Monitor EC2 Memory and Disk Utilisation using CloudWatch

 

          EC2 Memory Disk Monitoring

Steps:


Step 1: Create an AWS EC2 IAM Role and add CloudWatch and SSM Full Access. - Role Name: EC2-CloudWatch-Role.
Step 2: Create a Parameter in Systems Manger with the name "/alarm/AWS-CWAgentLinConfig" and store the value.
Step 3: Create an EC2 Instance, Attach the role created in Step 1 and Add the commands in the Userdata Section.


Commands that needs to be added in Userdata Section:

#!/bin/bash

wget https://s3.amazonaws.com/amazoncloudwatch-agent/linux/amd64/latest/AmazonCloudWatchAgent.zip

unzip AmazonCloudWatchAgent.zip

sudo ./install.sh

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -c ssm:/alarm/AWS-CWAgentLinConfig -s

Check if EC2 Instance has CWAgent Installed or not:

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

Value for the SSM Parameter (/alarm/AWS-CWAgentLinConfig):



{
"metrics": {
"append_dimensions": {
"InstanceId": "${aws:InstanceId}"
},
"metrics_collected": {
"mem": {
"measurement": [
"mem_used_percent"
],
"metrics_collection_interval": 60
},
            "disk": {
"measurement": [
                     "disk_used_percent"
],
"metrics_collection_interval": 60
}
}
}
}


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