Velero backup fails with FailedValidation error

Solutions for Velero backup FailedValidation errors in Automation Suite on EKS/AKS.

When attempting to run a scheduled backup in Automation Suite on EKS/AKS, Velero may return the following error:

Phase: FailedValidation
Validation errors: an existing backup storage location was not specified at backup creation time and the server default default does not exist.
Error: BackupStorageLocation.velero.io "default" not found

This occurs due to the default-bs1 BackupStorageLocation not being marked as default in the Velero configuration.

To address the issue, take the following steps:

1. Verify the backup storage locations configured for Velero:

   kubectl get backupstoragelocations -n velero
   

   Confirm whether the DEFAULT column is empty.

2. Edit the backup storage location to set the default value:

   kubectl edit backupstoragelocation default-bs1 -n velero
   

3. Under the spec section, add the following line:

   default: true
   

4. Save the changes.

5. Restart the Velero pods to apply the configuration:

   kubectl delete pod -n velero --all
   

   Alternatively, perform a rolling restart:

   kubectl -n velero rollout restart deploy/velero
   

6. Verify the fix:

   kubectl get backupstoragelocations -n velero
   

   Confirm that the PHASE is Available and the DEFAULT column shows Yes.