Force Delete StatefulSet and Pods

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Kubernetes version 1.13.2

Issue description

I encountered the problem that when delete statefulset the execution hangs, for example:

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kubectl delete statefulset is-en-conductor

it cannot delete the statefulset and associated pods at all

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[root@opsft-lb-1 OpenShift] oc get all
NAME                             DESIRED   CURRENT   AGE
statefulsets/is-en-conductor     0         1         5h
statefulsets/is-engine-compute   0         2         5h

NAME                     READY     STATUS        RESTARTS   AGE
po/is-en-conductor-0     0/1       Terminating   2          1h
po/is-engine-compute-0   1/1       Running       0          5h
po/is-engine-compute-1   0/1       Terminating   0          5h

Solution

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kubectl delete statefulsets <statefulset name> --force --grace-period=0 --cascade=false

now we only have hanging pods, force delete them

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NAME                     READY     STATUS        RESTARTS   AGE
po/is-en-conductor-0     0/1       Terminating   2          1h
po/is-engine-compute-0   1/1       Running       0          5h
po/is-engine-compute-1   0/1       Terminating   0          5h
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kubectl delete pod <pod name> --force --grace-period=0