Re: Cannot quiet "pools have many more objects per pg than average" warning

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I think the warning is triggered by the mgr daemon and not the mon,
try setting it there


Paul

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On Tue, Apr 16, 2019 at 8:18 PM Sergei Genchev <sgenchev@xxxxxxxxx> wrote:
>
>  Hi,
> I am getting a health warning about many more objects for PG than
> average. Seems to be common with RadosGW, where pools other than data
> contain very small number of objects.
>
> ceph@ola-s3-stg:/etc/ceph$ ceph health detail
> HEALTH_WARN 1 pools have many more objects per pg than average
> MANY_OBJECTS_PER_PG 1 pools have many more objects per pg than average
>     pool s3dev.rgw.buckets.data objects per pg (22675) is more than
> 84.2937 times cluster average (269)
>
> According to documentation, I should be able to quiet this warning by
> setting mon_pg_warn_max_object_skew.
> I did try to set  this settings to both 0 and 10000 (docs are unclear
> about 0 value), but I cannot make this warning disappear.
>
> ceph@ola-s3-stg:/etc/ceph$ ceph tell mon.* injectargs
> '--mon_pg_warn_max_object_skew 0'
> mon.olaxsa-cephmon00: injectargs:
> mon.olaxsa-cephmon01: injectargs:
> mon.olaxsa-cephmon02: injectargs:
> ceph@ola-s3-stg:/etc/ceph$ ceph health
> HEALTH_WARN 1 pools have many more objects per pg than average
> ceph@ola-s3-stg:/etc/ceph$ ceph tell mon.* injectargs
> '--mon_pg_warn_max_object_skew 100000'
> mon.olaxsa-cephmon00: injectargs:
> mon.olaxsa-cephmon01: injectargs:
> mon.olaxsa-cephmon02: injectargs:
> ceph@ola-s3-stg:/etc/ceph$ ceph health
> HEALTH_WARN 1 pools have many more objects per pg than average
>
> I have also tried to set  these values in cepf.conf and restart
> monitors, but warning is still there
> [global]
> .....
> mon pg warn max object skew = 10000
> mon pg warn max object skew = 0
>
> Where should I look next?
>
> Thank you!
>
> ceph version 13.2.4 (b10be4d44915a4d78a8e06aa31919e74927b142e) mimic (stable)
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