GitHub
commit 09f4baed35
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1 changed files with 10 additions and 4 deletions
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14
pkg/kubelet/kubelet.go
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@ -1498,6 +1498,13 @@ func (kl *Kubelet) syncPod(o syncPodOptions) error {
return nil return nil
} }
// If the pod is a static pod and its mirror pod is still gracefully terminating,
// we do not want to start the new static pod until the old static pod is gracefully terminated.
podFullName := kubecontainer.GetPodFullName(pod)
if kl.podKiller.IsMirrorPodPendingTerminationByPodName(podFullName) {
return fmt.Errorf("pod %q is pending termination", podFullName)
}
// Latency measurements for the main workflow are relative to the // Latency measurements for the main workflow are relative to the
// first time the pod was seen by the API server. // first time the pod was seen by the API server.
var firstSeenTime time.Time var firstSeenTime time.Time
@ -1633,7 +1640,6 @@ func (kl *Kubelet) syncPod(o syncPodOptions) error {
// Create Mirror Pod for Static Pod if it doesn't already exist // Create Mirror Pod for Static Pod if it doesn't already exist
if kubetypes.IsStaticPod(pod) { if kubetypes.IsStaticPod(pod) {
podFullName := kubecontainer.GetPodFullName(pod)
deleted := false deleted := false
if mirrorPod != nil { if mirrorPod != nil {
if mirrorPod.DeletionTimestamp != nil || !kl.podManager.IsMirrorPodOf(mirrorPod, pod) { if mirrorPod.DeletionTimestamp != nil || !kl.podManager.IsMirrorPodOf(mirrorPod, pod) {
@ -1764,6 +1770,9 @@ func (kl *Kubelet) deletePod(pod *v1.Pod) error {
} }
podPair := kubecontainer.PodPair{APIPod: pod, RunningPod: &runningPod} podPair := kubecontainer.PodPair{APIPod: pod, RunningPod: &runningPod}
if _, ok := kl.podManager.GetMirrorPodByPod(pod); ok {
kl.podKiller.MarkMirrorPodPendingTermination(pod)
}
kl.podKiller.KillPod(&podPair) kl.podKiller.KillPod(&podPair)
// We leave the volume/directory cleanup to the periodic cleanup routine. // We leave the volume/directory cleanup to the periodic cleanup routine.
@ -2102,9 +2111,6 @@ func (kl *Kubelet) HandlePodRemoves(pods []*v1.Pod) {
kl.handleMirrorPod(pod, start) kl.handleMirrorPod(pod, start)
continue continue
} }
if _, ok := kl.podManager.GetMirrorPodByPod(pod); ok {
kl.podKiller.MarkMirrorPodPendingTermination(pod)
}
// Deletion is allowed to fail because the periodic cleanup routine // Deletion is allowed to fail because the periodic cleanup routine
// will trigger deletion again. // will trigger deletion again.
if err := kl.deletePod(pod); err != nil { if err := kl.deletePod(pod); err != nil {