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# Restore Your System

Restore Nodes in a NAS Cluster

When you need to restore the Appliance Controller configuration in a clustered NAS environment, you will need to synchronize the sync data to all nodes in the NAS cluster, and then recreate the NAS cluster. However, you can only run the "system restore" command on the master node, and only if it's first removed from the NAS cluster before attempting using the system `restore command` on the master node.

1. Log in to the Appliance Controller CLI.
2. Enter:

nascluster show

3. Record current NAS cluster settings.
4. Delete the NAS cluster. See Delete a NAS Cluster (return to non-clustered state).
5. Perform a "system restore" on the master node. At the prompt, enter:

system restore

Example

> system restore

Are you sure you want to restore the configuration from backup (Yes/no)? Yes

Restore of configuration in-progress ...

Restore of configuration successful

Restarting services ...

Stopping all services . . .

keepalived

haproxy

winbind

smbd

ctdb

console

appliance_controller

Starting all services . . .

appliance_controller

console

ctdb

smbd

winbind

haproxy

keepalived

6. Recreate the NAS cluster (using the settings recorded earlier in step 3). See Task 1: Create a NAS Cluster.

Perform a System Restore without NAS Clusters Enabled (single server node)

If you need to restore the Appliance Controller's configuration file from a previous backup, run the`system restore` command. The most recent configuration file will be in the /var directory. However, if you do not want to restore from the most recent configuration file, make sure that the file from which to restore system configuration is in the /var directory.

1. Log in to the Appliance Controller CLI.
2. Enter:

`system restore`

Example

> system restore

Are you sure you want to restore the configuration from backup (Yes/no)? Yes

Restore of configuration in-progress ...

Restore of configuration successful

Restarting services ...

Stopping all services . . .

keepalived

haproxy

winbind

smbd

ctdb

console

appliance_controller

Starting all services . . .

appliance_controller

console

ctdb

smbd

winbind

haproxy

keepalived

6-68456-07_RevA | Initial publication date: Friday, December 22, 2017 | Last updated on Monday, January 12, 2026.

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