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docs: add etcd cluster upgrade guide to configure-upgrade-etcd (#31833)

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* docs: add etcd cluster upgrade guide to configure-upgrade-etcd

* Update content/en/docs/tasks/administer-cluster/configure-upgrade-etcd.md

Co-authored-by: championshuttler <shivams2799@gmail.com>

* Update content/en/docs/tasks/administer-cluster/configure-upgrade-etcd.md

Co-authored-by: Rey Lejano <rlejano@gmail.com>

* put "For more details..."

* Update configure-upgrade-etcd.md

Co-authored-by: championshuttler <shivams2799@gmail.com>
Co-authored-by: Rey Lejano <rlejano@gmail.com>
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mango
2022-02-28 09:04:56 +08:00
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content/en/docs/tasks/administer-cluster/configure-upgrade-etcd.md
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@@ -361,3 +361,12 @@ We also recommend restarting any components (e.g. `kube-scheduler`,
stale data. Note that in practice, the restore takes a bit of time. During the
restoration, critical components will lose leader lock and restart themselves.
{{< /note >}}
## Upgrading etcd clusters
For more details on etcd upgrade, please refer to the [etcd upgrades](https://etcd.io/docs/latest/upgrades/) documentation.
{{< note >}}
Before you start an upgrade, please back up your etcd cluster first.
{{< /note >}}