monitoring: restore lost `pool full` alert

Fixes: https://tracker.ceph.com/issues/44366
Signed-off-by: Patrick Seidensal <pseidensal@suse.com>

diff --git a/monitoring/prometheus/alerts/ceph_default_alerts.yml b/monitoring/prometheus/alerts/ceph_default_alerts.yml
index 3f58aeeaeba1fa036a877d42cedbbaceaf176820..a9b0560d4730b8ff9736d110c9377f39e25f44ec 100644 (file)
--- a/monitoring/prometheus/alerts/ceph_default_alerts.yml
+++ b/monitoring/prometheus/alerts/ceph_default_alerts.yml
@@ -222,7 +222,7 @@ groups:
     rules:
       - alert: pool full
         expr: |
-          ceph_pool_stored / ceph_pool_max_avail
+          ceph_pool_stored / (ceph_pool_stored + ceph_pool_max_avail)
           * on(pool_id) group_right ceph_pool_metadata * 100 > 90
         labels:
           severity: critical