Nubus for Kubernetes - Operation Manual 1.0.1

Restore

7.4. Restore#

This section describes how to restore Nubus for Kubernetes from a backup and how to get detailed information about it.

7.4.1. Restore a backup#

This section describes how to restore Nubus to the same namespace where Velero created the backup from. This type of restore requires a fresh, clean, and empty namespace.

Important

Velero supports restoring a backup to a different namespace. However, such a restore is only partially complete, because it doesn’t overwrite Nubus’s existing Order or ConfigMap Kubernetes objects, such as certificates.

Describing a restore to a different namespace is beyond the scope of this document.

  1. Finding the backup for restore and the namespace

    To find the backup to restore and the namespace to delete, follow the commands listed in Information about a backup to list all backups and to view the details of a specific backup. You find the name of the namespace in the details in the Namespaces.included section of the output.

  2. Deleting the Kubernetes namespace used for the backup

    To delete the namespace, use the commands in Listing 7.9.

    Listing 7.9 Delete the Kubernetes namespace with your Nubus deployment#
    $ export NAMESPACE_FOR_NUBUS="your namespace including Nubus"
$ kubectl delete namespace "$NAMESPACE_FOR_NUBUS"

    Danger

    Deleting the namespace terminates all pods running Nubus and your Nubus deployment ceases to exist. You can’t stop or revert this action.

  3. Defining the settings for restore

    To define the namespace where Velero runs and which backup to restore, initialize the environment variables in Listing 7.10.

    Listing 7.10 Define settings for restore#
    $ export BACKUP_NAME="Name your backup to restore"
$ export NAMESPACE_FOR_VELERO="your namespace for Velero"

  4. Restore a backup

    To create a restore and tell Velero to restore your backup of Nubus to the same namespace as before, run the command in Listing 7.11.

    Listing 7.11 Create the restore#
    $ velero restore create \
   --namespace "$NAMESPACE_FOR_VELERO" \
   --from-backup "$BACKUP_NAME"

    Velero begins the restore process. You can see activity in the logs of the Velero pod and appending data when you request Information about a restore.

See also

Velero Docs - Restore Reference

for a reference of the restore command and information about the restore order.

7.4.2. Information about a restore#

After you have created a restore, you can retrieve various information about it, as shown in this section. To set the environment variables used, see Listing 7.10.

  • To list all restores that Velero created so far, run the command in Listing 7.12.

    Listing 7.12 List all restores from a Velero configuration and its storage provider#
    $ velero restore get --namespace "$NAMESPACE_FOR_VELERO"

  • To view the details of a particular restore, run the command in Listing 7.13.

    For $RESTORE_NAME, use the name from the listing of restores in Listing 7.12.

    Listing 7.13 Describe a restore#
    $ velero restore describe "$RESTORE_NAME" --namespace "$NAMESPACE_FOR_VELERO"

  • For a detailed listing with all restore item operations, and resources, use the command in Listing 7.14.

    For $RESTORE_NAME, use the name from the listing of restores in Listing 7.12.

    Listing 7.14 Show details of a restore#
    $ velero restore describe "$RESTORE_NAME" \
    --namespace "$NAMESPACE_FOR_VELERO" \
    --details
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