Hi,
Yes, we drained the nodes. It needed two weeks to finish the
process, and yes, I think this is the root cause.
So we still have the nodes but when I try to restart one of those
OSDs it still cannot join:
if the nodes were drained successfully (can you confirm that all PGs
were active+clean after draining before you removed the nodes?) then
the disks on the removed nodes wouldn't have any data to bring back.
The question would be, why do the remaining OSDs still reference
removed OSDs. Or am I misunderstanding something? I think it would
help to know the whole story, can you provide more details? Also some
more general cluster info would be helpful:
$ ceph -s
$ ceph osd tree
$ ceph health detail
Zitat von Malte Stroem <malte.str...@gmail.com>:
Hello Eugen,
thank you. Yesterday I thought: Well, Eugen can help!
Yes, we drained the nodes. It needed two weeks to finish the
process, and yes, I think this is the root cause.
So we still have the nodes but when I try to restart one of those
OSDs it still cannot join:
Jun 21 09:46:03 ceph-node bash[2323668]: Running command:
/usr/bin/chown -h ceph:ceph /var/lib/ceph/osd/ceph-66/block
Jun 21 09:46:03 ceph-node bash[2323668]: Running command:
/usr/bin/chown -R ceph:ceph /dev/dm-19
Jun 21 09:46:03 ceph-node bash[2323668]: Running command:
/usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-66
Jun 21 09:46:03 ceph-node bash[2323668]: --> ceph-volume lvm
activate successful for osd ID: 66 Jun 21 09:51:04 ceph-node
bash[2323668]: debug 2023-06-21T07:51:04.176+0000 7fabef5a1200 0
monclient(hunting): authenticate timed out after 300
Jun 21 09:56:04 ceph-node bash[2323668]: debug
2023-06-21T07:56:04.179+0000 7fabef5a1200 0 monclient(hunting):
authenticate timed out after 300
Jun 21 10:01:04 ceph-node bash[2323668]: debug
2023-06-21T08:01:04.177+0000 7fabef5a1200 0 monclient(hunting):
authenticate timed out after 300
Jun 21 10:06:04 ceph-node bash[2323668]: debug
2023-06-21T08:06:04.179+0000 7fabef5a1200 0 monclient(hunting):
authenticate timed out after 300
Jun 21 10:11:04 ceph-node bash[2323668]: debug
2023-06-21T08:11:04.174+0000 7fabef5a1200 0 monclient(hunting):
authenticate timed out after 300
Same messages on all OSDs.
We still have some nodes running and did not restart those OSDs.
Best,
Malte
Am 21.06.23 um 09:50 schrieb Eugen Block:
Hi,
can you share more details what exactly you did? How did you remove
the nodes? Hopefully, you waited for the draining to finish? But if
the remaining OSDs wait for removed OSDs it sounds like the
draining was not finished.
Zitat von Malte Stroem <malte.str...@gmail.com>:
Hello,
we removed some nodes from our cluster. This worked without problems.
Now, lots of OSDs do not want to join the cluster anymore if we
reboot one of the still available nodes.
It always runs into timeouts:
--> ceph-volume lvm activate successful for osd ID: XX
monclient(hunting): authenticate timed out after 300
MONs and MGRs are running fine.
Network is working, netcat to the MONs' ports are open.
Setting a higher debug level has no effect even if we add it to
the ceph.conf file.
The PGs are pretty unhappy, e. g.:
7.143 87771 0 0 0 0
314744902235 0 0 10081 10081 down
2023-06-20T09:16:03.546158+0000 961275'1395646 961300:9605547
[209,NONE,NONE] 209 [209,NONE,NONE] 209 961231'1395512
2023-06-19T23:46:40.101791+0000 961231'1395512
2023-06-19T23:46:40.101791+0000
PG query wants us to set an OSD lost however I do not want to do this.
OSDs are blocked by OSDs from the removed nodes:
ceph osd blocked-by
osd num_blocked
152 38
244 41
144 54
...
We added the removed hosts again and tried to start the OSDs on
this node and they also failed into the timeout mentioned above.
This is a containerized cluster running version 16.2.10.
Replication is 3, some pools use an erasure coded profile.
Best regards,
Malte
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