Nightly EC2 shutdown

shutdown.py

import boto3
import logging

#setup simple logging for INFO
logger = logging.getLogger()
logger.setLevel(logging.INFO)

#define the connection
ec2 = boto3.resource('ec2')

def lambda_handler(event, context):
    # Use the filter() method of the instances collection to retrieve
    # all running EC2 instances.
    filters = [{
            'Name': 'tag:PowerSave',
            'Values': ['nightly','Nightly','true','True']
        },
        {
            'Name': 'instance-state-name', 
            'Values': ['running']
        }
    ]
    
    #filter the instances
    instances = ec2.instances.filter(Filters=filters)

    #locate all running instances
    RunningInstances = [instance.id for instance in instances]
    
    
    #make sure there are actually instances to shut down. 
    if len(RunningInstances) > 0:
        #perform the shutdown
        shuttingDown = ec2.instances.filter(InstanceIds=RunningInstances).stop()
        print(shuttingDown)

start_stop_policy.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Stmt1444812758000",
            "Effect": "Allow",
            "Action": [
                "ec2:DescribeInstanceStatus",
                "ec2:DescribeInstances",
                "ec2:StartInstances",
                "ec2:StopInstances"
            ],
            "Resource": [
                "*"
            ]
        },
        {
            "Action": [
                "logs:CreateLogGroup",
                "logs:CreateLogStream",
                "logs:PutLogEvents"
            ],
            "Effect": "Allow",
            "Resource": "arn:aws:logs:*:*:*"
        }
    ]
}

startup.py

import boto3
import logging

#setup simple logging for INFO
logger = logging.getLogger()
logger.setLevel(logging.INFO)

#define the connection
ec2 = boto3.resource('ec2')

def lambda_handler(event, context):
    # Use the filter() method of the instances collection to retrieve
    # all running EC2 instances.
    filters = [{
            'Name': 'tag:PowerSave',
            'Values': ['nightly','Nightly','true','True']
        },
        {
            'Name': 'instance-state-name', 
            'Values': ['stopped']
        }
    ]
    
    #filter the instances
    instances = ec2.instances.filter(Filters=filters)

    #locate all stopped instances
    StoppedInstances = [instance.id for instance in instances]
    
    
    #make sure there are actually instances to shut down. 
    if len(StoppedInstances) > 0:
        startingUp = ec2.instances.filter(InstanceIds=StoppedInstances).start()
        print(startingUp)