Automated OpenStack VM Backup Synchronisation with Bacula Enterprise

What's Inside

This whitepaper is intended for infrastructure architects, backup administrators, and OpenStack operations teams evaluating or deploying the solution. It covers:

• The challenge — why traditional backup management fails at OpenStack scale, and the cost of incomplete coverage
• Solution overview — what bacula-openstack-sync does, its key design principles, and the reconciliation matrix (new VM, unchanged, returned, restored, disappeared, opted-out)
• Technical architecture — the three-step discover / read / reconcile cycle and the VM lifecycle state machine
• Configuration and integration — directory layout, environment variables, the clients.conf file, and per-VM policy via OpenStack metadata
• Generated Bacula configuration — job and FileSet naming rules, state tracking headers
• Enterprise Data Reduction — Global Endpoint Deduplication for OpenStack and deployment checklist
• Application-consistent backups — agentless quiesce via SSH, MySQL/MariaDB consistent snapshot lock, extending to other databases
• Deployment and operations — preflight checks, Director integration, cleaning up deleted VMs, decommissioning, and a troubleshooting reference
• Design philosophy and reliability guarantees