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Update etcd-backup-and-restore.md

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vpalazhi 2021-03-25 18:58:39 -04:00 committed by GitHub
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practice-questions-answers/cluster-maintenance/backup-etcd/etcd-backup-and-restore.md
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@ -64,7 +64,7 @@ We have now restored the etcd snapshot to a new path on the controlplane - **/v
type: DirectoryOrCreate type: DirectoryOrCreate
name: etcd-data name: etcd-data
``` ```
With this change, /var/lib/etcd on the **container** points to /var/lib/etcd-from-backup on the host (which is what we want) With this change, /var/lib/etcd on the **container** points to /var/lib/etcd-from-backup on the **controlplane** (which is what we want)
When this file is updated, the ETCD pod is automatically re-created as this is a static pod placed under the `/etc/kubernetes/manifests` directory. When this file is updated, the ETCD pod is automatically re-created as this is a static pod placed under the `/etc/kubernetes/manifests` directory.
@ -75,4 +75,5 @@ When this file is updated, the ETCD pod is automatically re-created as this is a
> Note2: If the etcd pod is not getting `Ready 1/1`, then restart it by `kubectl delete pod -n kube-system etcd-controlplane` and wait 1 minute. > Note2: If the etcd pod is not getting `Ready 1/1`, then restart it by `kubectl delete pod -n kube-system etcd-controlplane` and wait 1 minute.
> Note3: This is the simplest way to make sure that ETCD uses the restored data after the ETCD pod is recreated. You **don't** have to change anything else. > Note3: This is the simplest way to make sure that ETCD uses the restored data after the ETCD pod is recreated. You **don't** have to change anything else.
**If** you change **--data-dir** to **/var/lib/etcd-from-backup** in the YAML file, make sure that the **volumeMounts** for **etcd-data** is updated as well, with the mountPath pointing to /var/lib/etcd-from-backup (THIS COMPLETE STEP IS OPTIONAL AND NEED NOT BE DONE FOR COMPLETING THE RESTORE) **If** you change **--data-dir** to **/var/lib/etcd-from-backup** in the YAML file, make sure that the **volumeMounts** for **etcd-data** is updated as well, with the mountPath pointing to /var/lib/etcd-from-backup (THIS COMPLETE STEP IS OPTIONAL AND NEED NOT BE DONE FOR COMPLETING THE RESTORE)