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Nagios plugin to check Ceph RBD snapshot-based mirroring health.
Current Version
1.0.0
Last Release Date
2025-12-17
Owner
juanfertor
Website
https://github.com/juan-ferrer-toribio/check-rbd-mirror
Download URL
https://raw.githubusercontent.com/juan-ferrer-toribio/check-rbd-mirror/refs/heads/main/check_rbd_mirror
License
GPL
Compatible With
The script connects to a Ceph cluster and inspects all pools with RBD mirroring enabled in IMAGE mode. For each mirrored image, it evaluates the mirror state (replaying or stopped) and, when stopped, parses peer status metadata to detect stale or desynchronized snapshots based on a configurable age cut-off. The plugin reports OK when all images are synchronized, or CRITICAL when unsynchronized, stale, or misconfigured images are detected.
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