Lambda_Start_Stop_EC2_With_CloudWatch

Lambda Function for Start_Stop_EC2 instance and attached to CloudWatch and scheduled to start Stop automatic on define time.

In side IAM role create Policies

 

Next, In roles “create role” and then select “Lambda” then “Permission” then select a policy from the list.

Give role name and click create

Give a name to the role.

 

Next in Lambda “Create a function”

In index.js put below code.

const AWS = require('aws-sdk');

exports.handler = (event, context, callback) => {
    const ec2 = new AWS.EC2({ region: event.instanceRegion });
    ec2.stopInstances({ InstanceIds: [event.instanceId] }).promise()
        .then(() => callback(null, `Successfully stopped ${event.instanceId}`))
        .catch(err => callback(err));

};

Create a testing case.

Test case looks like.

{
  "instanceRegion": "us-east-2",
  "instanceId": "i-004f28d6362128cc8"
}

Check test result.

Response:
"Successfully stopped i-004f28d6362128cc8"
Request ID:
"02f1a0e4-d27d-409c-ab6c-dab867ba2810"
Function Logs:
START RequestId: 02f1a0e4-d27d-409c-ab6c-dab867ba2810 Version: $LATEST
END RequestId: 02f1a0e4-d27d-409c-ab6c-dab867ba2810
REPORT RequestId: 02f1a0e4-d27d-409c-ab6c-dab867ba2810      Duration: 2248.11 ms     Billed Duration: 2300 ms          Memory Size: 128 MB    Max Memory Used: 75 MB          

On AWS console we can see instance going to stopping.

Create the same for start instance.

For start past below code

const AWS = require('aws-sdk');

exports.handler = (event, context, callback) => {
    const ec2 = new AWS.EC2({ region: event.instanceRegion });
    ec2.startInstances({ InstanceIds: [event.instanceId] }).promise()
        .then(() => callback(null, `Successfully started ${event.instanceId}`))
        .catch(err => callback(err));
};

Create the same test instance. Now you can see EC2 instance started.

For scheduling these process we under “Cloud Watch”  rules. Create a rule.

Provide a name.

Create same for the stop.