Python Scripts : Start/Stop AWS EC2

Services → Lambda → Functions → Create function

Choose create custom rule → Give role name → Edit Policy document as below

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:PutLogEvents"
      ],
      "Resource": "arn:aws:logs:*:*:*"
    },
    {
      "Effect": "Allow",
      "Action": [
        "ec2:Start*",
        "ec2:Stop*"
      ],
      "Resource": "*"
    }
  ]
}

Click Allow → Give lambda function name ‘ec2start’ → Next

Put below code to the body of lambda function

import boto3
region = ''      ## region, eg: us-east-1
instances = [''] ##instance ids
def lambda_handler(event, context):
 ec2 = boto3.client('ec2', region_name=region)
 ec2.start_instances(InstanceIds=instances)
 print 'started your instances: ' + str(instances)

You can add triggers for this lambda function. It is available under

Designer → CloudWatch events → Create new rule

We can provide schedule expression here.

To Stop the instance we can create another lambda function. Please use following code.

import boto3
region = ''      ## region, eg: us-east-1
instances = [''] ##instance ids
def lambda_handler(event, context):
 ec2 = boto3.client('ec2', region_name=region)
 ec2.stop_instances(InstanceIds=instances)
 print 'stopped your instances: ' + str(instances)

Thats it, Enjoy!