1. Log in to your AWS Management Console.
2. Go to the EC2 Dashboard.
3. Click on the “AMIs” option from the left-hand navigation panel.
4. Identify the AMI which has exceeded the configured age.
5. Select the AMI and click on the “Actions” button.
6. Choose the “Deregister” option from the drop-down list.
7. Confirm the deregistration by clicking on the “Deregister” button in the confirmation dialog box.
8. Once the AMI is deregistered, you can create a new AMI with the latest updates and configurations.

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1. First, identify the AMIs that have exceeded the configured age by running the below command:
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   aws ec2 describe-images --owners self --query 'Images[?CreationDate<=`<configured_age>`].[ImageId,CreationDate]' --output text
   

   Note: Replace <configured_age> with the age limit in the format yyyy-mm-dd.
2. Once you have identified the AMIs, you can deregister them using the below command:
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   aws ec2 deregister-image --image-id <image_id>
   

   Note: Replace <image_id> with the ID of the AMI that you want to deregister.
3. Finally, to automate this process, you can create a Lambda function that runs the above commands on a scheduled basis to ensure that AMIs do not exceed the configured age limit.

1. Identify the misconfigured AMIs by checking their age against the configured age.
2. Create a Lambda function in AWS that uses the Boto3 library to identify the misconfigured AMIs.
3. Use the EC2 client in Boto3 to get a list of all the AMIs in your AWS account.
4. Loop through the list of AMIs and check the age of each one against the configured age.
5. If an AMI is older than the configured age, deregister it using the EC2 client.
6. Set up a CloudWatch event to trigger the Lambda function at a regular interval to ensure that all misconfigured AMIs are remediated in a timely manner.

import boto3
from datetime import datetime, timedelta

# Set the configured age of AMIs in days
configured_age = 30

# Create an EC2 client
ec2 = boto3.client('ec2')

# Get a list of all the AMIs in the account
response = ec2.describe_images(Owners=['self'])

# Loop through the list of AMIs and check their age
for image in response['Images']:
    creation_date = datetime.strptime(image['CreationDate'], '%Y-%m-%dT%H:%M:%S.%fZ')
    age_in_days = (datetime.now() - creation_date).days
    if age_in_days > configured_age:
        # Deregister the AMI
        ec2.deregister_image(ImageId=image['ImageId'])