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Clarify the condition when preStop hook is invoked

pull/41297/head
Qiming Teng 2023-05-24 12:07:55 +08:00
parent 589f10154f
commit ef1b3bfd4e
1 changed files with 5 additions and 4 deletions
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9
content/en/docs/concepts/workloads/pods/pod-lifecycle.md
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@ -454,10 +454,11 @@ An example flow:
as terminating (a graceful shutdown duration has been set), the kubelet begins the local Pod
shutdown process.
1. If one of the Pod's containers has defined a `preStop`
[hook](/docs/concepts/containers/container-lifecycle-hooks), the kubelet
runs that hook inside of the container. If the `preStop` hook is still running after the
grace period expires, the kubelet requests a small, one-off grace period extension of 2
seconds.
[hook](/docs/concepts/containers/container-lifecycle-hooks) and the `terminationGracePeriodSeconds`
in the Pod spec is not set to 0, the kubelet runs that hook inside of the container.
The default `terminationGracePeriodSeconds` setting is 30 seconds.
If the `preStop` hook is still running after the grace period expires, the kubelet requests
a small, one-off grace period extension of 2 seconds.
{{< note >}}
If the `preStop` hook needs longer to complete than the default grace period allows,
you must modify `terminationGracePeriodSeconds` to suit this.