mirror of https://github.com/k3s-io/k3s
28df7a1cae
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.. kubelet: fix inconsistent display of terminated pod IPs PLEG and kubelet race when reading and sending pod status to the apiserver. PLEG inserts status into a cache, and then signals kubelet. Kubelet then eventually reads the status out of that cache, but in the mean time the status could have been changed by PLEG. When a pod exits, pod status will no longer include the pod's IP address because the network plugin/runtime will report "" for terminated pod IPs. If this status gets inserted into the PLEG cache before kubelet gets the status out of the cache, kubelet will see a blank pod IP address. This happens in about 1/5 of cases when pods are short-lived, and somewhat less frequently for longer running pods. To ensure consistency for properties of dead pods, copy an old status update's IP address over to the new status update if (a) the new status update's IP is missing and (b) all sandboxes of the pod are dead/not-ready (eg, no possibility for a valid IP from the sandbox). Fixes: https://github.com/kubernetes/kubernetes/issues/47265 Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1449373 @eparis @freehan @kubernetes/rh-networking @kubernetes/sig-network-misc |
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| BUILD | ||
| doc.go | ||
| generic.go | ||
| generic_test.go | ||
| pleg.go | ||