Hi, Am 15.01.26 um 3:24 PM schrieb Burkhard Linke via ceph-users:

Nonetheless, since most clients are already running with dual stack (the k8s cluster will be the last and probably most "interesting" setup..), let's adopt the migration and target ipv6 only:

- set ms_bind_ipv4 to false and ms_bind_ipv6 to true

- delete and re-add mons one after another

- process the other components like OSDs etc.

As a cluster cannot run dual stack there is unfortunately no way to migrate from IPv4 to IPv6 online. You may be able to edit the MON DBs on all MONs manually when the cluster is completely offline and replace the MON IPs there. But I have no experience in doing this. Regards -- Robert Sander Linux Consultant Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin https://www.heinlein-support.de Tel: +49 30 405051 - 0 Fax: +49 30 405051 - 19 Amtsgericht Berlin-Charlottenburg - HRB 220009 B Geschäftsführer: Peer Heinlein - Sitz: Berlin