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Merge pull request #35484 from smarterclayton/delete_warning

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Add --force to kubectl delete and explain force deletion

--force is required for --grace-period=0. --now is == --grace-period=1.
Improve command help to explain what graceful deletion is and warn about
force deletion.

Part of #34160 & #29033

```release-note
In order to bypass graceful deletion of pods (to immediately remove the pod from the API) the user must now provide the `--force` flag in addition to `--grace-period=0`.  This prevents users from accidentally force deleting pods without being aware of the consequences of force deletion.  Force deleting pods for resources like StatefulSets can result in multiple pods with the same name having running processes in the cluster, which may lead to data corruption or data inconsistency when using shared storage or common API endpoints.
```
This commit is contained in:
Kubernetes Submit Queue
2016-11-05 11:19:04 -07:00
committed by GitHub
parent b9e3b0ffa3 6e25830378
commit 47519962bf
4 changed files with 55 additions and 20 deletions
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2
hack/lib/test.sh
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@@ -23,7 +23,7 @@ readonly red=$(tput setaf 1)
readonly green=$(tput setaf 2)
kube::test::clear_all() {
kubectl delete "${kube_flags[@]}" rc,pods --all --grace-period=0
kubectl delete "${kube_flags[@]}" rc,pods --all --grace-period=0 --force
}
# Force exact match of a returned result for a object query. Wrap this with || to support multiple