Merge pull request #26840 from mltsy/patch-1
Clarify sources of voluntary disruptions
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@ -80,12 +80,14 @@ Here are some ways to mitigate involuntary disruptions:
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[multi-zone cluster](/docs/setup/multiple-zones).)
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[multi-zone cluster](/docs/setup/multiple-zones).)
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The frequency of voluntary disruptions varies. On a basic Kubernetes cluster, there are
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The frequency of voluntary disruptions varies. On a basic Kubernetes cluster, there are
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no voluntary disruptions at all. However, your cluster administrator or hosting provider
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no automated voluntary disruptions (only user-triggered ones). However, your cluster administrator or hosting provider
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may run some additional services which cause voluntary disruptions. For example,
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may run some additional services which cause voluntary disruptions. For example,
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rolling out node software updates can cause voluntary disruptions. Also, some implementations
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rolling out node software updates can cause voluntary disruptions. Also, some implementations
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of cluster (node) autoscaling may cause voluntary disruptions to defragment and compact nodes.
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of cluster (node) autoscaling may cause voluntary disruptions to defragment and compact nodes.
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Your cluster administrator or hosting provider should have documented what level of voluntary
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Your cluster administrator or hosting provider should have documented what level of voluntary
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disruptions, if any, to expect.
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disruptions, if any, to expect. Certain configuration options, such as
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[using PriorityClasses](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/)
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in your pod spec can also cause voluntary (and involuntary) disruptions.
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## Pod disruption budgets
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## Pod disruption budgets
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