EC2 Start/Stop Scheduler

Starts/Stops EC2 instances based on their tags:

Scheduler:Start   H:7 M:00 DOW:01234
Scheduler:Stop    H:19 M:00 DOW:01234

Tags are parsed as:

• H - hour to start
• M - minute to start (not currently implemented)
• DOW - Days of Week to start (Monday is 0 and Sunday is 6)

Tags can be customised inside lambda_function.py. Also can be restricted to a set FILTER for damage mitigation (see filters in aws ec2 describe-instances help for available filters).

Build

To create a deployment package (code+dependencies):

./build.sh

Install

To install:

• Build
• Upload to S3
• Deploy cloudformation.yaml
• Tag instances

Permissions

Required role permissions:

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