Fetches all the instance information of a given AWS Elastic Load Balancer

elb_instances.py

import boto
from boto import regioninfo
from boto import ec2

ACCESS_KEY_ID = ''
SECRET_ACCESS_KEY = ''

elb_region = boto.regioninfo.RegionInfo(
    name='eu-west-1', 
    endpoint='elasticloadbalancing.eu-west-1.amazonaws.com')

elb_connection = boto.connect_elb(
    aws_access_key_id=ACCESS_KEY_ID, 
    aws_secret_access_key=SECRET_ACCESS_KEY, 
    region=elb_region)

ec2_region = ec2.get_region(
    aws_access_key_id=ACCESS_KEY_ID,
    aws_secret_access_key=SECRET_ACCESS_KEY, 
    region_name='eu-west-1')

ec2_connection = boto.ec2.connection.EC2Connection(
    aws_access_key_id=ACCESS_KEY_ID, 
    aws_secret_access_key=SECRET_ACCESS_KEY,
    region=ec2_region)

LOAD_BALANCER_NAME = ""
load_balancer = elb_connection.get_all_load_balancers(load_balancer_names=[LOAD_BALANCER_NAME])[0]
instance_ids = [ instance.id for instance in load_balancer.instances ]
reservations = ec2_connection.get_all_instances(instance_ids)
instance_addresses = [ i for r in reservations for i in r.instances ]

print reservations
print instance_addresses

for i in instance_addresses:
    print "INSTANCE: ",i.private_ip_address, i.private_dns_name, i.public_dns_name

print dir(instance_addresses[0])