CloudWatchAgents

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                AWS CloudWath Agent
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----*** Setting Up the Cloudwatch Agent ***----

>> Download the CloudWatch Agent

$ wget https://amazoncloudwatch-agent.s3.amazonaws.com/debian/amd64/latest/amazon-cloudwatch-agent.deb

$ sudo dpkg -i -E ./amazon-cloudwatch-agent.deb


----*** Create IAM Role ***----

- In policies ->  CloudWatchAgentServerPolicy

- Create Role

>>> Allowing the CloudWatch agent to set log retention policy

- Select the Created Role

- In the Permissions tab, choose Add permissions, Create inline policy

- Choose the JSON tab

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "logs:PutRetentionPolicy",
      "Resource": "*"
    }
  ]
}


>>> Allowing the CloudWatch agent to fetch logs 

- Select the Created Role

- In the Permissions tab, choose Add permissions, Create inline policy

- Choose the JSON tab

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "EnableCreationAndManagementOfCloudwatchLogEvents",
            "Effect": "Allow",
            "Action": [
                "logs:GetLogEvents",
                "logs:PutLogEvents"
            ],
            "Resource": "*"
        },
        {
            "Sid": "EnableCreationAndManagementOfCloudwatchLogGroupsAndStreams",
            "Effect": "Allow",
            "Action": [
                "logs:CreateLogStream",
                "logs:DescribeLogStreams",
                "logs:PutRetentionPolicy",
                "logs:CreateLogGroup"
            ],
            "Resource": "*"
        }
    ]
}



### Attach Role to Instance


----*** Create the CloudWatch agent configuration file ***----

$ sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard

CollectD - No
Advanced
Logs - /var/log/syslog
Xraytrace - No 
SSM Paremeter - No


Config file location - /opt/aws/amazon-cloudwatch-agent/bin/config.json


----*** Start the agent ***----

$ sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s -c file:<configuration-file-path>


>>> Check on CloudWatch Console 





##### Troubleshooting

 nano /opt/aws/amazon-cloudwatch-agent/logs/amazon-cloudwatch-agent.log
 -> Check log file path