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added prereq stating to copy etcd snapshot to all your etcd nodes

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Mark Bishop
2018-07-05 16:57:35 -07:00
committed by Mark Bishop
parent 3d1172cec2
commit 1c6e7e3c05
3 changed files with 8 additions and 4 deletions
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content/rancher/v2.x/en/backups/restorations/ha-restoration/_index.md
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---
title: Restoring Backups—High Availablity Installs
title: Restoring Backups—High Availability Installs
weight: 370
aliases:
- /rancher/v2.x/en/installation/after-installation/ha-backup-and-restoration/
---
This procedure describes how to restore your a snapshot of `etcd` if you lose your Rancher data in a disaster scenario.
This procedure describes how to restore your a snapshot of `etcd` if you lose your Rancher data in a disaster scenario.
## Restoration Outline
@@ -56,9 +56,9 @@ docker ps | grep calico | cut -f 1 -d " " | xargs docker restart
To restore the most recent `etcd` snapshot on your new node, run RKE the command `rke etcd snapshot-restore`. This command reverts to any snapshot stored in `/opt/rke/etcd-snapshots` that you explicitly define. When you run `rke etcd snapshot-restore`, RKE removes the old `etcd` container if it still exists. To restore operations, RKE creates a new `etcd` cluster using the snapshot you choose.
>**Important:** When restoring the etcd database, you must restore each `etcd` to the _same_ snapshot, this means the exact same copy, so to restore you have to copy the snapshot from one of the nodes to the others before doing the `etcd snapshot-restore`.
>**Warning:** Restoring an `etcd` snapshot deletes your current `etcd` cluster and replaces it with a new one. Before you run the `rke etcd snapshot-restore` command, backup any important data in your current cluster.
>
>**Prerequisites:** {{< requirements_rollback >}}
1. From your workstation, open `rancher-cluster.yml` in your favorite text editor.
content/rancher/v2.x/en/backups/rollbacks/ha-server-rollbacks/_index.md
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>**Warning!**
>
> Rolling back to a previous version of Rancher destroys any changes made to Rancher following the upgrade. Unrecoverable data loss may occur.
>
>**Prerequisites:** {{< requirements_rollback >}}