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2. Fariddin Im

copy the script below

import json

import boto3

import datetime


#User inputs should be given here

#=======================================================================================================

instanceList = ['replace instance id']

snsTopic = 'replace arn of sns topic'

#=======================================================================================================


ec2client = boto3.client('ec2')

snsclient = boto3.client('sns')

currentDT = datetime.datetime.now()

date = currentDT.strftime("%m-%d-%Y")

delDate = currentDT + datetime.timedelta(days=2)

delDate = delDate.strftime("%m-%d-%Y")


def delete_ami(name):

try:

describeImages = ec2client.describe_images(Filters=[{'Name': 'tag:Name','Values': ['AMIBackup-'+name]}])['Images']

for image in describeImages:

imageId = image['ImageId']

snapList = [i['Ebs']['SnapshotId'] for i in image['BlockDeviceMappings']]

for tag in image['Tags']:

try:

if tag['Key'] == 'DeleteOn':

tagDelDate = tag['Value']

except Exception as e:

print ('Tag Errors: ',e)

if tagDelDate == date:

print ('Deregistering image: ',imageId)

dereg_img = ec2client.deregister_image(ImageId=imageId)

for snapId in snapList:

print ('Deleting Snapshot: ',snapId)

del_snap = ec2client.delete_snapshot(SnapshotId=snapId)

#response=snsclient.publish(TopicArn=snsTopic,Message= 'Image of AMIBackup-'+name+' with image id - '+imageId+' has been deleted.',Subject='Delete AMI Notification',MessageStructure='String',)

else:

print ('Image cannot be deleted: ',imageId)

except Exception as e:

print ('Image Deletion Errors: ',e)

def lambda_handler(event, context):

try:

response = ec2client.describe_instances(InstanceIds = instanceList)

for instance in response['Reservations']:

for i in instance['Instances']:

try:

tagList = i.get('Tags','')

for tag in tagList:

if tag.get('Key','') == 'Name':

name = tag.get('Value','')

delete_ami(name)

break

createImage = ec2client.create_image(InstanceId=i.get('InstanceId',''),Name="Lambda - " + i.get('InstanceId','') + " from " + date + "(2 Days Backup)", Description="Lambda created AMI of instance " + i.get('InstanceId','') + " from " + date, NoReboot=True, DryRun=False)

createTags = ec2client.create_tags(Resources=[createImage.get('ImageId','')],Tags=[{'Key': 'Name','Value': 'AMIBackup-'+name},{'Key': 'DeleteOn','Value': delDate}])

print ('Image Created: ',createImage)

#publish = snsclient.publish(TopicArn= snsTopic,Message= 'AMI ('+createImage.get('ImageId','')+') of '+name+' ('+i.get('InstanceId','')+') has been created with a 2 days rolling back policy.',Subject='AMI Creation Notification',MessageStructure='String',)

except Exception as e:

print ('Image Creation Errors: ',e)

except Exception as e:

print ('Errors: ',e)




till here copy
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