AWS CloudWatch Agent Configuration Guide

• Refer to AWS official documentation: Collecting Metrics, Logs, and Traces Using the CloudWatch Agent - Amazon CloudWatch

How CloudXper Collects Memory Metrics

• AWS does not provide memory-related metrics as default metrics.

• You must install CloudWatch on EC2 to view Memory metrics.

• When CloudXper receives the Memory metrics, Based on InstanceIdIt can only be received as (Dimension = InstanceId).

• Metrics to collect

  • Linux: “mem_used_percent”

  • Window: “Memory % Committed Bytes In Use”

Setup Guide

• CloudWatch Agent Config settings required

1. Modify the Config Default file (the path may vary depending on your OS, so check it)
   Modify the /opt/aws/amazon-cloudwatch-agent/amazon-cloudwatch-agent.d/default file (sudo permission required)
   
   

   1. Linux

      1. If you need to view data by combination of InstanceId, ImageId, InstanceType, and AutoscalingGroupName, modify as follows:

         { "agent": { "run_as_user": "cwagent" }, "metrics": { "metrics_collected": { "mem": { "measurement": [ "mem_used_percent" ] }, "disk": { "measurement": [ "used_percent" ], "resources": [ "*" ] } }, "append_dimensions": { "ImageId": "${aws:ImageId}", "InstanceId": "${aws:InstanceId}", "InstanceType": "${aws:InstanceType}", "AutoScalingGroupName": "${aws:AutoScalingGroupName}" }, "aggregation_dimensions": [ [ "InstanceId" ], [ "InstanceId", "ImageId", "InstanceType", "AutoScalingGroupName" ] ] } }

          

      2. If you only want to view data in CloudXper, modify it as follows:

         {     "agent": {         "run_as_user": "cwagent"     },     "metrics": {         "metrics_collected": {             "mem": {                 "measurement": [                     "mem_used_percent"                 ]             },             "disk": {                 "measurement": [                     "used_percent"                 ],                 "resources": [                     "*"                 ]             }         },         "append_dimensions": {             "InstanceId": "${aws:InstanceId}"         }     } }

          

   2. Window

      1. To-BE Write
         
         

2. Stop the CloudWatch agent

   1. sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a stop
      
      

3. Starting the CloudWatch agent

   1. sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a start
      
      

4. Check CloudWatch agent status

   1. sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a status

   2. If it appears as below, it is normal

   {     "status": "running",     "starttime": "시작시간",     "configstatus": "configured",     "cwoc_status": "stopped",     "cwoc_starttime": "",     "cwoc_configstatus": "not configured",     "version": "1.247347.3b250378" }

    

5. Confirm actual collection

   1. If it exists in the CWAgent Namespace, it is normal.

      Open

      

   2. If you see a part that is only searched by InstanceId, it is normal.

      Open

      

   3. If you see Memory Data, it's normal

      Open