5XX & NoHealthy alarms are in AWS Console, but not codified in cloudf…

…ormation. Also changing the 5XX alarm to be ELB rather than backend to catch timeouts etc (unresponsive backend)
guardian · Feb 21, 2020 · 08ccc8d · 08ccc8d
1 parent 1426025
commit 08ccc8d
Showing 1 changed file with 41 additions and 0 deletions.
diff --git a/cloudformation/membership-attribute-service.yaml b/cloudformation/membership-attribute-service.yaml
@@ -411,6 +411,47 @@ Resources:
             Unit: Count
           ReturnData: false
 
+  NoHealthyInstancesAlarm:
+    Type: AWS::CloudWatch::Alarm
+    Condition: CreateProdMonitoring
+    Properties:
+      AlarmActions:
+        - !Sub 'arn:aws:sns:${AWS::Region}:${AWS::AccountId}:fulfilment-dev'
+      AlarmName: !Sub No healthy instances for members-data-api in ${Stage}
+      MetricName: HealthyHostCount
+      Namespace: AWS/ELB
+      Dimensions:
+          - Name: LoadBalancerName
+            Value: !Ref LoadBalancer
+      ComparisonOperator: LessThanOrEqualToThreshold
+      Threshold: 0.5
+      Period: 60
+      EvaluationPeriods: 10
+      Statistic: Average
+    DependsOn:
+      - LoadBalancer
+
+  High5XXRateAlarm:
+    Type: AWS::CloudWatch::Alarm
+    Condition: CreateProdMonitoring
+    Properties:
+      AlarmActions:
+        - !Sub 'arn:aws:sns:${AWS::Region}:${AWS::AccountId}:fulfilment-dev'
+      AlarmName: !Sub High 5XX rate for members-data-api in ${Stage}
+      MetricName: HTTPCode_Target_5XX_Count
+      Namespace: AWS/ELB
+      Dimensions:
+        - Name: LoadBalancerName
+          Value: !Ref LoadBalancer
+      ComparisonOperator: GreaterThanOrEqualToThreshold
+      Threshold: 10
+      Period: 60
+      EvaluationPeriods: 1
+      Statistic: Sum
+      TreatMissingData: notBreaching
+    DependsOn:
+      - LoadBalancer
+
 Outputs:
   LoadBalancerUrl:
     Value: