Add alarms for Nova aggregates

Change-Id: Ia82d5baf754d2d61c2bfa6d882ace3c8d094eafc
Depends-On: I6647600d73991bfbfc7b7c199a7f9b90b9294f68

deployment_scripts/puppet/modules/fuel_lma_collector/templates/alarming.yaml.erb

@@ -1169,7 +1169,7 @@ lma_collector:
       description: 'There is none memory available for new instances'
       severity: 'warning'
       enabled: 'true'
-      no_data_policy: skip  # the metric is only collected from the aggregator node
+      no_data_policy: skip # the metric is only collected from the aggregator node
       trigger:
         rules:
           - metric: openstack_nova_total_free_ram
@@ -1178,6 +1178,34 @@ lma_collector:
             window: 60
             periods: 0
             function: max
+    - name: 'nova-aggregates-free-memory-warning'
+      description: "The nova aggregates free memory percent is low"
+      severity: 'warning'
+      enabled: 'true'
+      no_data_policy: skip # the metric is only collected from the aggregator node
+      trigger:
+        rules:
+          - metric: openstack_nova_aggregate_free_ram_percent
+            group_by: [aggregate]
+            relational_operator: '<'
+            threshold: 10.0
+            window: 60
+            periods: 0
+            function: min
+    - name: 'nova-aggregates-free-memory-critical'
+      description: "The nova aggregates free memory percent is too low"
+      severity: 'critical'
+      enabled: 'true'
+      no_data_policy: skip # the metric is only collected from the aggregator node
+      trigger:
+        rules:
+          - metric: openstack_nova_aggregate_free_ram_percent
+            group_by: [aggregate]
+            relational_operator: '<'
+            threshold: 1.0
+            window: 60
+            periods: 0
+            function: min
 
     # Adds alarm on local check for OpenStack services endpoint
     - name: 'cinder-api-local-endpoint'
@@ -3576,6 +3604,11 @@ lma_collector:
         members:
             nova-free-memory:
                 alarms: ['total-nova-free-memory-warning']
+    nova-aggregates-free-memory:
+        alerting: enabled
+        members:
+            nova-aggregates-free-memory:
+                alarms: ['nova-aggregates-free-memory-critical', 'nova-aggregates-free-memory-warning']
     ceph-mon-cluster:
         apply_to_node: ceph-mon
         alerting: enabled

deployment_scripts/puppet/modules/fuel_lma_collector/templates/clusters.yaml.erb

@@ -634,6 +634,11 @@ lma_collector:
         group_by: member
         members:
           - nova-free-memory
+      nova-aggregates-free-memory:
+        policy: highest_severity
+        group_by: member
+        members:
+          - nova-aggregates-free-memory
 
   gse_cluster_node:
     input_message_types:
@@ -812,6 +817,7 @@ lma_collector:
           - libvirt-service
           - nova-free-vcpu
           - nova-free-memory
+          - nova-aggregates-free-memory
         hints:
           - neutron-data-plane
       cinder-control-plane:

doc/user/source/appendix_alarms.rst

@@ -1187,6 +1187,34 @@ The following is a list of StackLight built-in alarms::
             window: 60
             periods: 0
             function: max
+    - name: 'nova-aggregates-free-memory-warning'
+      description: "The nova aggregates free memory percent is low"
+      severity: 'warning'
+      enabled: 'true'
+      no_data_policy: skip # the metric is only collected from the aggregator node
+      trigger:
+        rules:
+          - metric: openstack_nova_aggregate_free_ram_percent
+            group_by: [aggregate]
+            relational_operator: '<'
+            threshold: 10.0
+            window: 60
+            periods: 0
+            function: min
+    - name: 'nova-aggregates-free-memory-critical'
+      description: "The nova aggregates free memory percent is too low"
+      severity: 'critical'
+      enabled: 'true'
+      no_data_policy: skip # the metric is only collected from the aggregator node
+      trigger:
+        rules:
+          - metric: openstack_nova_aggregate_free_ram_percent
+            group_by: [aggregate]
+            relational_operator: '<'
+            threshold: 1.0
+            window: 60
+            periods: 0
+            function: min
 
     # Adds alarm on local check for OpenStack services endpoint
     - name: 'cinder-api-local-endpoint'