Sorry to resurrect this thread, but while I was able to get the cluster healthy
again by manually creating the osd, I'm still unable to manage osds using the
orchestrator.
The orchestrator is generally working, but It appears to be unable to scan
devices. Immediately after failing out the mgr `ceph orch device ls` will
display device status from >4 weeks ago, which was when we converted the
cluster to be managed by cephadm. Eventually the orchestrator will attempt to
refresh its device status. At this point `ceph orch device ls` stops displaying
any output at all. I can reproduce this state almost immediately if I run `ceph
orch device ls —refresh` to force an immediate refresh. The mgr log shows
events like the following just before `ceph orch device ls` stops reporting
output (one event for every osd node in the cluster):
"Detected new or changed devices on ceph-osd31”
Here are the osd services in play:
# ceph orch ls osd
NAME PORTS RUNNING REFRESHED AGE PLACEMENT
osd 95 8m ago - <unmanaged>
osd.ceph-osd31 4 8m ago 6d ceph-osd31
# ceph orch ls osd --export
service_type: osd
service_name: osd
unmanaged: true
spec:
filter_logic: AND
objectstore: bluestore
---
service_type: osd
service_id: ceph-osd31
service_name: osd.ceph-osd31
placement:
hosts:
- ceph-osd31
spec:
data_devices:
rotational: 0
size: '3TB:'
encrypted: true
filter_logic: AND
objectstore: bluestore
I tried deleting the default “osd” service in case it was somehow conflicting
with my per-node spec, but it looks like that’s not allowed, so I assume any
custom osd service specs override the unmanaged default.
# ceph orch rm osd
Invalid service 'osd'. Use 'ceph orch ls' to list available services.
My hunch is that some persistent state is corrupted, or there’s something else
preventing the orchestrator from successfully refreshing its device status, but
I don’t know how to troubleshoot this. Any ideas?
Cheers,
/rjg
P.S. @Eugen: When I first started this thread you said it was unnecessary to
destroy an osd to convert it from unmanaged to managed. Can you explain how
this is done? Although we want to recreate the osds to enable encryption, it
would save time, and unnecessary wear on the SSDs, while troubleshooting.
On Oct 16, 2024, at 2:45 PM, Eugen Block <ebl...@nde.ag> wrote:
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Glad to hear it worked out for you!
Zitat von Bob Gibson <r...@oicr.on.ca>:
I’ve been away on vacation and just got back to this. I’m happy to
report that manually recreating the OSD with ceph-volume and then
adopting it with cephadm fixed the problem.
Thanks again for your help Eugen!
Cheers,
/rjg
On Sep 29, 2024, at 10:40 AM, Eugen Block <ebl...@nde.ag> wrote:
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Okay, apparently this is not what I was facing. I see two other
options right now. The first would be to purge osd.88 from the crush
tree entirely.
The second approach would be to create an osd manually with
ceph-volume, not cephadm ceph-volume, to create a legacy osd (you'd
get warnings about a stray daemon). If that works, adopt the osd with
cephadm.
I don't have a better idea right now.
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