From b3f35aef9d8f22606556a5adef4f8af486f27c36 Mon Sep 17 00:00:00 2001 From: Eric Zhang Date: Tue, 3 Mar 2026 09:58:47 -0800 Subject: [PATCH] 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 --- doc/rados/operations/health-checks.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/doc/rados/operations/health-checks.rst b/doc/rados/operations/health-checks.rst index aece61714368..a0d652d90b10 100644 --- a/doc/rados/operations/health-checks.rst +++ b/doc/rados/operations/health-checks.rst @@ -199,6 +199,23 @@ To disable the grace period entirely (immediate reporting), set the value to 0: ceph config set mon mon_netsplit_grace_period 0 +MON_COLOCATED +____________ + +Two or more Monitors are located on the same node. This health check is +raised when multiple Monitors share the same IP address. This check is by +default disabled. + +Colocation of Monitors can increase the risk that a host, rack, or network +failure prevents the Monitors from forming a Paxos quorum, which may +stall cluster operations. + +To enable the :confval:`mon_warn_on_colocated_monitors` warning, run the following command: + +.. prompt:: bash # + + ceph config set mon mon_warn_on_colocated_monitors true + AUTH_INSECURE_GLOBAL_ID_RECLAIM _______________________________ -- 2.47.3