Hi Stefan, amazing. You're a genius. It worked. Everything back in order. Wonderful. These things are perhaps not so exciting for all of you Ceph experts but it's certainly *very* exciting for me to do stuff like this on a live system. *Phew, sweat*. So happy this is finally resolved and nobody noticed there was even a problem ;-) 1000 thanks!!! Ranjan Stefan Kooman schrieb am 20.04.2022 um 17:50: > On 4/20/22 17:36, Ranjan Ghosh wrote: >> Hi Stefan, >> >> thanks for the hint. Yes, the mon store is owned by user ceph. It's a >> normal folder under /var/lib/ceph/mon/... and there are various files >> in there - all with owner ceph:ceph. Looks normal to me (like on the >> other nodes). >> I've read the docs you provided and I wonder which of those steps are >> actually necessary because I obviously have many of those things >> already in place. >> I guess the most important part is step 15, right? >> >> ceph-mon --mkfs -i stage2 --monmap /tmp/monmap --keyring >> /tmp/ceph.mon.keyring >> >> So I would completely delete the /var/lib/ceph/mon/ceph-stage2 folder >> and recreate it as empty, because the files in there have probably >> become corrupted, correct? > > Yeah, that's what I suspect. > >> Then I would run the above command and it would initialize a new >> monitor automatically in that folder by default? I don't have to >> specify the exact path on the command-line - it is automatically >> determined by the -i argument, right? So, I only need the keyring >> and the monmap. How do I get the monmap? I tried to run: >> >> ceph-mon -i stage2 --extract-monmap /tmp/monmap >> >> And I get some binary stuff written to /tmp/monmap. Is that a decent >> monmap? >> Is there also a way to extract the keyring? There's a keyring file in >> /var/lib/ceph/mon/ceph-stage2. Can I just use that one? > > Here my notes from a re-install mon test I did. I susbstituted the > name with "stage2": > > chown -R ceph.ceph /var/lib/ceph/mon > sudo -u ceph ceph auth get mon. -o /tmp/keyring > exported keyring for mon. > sudo -u ceph ceph mon getmap -o /tmp/monmap.map > got monmap epoch 8 > chown -R ceph:ceph /var/lib/ceph/mon/ceph-stage2 > sudo -u ceph ceph-mon -i stage2 --mkfs --monmap /tmp/monmap.map > --keyring /tmp/keyring --setuser ceph --setgroup ceph > > systemctl enable ceph-mon@stage2.service > > If you have the mgr co-located on the monitor node, you need to make > sure you do below for the manager: > > mkdir /var/lib/ceph/mgr/ceph-stage2 > ceph auth get mgr.stage2 >> /var/lib/ceph/mgr/ceph-stage2/keyring > chown -R ceph.ceph /var/lib/ceph/mgr/ > > systemctl enable ceph-mgr@stage2.service > > After a reboot the mon and the mgr should come online. > > Gr. Stefan _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
 |