Ok case close, I found the solution : 1- Connect on the active mgr 2- Show config #ceph daemon mgr.`hostname -s` config show | grep mon_pg_warn_max_object_skew "mon_pg_warn_max_object_skew": "10.000000", 3- Change the value #ceph config set mgr.`hostname -s` mon_pg_warn_max_object_skew 20 4- Confirm the change #ceph daemon mgr.`hostname -s` config show | grep mon_pg_warn_max_object_skew "mon_pg_warn_max_object_skew": "20.000000", 5- Result #ceph health detail HEALTH_OK Sylvain -----Message d'origine----- De : St-Germain, Sylvain (SSC/SPC) Envoyé : 23 janvier 2020 07:55 À : 'ceph-users@ceph.io' <ceph-users@ceph.io> Objet : Problem : "1 pools have many more objects per pg than average" ///////////////////////// Problem /////////////////////////// I've got a Warning on my cluster that I cannot remove : "1 pools have many more objects per pg than average" Does somebody has some insight ? I think it's normal to have this warning because I have just one pool in use, but how can I remove this warning ? Thx ! ///////////////////////// INFORMATION /////////////////////////// *** Here's some information about the cluster # 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 default.rgw.buckets.data objects per pg (50567) is more than 14.1249 times cluster average (3580) # sudo ceph-conf -D | grep mon_pg_warn_max_object_skew mon_pg_warn_max_object_skew = 10.000000 # ceph daemon mon.dao-wkr-04 config show | grep mon_pg_warn_max_object_skew "mon_pg_warn_max_object_skew": "10.000000" # ceph -v ceph version 14.2.4 (75f4de193b3ea58512f204623e6c5a16e6c1e1ba) nautilus (stable) # ceph df RAW STORAGE: CLASS SIZE AVAIL USED RAW USED %RAW USED hdd 873 TiB 823 TiB 50 TiB 51 TiB 5.80 TOTAL 873 TiB 823 TiB 50 TiB 51 TiB 5.80 POOLS: POOL ID STORED OBJECTS USED %USED MAX AVAIL .rgw.root 11 3.5 KiB 8 1.5 MiB 0 249 TiB default.rgw.control 12 0 B 8 0 B 0 249 TiB default.rgw.meta 13 52 KiB 186 34 MiB 0 249 TiB default.rgw.log 14 0 B 207 0 B 0 249 TiB default.rgw.buckets.index 15 1.2 GiB 131 1.2 GiB 0 249 TiB cephfs_data 29 915 MiB 202 1.5 GiB 0 467 TiB cephfs_metadata 30 145 KiB 23 2.1 MiB 0 249 TiB default.rgw.buckets.data 31 30 TiB 12.95M 50 TiB 6.32 467 TiB # ceph osd dump | grep default.rgw.buckets.data pool 31 'default.rgw.buckets.data' erasure size 8 min_size 6 crush_rule 2 object_hash rjenkins pg_num 256 pgp_num 256 autoscale_mode on last_change 9502 lfor 0/2191/7577 flags hashpspool stripe_width 20480 target_size_ratio 0.4 application rgw /////////////////////////// SOLUTION TRIED /////////////////////////// 1- I try to increase the value of mon_pg_warn_max_object_skew parameter #sudo ceph tell mon.* injectargs '--mon_pg_warn_max_object_skew 20' #sudo ceph tell osd.* injectargs '--mon_pg_warn_max_object_skew 20' + And reboot the monitor The parameter didn't change.