Ceph » mgr

The mgr/prometheus module does not provide any state info on the radosgw sync (multisite)

While there are the metrics with prefixes ceph_data_sync_ or ceph_rgw_ already available, those only cover the performance metrics of rgw and the sync metrics such as ceph_data_sync_from_zone_poll_errors.

The actual state of the sync between sites can only be seen via radosgw-admin:

radosgw-admin sync status
          realm ce992742-88e7-4613-990a-95dad46fd14a (myrealm)
      zonegroup fd9a77a5-f6c6-4144-82a1-307111569c04 (myzonegroup)
           zone 3084933d-a1bb-43ef-870e-8e8f14dab718 (myzone)
  metadata sync no sync (zone is master)
      data sync source: 6c39f3b7-8234-4d7b-89e5-15ba573ed033 (theotherzone)
                        syncing
                        full sync: 81/128 shards
                        full sync: 6 buckets to sync
                        incremental sync: 47/128 shards
                        data is behind on 81 shards
                        behind shards: [0,1,3,4,5,6,8,10,11,12,14,17,20,22,23,24,25,26,27,29,30,31,32,33,34,35,36,37,42,43,44,47,48,49,56,57,58,60,61,62,63,64,66,67,69,70,71,73,74,76,78,80,81,82,85,86,88,90,91,96,97,99,103,105,106,108,109,111,112,113,114,115,116,117,118,119,120,122,123,124,125]

radosgw-admin sync status
          realm ce992742-88e7-4613-990a-95dad46fd14a (myrealm)
      zonegroup fd9a77a5-f6c6-4144-82a1-307111569c04 (myzonegroup)
           zone 3084933d-a1bb-43ef-870e-8e8f14dab718 (myzone)
  metadata sync no sync (zone is master)
      data sync source: 6c39f3b7-8234-4d7b-89e5-15ba573ed033 (theotherzone)
                        syncing
                        full sync: 0/128 shards
                        incremental sync: 128/128 shards
                        data is caught up with source

I'd love to have metrics on general sync state ("caught up with source", "behind", ...) for metadata and data, but also about state of shards and numbers on buckets being synced.

This request is loosely related to https://tracker.ceph.com/issues/52638, but I believe the rgw sync state data is not even available via the mgr (yet).