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Update content/en/docs/tasks/administer-cluster/safely-drain-node.md 

Co-authored-by: Tim Bannister <tim@scalefactory.com>
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Thomas Güttler 2023-01-13 11:39:39 +01:00 committed by GitHub
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@ -69,10 +69,12 @@ Next, tell Kubernetes to drain the node:
kubectl drain --ignore-daemonsets <node name>
```
If there are daemon set managed pods, drain will not proceed without `--ignore-daemonsets`,
and regardless it will not delete any daemon set managed pods,
because those pods would be immediately replaced by the daemon set controller,
which ignores unschedulable markings.
If there are DaemonSet managed pods, drain will usually not succeed unless you specify
`--ignore-daemonsets`. The `kubectl drain` subcommand on its own does not actually drain
a node of its DaemonSet pods:
the DaemonSet controller (part of the control plane) immediately replaces missing Pods with
new equivalent Pods. The DaemonSet controller also creates Pods that ignore unschedulable
taints, which allows the new Pods to launch onto a node that you are draining.
Once it returns (without giving an error), you can power down the node
(or equivalently, if on a cloud platform, delete the virtual machine backing the node).