Ceph Migration from Nautilus to Reef: Incompatibility Issues

Frédérique

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Oct 24, 2025
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Ceph Migration from Nautilus to Reef: Incompatibility Issues

When migrating a cluster from Nautilus (v14) to Reef (v18), the cluster fails to mount the CephF and ceph file systems.

The main symptoms are:

CephX authentication failures between nodes (monitors, OSDs, MDS), generating permission denied and handle_auth_bad_method errors.

Incompatibilities in the monmap and keyring files, including a misconfigured min_mon_release, preventing proper communication between monitors and clients.

Absence of functional monitors, resulting in the inability to retrieve the cluster configuration and establish a valid authentication session.

OSDs and MDSs fail to retrieve the monitor configuration, causing service startup failures.

As a result, CephFS mount fails with errors such as "no mds server is up" and "mauth authentication failed: -13".


PLEASE PLEASE NEED SUPPORT
 
Je l'ai su après avoir migré malheureusement.
Du coup , j'ai plusieurs erreurs et j'ai espéré pouvoir trouver du support ici