Hi

Do I need to create any mon and/or mgr in the new ceph cluster?



Em seg., 18 de ago. de 2025 às 13:03, Eugen Block <ebl...@nde.ag> escreveu:

> Hi,
>
> this sounds like you created a new cluster (new fsid), the OSDs still
> have the previous fsid configured. I'd rather recommend to follow this
> procedure [0] to restore the mon store utilizing OSDs rather than
> trying to manipulate otherwise intact OSDs to fit into the "new"
> cluster. That way you'll have "your" cluster back. I don't know if
> there are any specifics to using proxmox, though. But the mentioned
> procedure seems to work just fine, I've read multiple reports on this
> list. Luckily, I haven't had to use it myself.
>
> Regards,
> Eugen
>
> [0]
>
> https://docs.ceph.com/en/latest/rados/troubleshooting/troubleshooting-mon/#recovery-using-osds
>
> Zitat von Gilberto Ferreira <gilberto.nune...@gmail.com>:
>
> > Hi
> >
> > I have 3 nodes Proxmox Cluster with CEPH, and after a crash, I have to
> > reinstall Proxmox from scratch, along with Ceph.
> > OSD are intact.
> > I already did ceph-volume lvm activate --all and the OSD appears with
> > ceph-volum lvm list and I got a folder with the name of the OSD under
> > /var/lib/ceph/osd.
> > However is not appear in ceph osd tree or ceph -s or even in the web gui.
> > Is there any way to re-add this OSD to Proxmox CEPH?
> >
> > Thanks a lot for any help.
> >
> >
> > Best Regards
> > ---
> > Gilbert
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>
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