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e3969fed1d
Automatic merge from submit-queue (batch tested with PRs 67745, 67432, 67569, 67825, 67943). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md. Fix VMWare VM freezing bug by reverting #51066 **What this PR does / why we need it**: kube-controller-manager, VSphere specific: When the controller tries to attach a Volume to Node A that is already attached to Node B, Node A freezes until the volume is attached. Kubernetes continues to try to attach the volume as it thinks that it's 'multi-attachable' when it's not. #51066 is the culprit. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes https://github.com/vmware/kubernetes/issues/500 / https://github.com/vmware/kubernetes/issues/502 (same issue) **Special notes for your reviewer**: - Repro: Vsphere installation, any k8s version from 1.8 and above, pod with attached PV/PVC/VMDK: 1. cordon the node which the pod is in 2. `kubectl delete po/[pod] --force --grace-period=0` 3. the pod is immediately rescheduled to a new node. Grab the new node from a `kubectl describe [pod]` and attempt to Ping it or SSH into it. 4. you can see that pings/ssh fail to reach the new node. `kubectl get node` shows it as 'NotReady'. New node is frozen until the volume is attached - usually 1 minute freeze for 1 volume in a low-load cluster, and many minutes more with higher loads and more volumes involved. - Patch verification: Tested a custom patched 1.9.10 kube-controller-manager with #51066 reverted and the above bug is resolved - can't repro it anymore. New node doesn't freeze at all, and attaching happens quite quickly, in a few seconds. **Release note**: ``` Fix VSphere VM Freezing bug by reverting #51066 ``` |
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