CODEWITHSUNDEEP
amazon-web-servicesaws-lambdaboto3
Gusa27
Gusa27

Reputation: 57

AWS Lambda create EC2 and associate EIP

I am trying to deploy an EC2 instance and associate an EIP to it, but I am getting and error when trying to associate the EIP because the instance is not running. This is my code:

import boto3
from botocore.exceptions import ClientError
 
AMI = 'ami-0bf84....'    
INSTANCE_TYPE = 't2.micro'
KEY_NAME = 'EC2company'
SUBNET_ID = 'subnet-065....'
 
 
ec2 = boto3.client('ec2')
 
def lambda_handler(event, context):
 
    instance = ec2.run_instances(
        ImageId=AMI,
        InstanceType=INSTANCE_TYPE,
        KeyName=KEY_NAME,
        SubnetId=SUBNET_ID,
        MaxCount=1,
        MinCount=1
    )
        
    waiter = ec2.get_waiter('instance_running')
    
    try:
        response = ec2.associate_address(
            AllocationId='eipalloc-0bc.....',
            InstanceId=instance['Instances'][0]['InstanceId'],
        )
        print(response)
    except ClientError as e:
        print(e)

I suppose that the issue is related to be applying the waiter in the wrong way, and not sure how i should do it.

Upvotes: 1

Views: 50

Answers (1)

John Rotenstein
John Rotenstein

Reputation: 269861

As per EC2 waiters, you can create a waiter with:

waiter = client.get_waiter('instance_running')

You then activate the waiter with:

waiter.wait(InstanceIds=['i-xxx']

It polls EC2.Client.describe_instances() every 15 seconds until a successful state is reached. An error is returned after 40 failed checks.

Upvotes: 2

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