起動(Python)

startEC2.py

import json
import boto3
import os

instances = [os.environ['INSTANCE_ID']]
region = "ap-northeast-1"

def lambda_handler(event, context):
    ec2 = boto3.client('ec2',region_name=region)
    ec2.start_instances(InstanceIds=instances)
    
    return {
        'statusCode': 200,
        'body': json.dumps('Started Instance')
    }

Pythonでの環境変数の指定方法はos.environ。

停止（Node.js）

stopEC2.js

var AWS = require('aws-sdk'); 
AWS.config.region = 'ap-northeast-1';

function StopEC2(callback){
  var ec2 = new AWS.EC2();
  var params = {
    InstanceIds: [
      process.env['INSTANCE_ID']
    ]
  };

  ec2.stopInstances(params, function(err, data) {
    if (err) {
      console.log("ERROR", err);
    } else {
      console.log(data);
      callback();
    }
  });
}

exports.handler = function(event, context) {
  console.log('Process Start');
  StopEC2(function() {
    context.done(null, 'Stoped Instance');
  });
};

nodeでの環境変数の指定方法はprocess.env。