FYI, this is the ceph-exporter we're using at the moment:
https://github.com/digitalocean/ceph_exporter
It's not as good, but it does the job mostly. Some more specific metrics
are missing, but the majority is there.
On 10/12/2020 19:01, Janek Bevendorff wrote:
Do you have the prometheus module enabled? Turn that off, it's causing
issues. I replaced it with another ceph exporter from Github and
almost forgot about it.
Here's the relevant issue report:
https://tracker.ceph.com/issues/39264#change-179946
On 10/12/2020 16:43, Welby McRoberts wrote:
Hi Folks
We've noticed that in a cluster of 21 nodes (5 mgrs&mons & 504 OSDs
with 24
per node) that the mgr's are, after a non specific period of time,
dropping
out of the cluster. The logs only show the following:
debug 2020-12-10T02:02:50.409+0000 7f1005840700 0
log_channel(cluster) log
[DBG] : pgmap v14163: 4129 pgs: 4129 active+clean; 10 GiB data, 31 TiB
used, 6.3 PiB / 6.3 PiB avail
debug 2020-12-10T03:20:59.223+0000 7f10624eb700 -1 monclient:
_check_auth_rotating possible clock skew, rotating keys expired way too
early (before 2020-12-10T02:20:59.226159+0000)
debug 2020-12-10T03:21:00.223+0000 7f10624eb700 -1 monclient:
_check_auth_rotating possible clock skew, rotating keys expired way too
early (before 2020-12-10T02:21:00.226310+0000)
The _check_auth_rotating repeats approximately every second. The
instances
are all syncing their time with NTP and have no issues on that front. A
restart of the mgr fixes the issue.
It appears that this may be related to
https://tracker.ceph.com/issues/39264.
The suggestion seems to be to disable prometheus metrics, however, this
obviously isn't realistic for a production environment where metrics are
critical for operations.
Please let us know what additional information we can provide to
assist in
resolving this critical issue.
Cheers
Welby
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