AWS RDS START / STOP

RDS Start / Stop is a Lambda Function code aims to stop/start RDS's on a scheduled basis.

Getting Started

These instructions will get you a copy of the project up and running on your AWS Account.

Prerequisites

What things you need to know / have before installing this lambda function.

AWS Account - Yay! It's so important
AWS Permissions - It's also..

Installing

First clone the script on your local and run below command to create node_modules on localy and zip the entire content but not parent directory.

npm install 

And then before creating a lambda function, we need to create a IAM Role. Below you can find CFN template or IAM Policy Raw for this role.

Policy

{
    "Version": "2012-10-17",
    "Statement": [        
        {
            "Action": [
                "rds:StopDBInstance",
                "rds:StartDBInstance"
            ],
            "Effect": "Allow",
            "Resource": "*"
        }
    ]
}

or CFN

  LambdaRdsStartStopRole:
    Type: 'AWS::IAM::Role'
    Condition: IsNotInfra
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - rds.amazonaws.com
                - lambda.amazonaws.com
            Action: 'sts:AssumeRole'
      Path: /
      Policies:
        - PolicyName: "lambda-rds-start-stop"
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - 
                Action:
                  - 'rds:StopDBInstance'
                  - 'rds:StartDBInstance'
                Resource: '*'
                Effect: Allow
      RoleName: "LambdaRdsStartStop"

And now we can create a lambda function.

1. Go to AWS console and proceeed with a nodeJS 6.10 Lambda function and Lambda IAM Role
2. Upload the zip code
3. And create the lambda function.

Running the tests

To test your function, on your lambda function page click actions > configure test event and put below json.

{ "instances": ["rds-instance-id"], "action":"stop" }

and after it's stopped, test with another config event;

{ "instances": ["rds-instance-id"], "action":"start" }

Note: Before using this on your Production or Real stack, take snapshot or test it on your dev environment.

Scheduling

For scheduling the lambda function;

1. Go to Cloudwatch > rules page and click "create rule" button.
2. On the left side of creation page, fill your event source. Example: Schedule | Cron | 0 5 ? * MON-FRI * => That will run every day from Monday to Friday at 5:00 AM.
3. On the right side of creation page, click "add target" button and find your Lambda Function.
4. Click "configure test input" and choose " Constant (JSON text)".
5. Write with the below JSON's for your needs .

Stopping the Instances:

{ "instances": ["rds-instance-id"], "action":"stop" }

Starting the Instances:

{ "instances": ["rds-instance-id"], "action":"start" }

Built With

• Lambda - The AWS Lambda
• NodeJs

Contributing

Wanna contribution ? Fork the project, commit and PR!

Authors

• Muhammet Arslan - Initial work - Geass

License

This project is licensed under the MIT License