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
