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Merge pull request #2179 from apoorvajagtap/nodedrain-2178

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Documents node draining behvaiour during Rancher upgrades
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Sunil Singh
2026-02-10 15:17:47 -08:00
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parent ec6ca0421f a71cd82b3b
commit fb61897f02
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versioned_docs/version-2.9/getting-started/installation-and-upgrade/upgrade-and-roll-back-kubernetes.md
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@@ -96,7 +96,8 @@ To enable draining each node during a cluster upgrade,
:::note
There is a [known issue](https://github.com/rancher/rancher/issues/25478) in which the Rancher UI doesn't show the state of etcd and controlplane as drained, even though they are being drained.
- There is a [known issue](https://github.com/rancher/rancher/issues/25478) in which the Rancher UI doesn't show the state of etcd and controlplane as drained, even though they are being drained.
- During an upgrade, nodes may be drained even when no user-visible YAML changes are present. This can occur if non-dynamic configuration files are updated or if a new `system-agent-installer` image is introduced. In such cases, Rancher generates a new upgrade plan, resulting in a new plan hash. When `Upgrade Strategy` is set to `Drain nodes`, this plan change can trigger node draining.
:::