Backup and Recovery

PaaS Cloud supports backup and recovery for both virtual machines and managed applications using Cozystack’s backup infrastructure.

VM Backup and Recovery

BackupJobs

A BackupJob creates a point-in-time snapshot of a vm-disk or vm-instance and stores it in object storage (SeaweedFS/S3) or another configured target.

BackupPlans

A BackupPlan defines a schedule and retention policy for automated backups of VM resources. You can configure:

• Schedule — Cron expression for backup frequency.
• Retention — How many backup snapshots to keep.
• Target — Storage backend for backup data.

Manual Snapshot

Create a one-time snapshot of a vm-disk from the dashboard or via kubectl:

kubectl create -f - <<EOF
apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshot
metadata:
  name: my-vm-snapshot
spec:
  source:
    persistentVolumeClaimName: my-vm-system
EOF

Restoring a VM

To restore a VM from a backup:

1. Locate the backup snapshot in the dashboard or object storage.
2. Create a new vm-disk from the snapshot source.
3. Create a new vm-instance referencing the restored disk.

Application Backup and Recovery

Managed applications in the marketplace can be backed up using the same backup infrastructure:

• Application Backup Jobs — Snapshot application PVCs and configuration.
• Velero Integration — The platform may use Velero for cluster-wide backup and migration of application resources.

Velero Add-on

For tenant Kubernetes clusters, the Velero add-on provides:

• Scheduled backups of namespace resources and PVCs.
• Cross-cluster migration of applications.

Contact the cloud team to enable Velero backups for your tenant.

Best Practices

• Automate backups — Use BackupPlans with appropriate schedules for critical VMs and applications.
• Test restores — Periodically restore backups to verify integrity.
• Off-site copies — For disaster recovery, request that backups be replicated to a secondary location.
• Monitor backup jobs — Check the Monitoring dashboard for backup job status and alerts.