ceph-rbd-backup

Ceph RBD images replication / backup tool

This tool allows managing daily snapshots of RBD images on a Ceph cluster and replicating these snapshots to a backup cluster.

Invocation

Usage: ceph-rbd-backup.py ACTION [-h | --help] [--image IMAGE] [--debug]

-h or --help displays a standard usage screen.

If --image IMAGE is specified, only this particular image is used, instead of all the images found in the production Cluster or mounted on a server. This affects all three actions snapshot, replicate, and check.

--debug logs additional information, including all rbd command invocations and their output.

Actions

ceph-rbd-backup can perform several actions based on invocation.

snapshot

ceph-rbd-backup is designed to create snapshots of RBD images from the servers / instances where they are mapped and mounted. It takes care of freezing the filesystem before creating the snapshot. It is meant to be run automatically every day using cron. It creates a snapshot in the format YYYY-MM-DD.

replicate

This tool manages replication of the RBD image's snapshots from a production Ceph cluster to a backup cluster. This is meant to be run from a central server that has access to both Ceph clusters, and must be run after all daily snapshots have been created.

check

The check action verifies snapshots on the production cluster and replication on the backup cluster. It's output conforms to the Nagios plugin API and so can be called directly from a Nagios service check.

Credits

This script is inpired by this Bash script published by Rapide Internet:

https://www.rapide.nl/blog/item/ceph_-_rbd_replication.html

License

This script is publish under the GNU GPL v2 license (see the LICENSE file).