[
   {
      "EvaluationPeriods":1,
      "ComparisonOperator":"GreaterThanThreshold",
      "AlarmActions":[
         "TODO: Add alarm actions! See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/AlarmThatSendsEmail.html"
      ],
      "Namespace":"{cluster_name}-ray-CWAgent",
      "AlarmDescription":"Memory used exceeds 90 percent for 5 minutes",
      "Period":300,
      "Threshold":90.0,
      "AlarmName":"high mem_used_percent_{instance_id}",
      "Dimensions":[
         {
            "Name":"InstanceId",
            "Value":"{instance_id}"
         }
      ],
      "Statistic":"Average",
      "InsufficientDataActions":[

      ],
      "OKActions":[

      ],
      "ActionsEnabled":true,
      "MetricName":"mem_used_percent"
   },
   {
      "EvaluationPeriods":1,
      "ComparisonOperator":"GreaterThanThreshold",
      "AlarmActions":[
         "TODO: Add alarm actions! See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/AlarmThatSendsEmail.html"
      ],
      "Namespace":"{cluster_name}-ray-CWAgent",
      "AlarmDescription":"Disk used exceeds 90 percent for five minutes",
      "Period":300,
      "Threshold":90.0,
      "AlarmName":"high disk_used_percent_{instance_id}",
      "Dimensions": [
            {
                "Name": "InstanceId",
                "Value": "{instance_id}"
            }
        ],
      "Statistic":"Average",
      "InsufficientDataActions":[

      ],
      "OKActions":[

      ],
      "ActionsEnabled":true,
      "MetricName":"disk_used_percent"
   },
   {
      "EvaluationPeriods":1,
      "ComparisonOperator":"GreaterThanThreshold",
      "AlarmActions":[
         "TODO: Add alarm actions! See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/AlarmThatSendsEmail.html"
      ],
      "Namespace":"AWS/EC2",
      "AlarmDescription":"CPU used exceeds 90 percent for 2 hours",
      "Period":7200,
      "Threshold":90.0,
      "AlarmName":"high_CPUUtilization_{instance_id}",
      "Dimensions":[
         {
            "Name":"InstanceId",
            "Value":"{instance_id}"
         }
      ],
      "Statistic":"Average",
      "InsufficientDataActions":[

      ],
      "OKActions":[

      ],
      "ActionsEnabled":true,
      "MetricName":"CPUUtilization"
   }
]