Ceph » mgr » Dashboard

Description of problem¶

here

The metrics data was not shown with "multiple matches for labels grouping labels must ensure unique matches" messages on Grafana dashboard after active mgr failover.

This is a screenshot(*1) of "ceph_pool_rd_bytes" data before failove the active mgr. The only one instance(10.74.214.226 - Active mgr then) is shown.
(*1) please see 2024-02-07 14-47-25_before_failover_the_mgr.png

But after active mgr failover, 2 instances (10.74.214.226 and mons-2.cephtest61.lab.psi.pnq2.redhat.com - Current Active mgr) are shown(*2)
(*2) please see 2024-02-07 14-47-32_after_failover_the_mgr.png

It seems there are 2 instances with same metrics collected by ceph-mgr after mgr failover
(one is the metrics collected by previous active mgr, Another is the metrics currently collecting by current active mgr)
Grafana tried to display it, but It failed with "multiple matches for labels grouping labels must ensure unique matches" message.