Alert user if ceph metadata server is consuming cpu at threshold point.

Signed-off-by: Manish <[email protected]>
red-hat-storage · Dec 11, 2023 · 1e4e334 · 1e4e334
1 parent c707654
commit 1e4e334
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diff --git a/metrics/deploy/prometheus-ocs-rules.yaml b/metrics/deploy/prometheus-ocs-rules.yaml
@@ -286,3 +286,16 @@ spec:
       for: 15m
       labels:
         severity: warning
+    - alert: MDSCPUUsageHigh
+      annotations:
+        description: |-
+          Ceph metadata server pod ({{ $labels.pod }}) has high cpu usage.
+          Please consider increasing the number of active metadata servers,
+          it can be done by increasing the number of activeMetadataServers parameter in the StorageCluster CR.
+        message: Ceph metadata server pod ({{ $labels.pod }}) has high cpu usage
+        severity_level: warning
+      expr: |
+        pod:container_cpu_usage:sum{pod=~"rook-ceph-mds.*"}/ on(pod) kube_pod_resource_limit{resource='cpu',pod=~"rook-ceph-mds.*"} > 0.67
+      for: 6h
+      labels:
+        severity: warning
diff --git a/metrics/mixin/alerts/perf.libsonnet b/metrics/mixin/alerts/perf.libsonnet
@@ -34,6 +34,22 @@
               severity_level: 'warning',
             },
           },
+
+          {
+            alert: 'MDSCPUUsageHigh',
+            expr: |||
+              pod:container_cpu_usage:sum{%(mdsSelector)s}/ on(pod) kube_pod_resource_limit{resource='cpu',%(mdsSelector)s} > 0.67
+            ||| % $._config,
+            'for': $._config.mds_cpu_usage_high_threshold_duration,
+            labels: {
+              severity: 'warning',
+            },
+            annotations: {
+              message: 'Ceph metadata server pod ({{ $labels.pod }}) has high cpu usage',
+              description: 'Ceph metadata server pod ({{ $labels.pod }}) has high cpu usage.\nPlease consider increasing the number of active metadata servers,\nit can be done by increasing the number of activeMetadataServers parameter in the StorageCluster CR.',
+              severity_level: 'warning',
+            },
+          },
         ],
       },
     ],

diff --git a/metrics/mixin/config.libsonnet b/metrics/mixin/config.libsonnet
@@ -16,6 +16,8 @@
     ocsStorageClusterKMSConnectionAlert: '5s',
     mdsCacheUsageAlertTime: '5m',
     osdCPULoadHighAlertTime: '15m',
+    mdsSelector: 'pod=~"rook-ceph-mds.*"',
+    mds_cpu_usage_high_threshold_duration: '6h',
 
     // Constants
     objectStorageType: 'RGW',