CODEWITHSUNDEEP
python-2.7amazon-web-servicesamazon-ec2aws-lambdaamazon-ami
Nagarjuna D N
Nagarjuna D N

Reputation: 561

Run AWS Lambda to create AMI of the instance in a different region

I am using AWS Lambda to create AMIs on daily basis for my EC2 prod instance. All my infra setup in in a Mumbai region but AWS doesn't support Lambda functionality in Mumbai region yet.

So, I chose Singapore region to setup Lambda. I followed the links create-AMI and cleanup-ami to create and delete AMIs after retention period, however, this works only if I have the instance in Singapore region with the specified tags in the code.

My question here is: how can I create AMI for Mumbai instances whilst my Lambda is in Singapore region?

Upvotes: 0

Views: 2442

Answers (2)

vikramaditya234
vikramaditya234

Reputation: 1408

If you are looking to share-copy the AMI from one account to another. Here is the solution:

# Copying image from src_account to dest_account
SRC_ACCOUNT_ID = '111111'
DEST_ACCOUNT_ID = '222222'
IMAGE_ID = '333333'
SRC_REGION = 'us-west-1'
DEST_REGION = 'us-east-1'

# Create CrossAccountole Role in src_account which will give permission to operations in the acount
sts = boto3.client('sts')
credentials = sts.assume_role(
    RoleArn='arn:aws:iam::'+SRC_ACCOUNT_ID +':role/CrossAccountRole',
    RoleSessionName="RoleSession1"
)['Credentials']
ec2 = boto3.resource('ec2', region_name=SRC_REGION,
    aws_access_key_id = credentials['AccessKeyId'],
    aws_secret_access_key = credentials['SecretAccessKey'],
    aws_session_token = credentials['SessionToken']
)

# Access the image that needs to be copied
image = ec2.Image(IMAGE_ID)

# Share the image with the destination account
image.modify_attribute(
    ImageId = image.id,
    Attribute = 'launchPermission',
    OperationType = 'add',
    LaunchPermission = {
        'Add' : [{ 'UserId': DEST_ACCOUNT_ID }]
    }
)

# We have to now share the snapshots associated with the AMI so it can be copied
devices = image.block_device_mappings
for device in devices:
    if 'Ebs' in device:
        snapshot_id = device["Ebs"]["SnapshotId"]
        snapshot = ec2.Snapshot(snapshot_id)
        snapshot.modify_attribute(
            Attribute = 'createVolumePermission',
            CreateVolumePermission = {
                'Add' : [{ 'UserId': DEST_ACCOUNT_ID }]
            },
            OperationType = 'add',
        )

# Access destination account so we can now copy the image
credentials = sts.assume_role(
    RoleArn='arn:aws:iam::'+DEST_ACCOUNT_ID+':role/CrossAccountRole',
    RoleSessionName="RoleSession1"
)['Credentials']

# Copy image to failover regions
ec2fra = boto3.client('ec2', DEST_REGION,
    aws_access_key_id = credentials['AccessKeyId'],
    aws_secret_access_key = credentials['SecretAccessKey'],
    aws_session_token = credentials['SessionToken']
)

# Copy the shared AMI to dest region
ec2fra.copy_image(
    Name = 'MY_COPIED_IMAGE_FROM_OTHER_ACCOUNT',
    SourceImageId = image.id,
    SourceRegion = SRC_REGION
)

There it is, simple :)

Read about commands here

Upvotes: 0

Jonathan Seed
Jonathan Seed

Reputation: 2017

You can set the region when initializing the boto client :
ec = boto3.client('ec2', region_name='ap-south-1')

Upvotes: 3

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