Improve daemonset doc for more taints tolerated
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@@ -98,9 +98,20 @@ when the pod is created, so it is ignored by the scheduler). Therefore:
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- DaemonSet controller can make pods even when the scheduler has not been started, which can help cluster
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bootstrap.
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Daemon pods do respect [taints and tolerations](/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature), but they are
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created with `NoExecute` tolerations for the `node.alpha.kubernetes.io/notReady` and `node.alpha.kubernetes.io/unreachable`
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taints with no `tolerationSeconds`. This ensures that when the `TaintBasedEvictions` alpha feature is enabled,
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Daemon pods do respect [taints and tolerations](/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature),
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but they are created with `NoExecute` tolerations for the following taints with no `tolerationSeconds`:
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- `node.alpha.kubernetes.io/notReady`
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- `node.alpha.kubernetes.io/unreachable`
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- `node.alpha.kubernetes.io/memoryPressure`
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- `node.alpha.kubernetes.io/diskPressure`
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When the support to critical pods is enabled and the pods in a DaemonSet are
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labelled as critical, the Daemon pods are created with an additional
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`NoExecute` toleration for the `node.alpha.kubernetes.io/outOfDisk` taint with
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no `tolerationSeconds`.
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This ensures that when the `TaintBasedEvictions` alpha feature is enabled,
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they will not be evicted when there are node problems such as a network partition. (When the
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`TaintBasedEvictions` feature is not enabled, they are also not evicted in these scenarios, but
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due to hard-coded behavior of the NodeController rather than due to tolerations).
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