monitoring: add alert NVMeoFMaxGatewayGroups

Add alert NVMeoFMaxGatewayGroups to prometheus_alerts.yml
and prometheus_alerts.libsonnet.

This alerts is to indicate if max number of NVMeoF gateway
groups have been reached in a cluster.

Signed-off-by: Vallari Agrawal <[email protected]>

Author: VallariAg

monitoring/ceph-mixin/prometheus_alerts.libsonnet

@@ -885,6 +885,16 @@
             description: 'You may create many gateways in a gateway group, but %(NVMeoFMaxGatewaysPerGroup)d is the tested limit' % $._config,
           },
         },
+        {
+          alert: 'NVMeoFMaxGatewayGroups',
+          'for': '1m',
+          expr: 'count(count by (group, cluster) (ceph_nvmeof_gateway_info)) by (cluster) > %.2f' % [$._config.NVMeoFMaxGatewayGroups],
+          labels: { severity: 'warning', type: 'ceph_default' },
+          annotations: {
+            summary: 'Max gateway groups exceeded%(cluster)s' % $.MultiClusterSummary(),
+            description: 'You may create many gateway groups, but %(NVMeoFMaxGatewayGroups)d is the tested limit' % $._config,
+          },
+        },
         {
           alert: 'NVMeoFSingleGatewayGroup',
           'for': '5m',

monitoring/ceph-mixin/prometheus_alerts.yml

@@ -792,6 +792,15 @@ groups:
         labels:
           severity: "warning"
           type: "ceph_default"
+      - alert: "NVMeoFMaxGatewayGroups"
+        annotations:
+          description: "You may create many gateway groups, but 4 is the tested limit"
+          summary: "Max gateway groups exceeded on cluster {{ $labels.cluster }}"
+        expr: "count(count by (group, cluster) (ceph_nvmeof_gateway_info)) by (cluster) > 4.00"
+        for: "1m"
+        labels:
+          severity: "warning"
+          type: "ceph_default"
       - alert: "NVMeoFSingleGatewayGroup"
         annotations:
           description: "Although a single member gateway group is valid, it should only be used for test purposes"