ec2Terminator

This AWS lambda function will terminate AWS EC2 instance daily when the last commit of specific github repository:branch is older than 3 days.

Prerequisites

• AWS Lambda
• AWS Cloudwatch
• AWS IAM
• AWS CloudFormation
• Serverless Framework

Installing the Serverless Framework

npm -g install serverless

Setting up AWS credentials

Check out Serverless guide to learn more about Serverless Framework

AWS EC2 Instance

The following tags are required when launching AWS EC2 Instance for ec2Terminator to check the most recent commit time of specific github repository:branch

serverType: <ServerType>
repoOwner: <GithubRepositoryOwnerName>
repoName: <GithubRepositoryName>
featureBranch: <BranchName>

Configuration

To change AWS region, modify region in serverless.yml

provider:
  region: us-west-2

To change serverType tag filter, modify SERVER_TYPE in serverless.yml

provider:
  environment:
    SERVER_TYPE: dev

Deploy

In order to deploy ec2Terminator, simply run:

npm install
serverless deploy

The expected result should be similar to:

Serverless: Packaging service...
Serverless: Excluding development dependencies...
Serverless: Creating Stack...
Serverless: Checking Stack create progress...
.....
Serverless: Stack create finished...
Serverless: Uploading CloudFormation file to S3...
Serverless: Uploading artifacts...
Serverless: Uploading service .zip file to S3 (1.7 KB)...
Serverless: Validating template...
Serverless: Updating Stack...
Serverless: Checking Stack update progress...
.....................
Serverless: Stack update finished...
Service Information
service: sls-ec2Terminator
stage: dev
region: us-west-2
stack: sls-ec2Terminator-dev
api keys:
  None
endpoints:
  None
functions:
  ec2Terminator: sls-ec2Terminator-dev-ec2Terminator

Usage

You can now invoke the Lambda directly and even see the resulting log via

serverless invoke --function ec2Terminator --log

Frequently invoking ec2Terminator might be failed if exceeding github API rate limit, check out Github API rate limit for the detail.