Get opsworks stack name from agent config

get_stack_name.py

import os
import boto3
from yaml import load

os.environ.setdefault('AWS_DEFAULT_REGION', 'us-east-1')

if __name__ == '__main__':
    with open('/etc/aws/opsworks/instance-agent.yml') as f:
        agent_config = load(f)
        instance_id = agent_config[':identity']
    opsworks = boto3.client('opsworks')
    instances = opsworks.describe_instances(InstanceIds=[instance_id])
    stack_id = instances['Instances'][0]['StackId']
    stacks = opsworks.describe_stacks(StackIds=[stack_id])
    print stacks['Stacks'][0]['Name']