Starting /Stopping EC2 Instance using Lambda on different Date & Time

Picture Melvin L

lamba_function.py

import boto3
import datetime

region = 'ap-south-1'
instances = ['i-0sdfsdf3434']

def lambda_handler(event, context):
    current_time = datetime.datetime.now().time()
    current_day = datetime.datetime.now().weekday()

    ec2 = boto3.client('ec2', region_name=region)

    if current_day == 4 and current_time >= datetime.time(22, 0):
        ec2.stop_instances(InstanceIds=instances)
        print('Stopped your instances: ' + str(instances))
    elif current_time >= datetime.time(20, 0):
        ec2.stop_instances(InstanceIds=instances)
        print('Stopped your instances: ' + str(instances))
    else:

        print('No action required at the current time.')

Lambda Function Python Code to Start & Stop EC2

1. The code uses the datetime module to get the current time and day of the week.
2. Inside the lambda_handler function, it checks if the current day is Friday (current_day == 4) and the current time is equal to or greater than 10 PM (current_time >= datetime.time(22, 0)).

• If the condition is true, it stops the instances using ec2.stop_instances() and prints a message.

3. If the current time is equal to or greater than 8 PM (current_time >= datetime.time(20, 0)), it stops the instances using ec2.stop_instances() and prints a message. This condition applies to all days except Friday.

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4. If the current time and day do not match any of the conditions, it prints a message stating that no action is required at the current time.

Make sure to replace ‘i-0sdfsdf3434’ with the actual instance ID you want to start and stop. Additionally, ensure that you have the necessary permissions in your AWS Lambda function to start and stop EC2 instances.