Manual backing up and restoring central components

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1. Central components backup

Schedule backups during periods of lowest system load. We recommend running them at night to avoid failures and prevent any impact on users.

The platform administrator has the ability to create a backup of central components, which will be stored in a secure backup repository—MinIO.

Follow these steps to create a backup:

Log into the OpenShift of the respective cluster.
Copy the login command—click the Copy login command button under the user profile name.
After being redirected to the token display page, click the Display Token link.
Copy the access token to the OpenShift of the cluster into which the backup will be performed.

Open Git Bash, paste the copied token, and press Enter.

$ oc login --token=sha256~NyHYErh_JwJQаааааyIfmbbE-UY_Y3s_diQG422v9Rw --server=https://api.backup.mdtu-ddm.projects.epam.com:6443

To check for existing backups, execute the following command:
```
$ velero get backups
```

To create a new backup, execute the following command:

$ velero backup create control-plane-nexus-release1-4-backup-28-10 --include-namespaces control-plane-nexus --ttl 120h

where:

control-plane-nexus-release1-4-backup-28-10 — is the folder name in the backup repository where the backup will be stored (the cluster name and backup creation date are provided for convenience);
control-plane-nexus — is the name of the central component for which the backup will be performed;
--ttl 120h — is the backup retention time.

To verify if the backup has been successfully created, execute the following command:

$ velero backup get

backup restore central get

where:

Execute the following command to delete a backup from storage:

$ velero backup delete control-plane-nexus-release1-4-backup-28-10

where the control-plane-nexus-release1-4-backup-28-10 is the name of the backup to be deleted.

Before starting the process of restoring the central components, ensure that their backup has been created and these components have been removed.

Execute the following command to restore a central component for which the backup has been created:

$ velero restore control-plane-nexus --from-backup control-plane-nexus-backup-25-10

where:

control-plane-nexus — is the name of the central component to be restored;
backup control-plane-nexus-backup-25-10 — is the folder name in the backup repository where the backup is stored and from which the central component will be restored.