From: Eric Date: Tue, 24 Feb 2026 18:40:38 +0000 (-0800) Subject: doc/rados/operations/health-checks: Added MON_COLOCATED health warning X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fheads%2Fwip-mon-colocate;p=ceph-ci.git doc/rados/operations/health-checks: Added MON_COLOCATED health warning Update the Health Checks doc page with MON_COLOCATED warning Fixes: https://tracker.ceph.com/issues/74955 Signed-off-by: Eric Zhang --- diff --git a/doc/rados/operations/health-checks.rst b/doc/rados/operations/health-checks.rst index aece6171436..6f0bdc8a7e6 100644 --- a/doc/rados/operations/health-checks.rst +++ b/doc/rados/operations/health-checks.rst @@ -199,6 +199,21 @@ To disable the grace period entirely (immediate reporting), set the value to 0: ceph config set mon mon_netsplit_grace_period 0 +MON_COLOCATED +____________ + +One or more Monitors are located on the same node. This health check is +raised by the leader monitor when multiple Monitors share the same IP address (disabled by default). + +Co-locating Monitors can lead to a single failure taking out multiple Monitors, +which can cause "not enough mons to form a quorum" and stall IO. + +To enable this warning, run the following command: + +.. prompt:: bash # + + ceph config set mon mon_warn_on_colocated_monitors true + AUTH_INSECURE_GLOBAL_ID_RECLAIM _______________________________