Re: Ceph OSD perf metrics missing

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Hello Kilian,

I am not entirely sure this is the same issue, but I know Prometheus
doesn’t export some performance metrics by default anymore in Reef. This
can be worked around by setting:

ceph config set mgr mgr/prometheus/exclude_perf_counters false

A proper fix would be to switch to using a per-host ceph-exporter.

Best regards,
Pierre Riteau

On Mon, 25 Nov 2024 at 13:45, Kilian Ries <mail@xxxxxxxxxxxxxx> wrote:

> Prometheus metrics seem to be broken, too:
>
>
> ceph_osd_op_r_latency_sum
>
> ceph_osd_op_w_latency_sum
>
>
> Both of them for example are not reported by the ceph mgr metrics exporter:
>
>
> curl http://192.168.XXX.XXX:9283/metrics |grep ceph_osd_
>
>
>
> I get some merics like "ceph_osd_commit_latency_ms" or
> "ceph_osd_apply_latency_ms" but none of the "op_r / op_w" metrics. Do the
> lable names have switched and my grafana dashboard is outdated? Or are they
> missing at the exporter level?
>
>
> Thanks
>
>
>
>
> ________________________________
> Von: Kilian Ries
> Gesendet: Montag, 25. November 2024 13:37:16
> An: ceph-users@xxxxxxx
> Betreff: AW: Ceph OSD perf metrics missing
>
>
> Any ideas? Still facing the problem ...
>
> ________________________________
> Von: Kilian Ries
> Gesendet: Mittwoch, 23. Oktober 2024 13:59:06
> An: ceph-users@xxxxxxx
> Betreff: Ceph OSD perf metrics missing
>
>
> Hi,
>
>
> i'm running a Ceph v18.2.4 cluster. I'm trying to build some latency
> monitoring with the
>
>
> ceph daemon osd.4 perf dump
>
>
> cli command. On most of the OSDs i get all the metrics i need. On some
> OSDs i only get zero values:
>
>
> osd.op_latency.avgcount: 0
>
>
> I already tried restarting the OSD process which didn't help. I also tried
> to reset the metrics via
>
>
> ceph daemon osd.4 perf reset all
>
>
> but that didn't help either. How can that be that some OSDs don't show
> values here? How can i fix that?
>
>
> Thanks
>
> Regards,
>
> Kilian
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>
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