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Hi @CaseyBodley,

Provided that from C++ side it comes in the format:

{'data-sync-from-zone2-zg1-realm1.fetch_bytes': {'description': 'Number of object bytes replicated', 'type': 6, 'priority': 5, 'units': 1, 'value': 0, 'count': 0}

Is it possible that the metric has the name format: {'rgw-sync-from-zone.fetch_bytes':
and with a "labels" field with label added: zone = "zone2-zg1-realm1" (example) ?

Alfonso Martínez wrote:

2) The metric name format should be fixed (i.e. it should not contain any particular detail: zone, zonegroup, realm, ...).
It should be:
[...]

note that the zone name in "data-sync-from-<zone>" is not the same as the zone that radosgw is running in, it's the source zone that it's replicating from. a radosgw in zoneA may be replicating from several other zones, and needs to track 'data-sync-from-zoneB' separately from 'data-sync-from-zoneC', etc.

Alfonso Martínez wrote:

Hi @CaseyBodley,

Provided that from C++ side it comes in the format:
[...]

Is it possible that the metric has the name format: {'rgw-sync-from-zone.fetch_bytes':
and with a "labels" field with label added: zone = "zone2-zg1-realm1" (example) ?

the name format from radosgw's perspective is "data-sync-from-<source zone>"

Casey Bodley wrote:

Alfonso Martínez wrote:

Hi @CaseyBodley,

Provided that from C++ side it comes in the format:
[...]

Is it possible that the metric has the name format: {'rgw-sync-from-zone.fetch_bytes':
and with a "labels" field with label added: zone = "zone2-zg1-realm1" (example) ?

the name format from radosgw's perspective is "data-sync-from-<source zone>"

OK, the important thing here is to provide a fixed metric name.

note that the zone name in "data-sync-from-<zone>" is not the same as the zone that radosgw is running in, it's the source zone that it's replicating from.

I know, the proposal is to put the source zone name in a label and keep the metric name fixed, so prometheus server receives sth like:

ceph_data_sync_from_zone_fetch_bytes_count{ceph_daemon="rgw.8000",instance="ceph-rpm:9283",job="ceph",zone="<ZONE_REPLICATING_FROM>"}

Alfonso Martínez wrote:

Casey Bodley wrote:

Alfonso Martínez wrote:

Hi @CaseyBodley,

Provided that from C++ side it comes in the format:
[...]

Is it possible that the metric has the name format: {'rgw-sync-from-zone.fetch_bytes':
and with a "labels" field with label added: zone = "zone2-zg1-realm1" (example) ?

the name format from radosgw's perspective is "data-sync-from-<source zone>"

OK, the important thing here is to provide a fixed metric name.

note that the zone name in "data-sync-from-<zone>" is not the same as the zone that radosgw is running in, it's the source zone that it's replicating from.

I know, the proposal is to put the source zone name in a label and keep the metric name fixed, so prometheus server receives sth like:
[...]

okay, gotcha. labels aren't part of ceph's PerfCounters api, so radosgw can't send it that way. i assume that ceph-mgr is adding those other labels somewhere down the line, and it should be able to transform the "data-sync-from-<zone>" names into the format you're expecting for prometheus