How to monitor your server with CloudWatch – 100 days of Cloud: Day 11

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DAY 11 – Hybrid Cloud- AWS LogAgent for CloudWachLogs

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CloudWatch Logs agent – Helps to send Logs automatically flow from the instance to the log stream. The agent confirms that it has started and it stays running until you disable it.

IAM User – Programmatic access

Create a IAM user with programmatic access to CloudWatch. Make sure you give least privilege. We need access to deliver logs, create a log group & create log stream. Use the Policy shown below. Note down the AWS Programmatic access Key . Consider adding as IAM Role if its an EC2.

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

Installing AWS Log Agent

SSH into your System , use PuTTY
once you log in update OS, here for demo purpose am using a server which is Debian based.

sudo apt-get update -y

Install python if your server does not have Python.

sudo apt-get install python

Download log Agent

curl https://s3.amazonaws.com/aws-cloudwatch/downloads/latest/awslogs-agent-setup.py -O

Install agent , make sure you add your ec2 region

sudo python ./awslogs-agent-setup.py --region ap-southeast-2

Once installation Start, it will prompt you to enter AWS CLI access

Configuring the CloudWatch Logs Agent

Verify Logs

Goto Cloud watch dashboard from your console Click on to Log groups.
You will be able to your log group, here for instance we named it as Ec2-Log-Group.Click on name.
if you scroll down you will be able to see the log stream with your AMI ID. Click to view the Logs.