AWS Lambda Start Server

AWS Lambda function that will start servers that have a tag with the key LaunchGroup and the value the name of the lambda function.

Usage

Download the zip file and deploy it as a lambda function.

After you deployed the lambda function, you navigate to Event sources and choose for the Scheduled Event. After naming your event, you can provide the following schedule expression.

cron(45 7 ? * MON-FRI *)

This expression wil launch the servers every weekday, from monday to friday, at 7:45 AM.

Tags

Tagging your instance is very important in order for the lambda function to work properly. The lambda function will retrieve all the instances that have a tag with a key LaunchGroup, and a value being the name of the lambda function you provided.

For instance, if you named your lambda function OfficeHoursLauncher, make sure you add a tag with key-value LaunchGroup=OfficeHoursLauncher to all the instances you want to launch at the provided schedule.

IAM Roles

Make sure your lambda function is able to describe and start instances.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "MyStatementId",
            "Effect": "Allow",
            "Action": [
                "ec2:DescribeInstances",
                "ec2:StartInstances"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}

Related

• aws-lambda-stop-server - The same function but for stopping the server.

License

MIT © Sam Verschueren