Finding Unused Elastic Load Balancers
[caption id="attachment_239" align="aligncenter" width="225"]
A Load Balancer[/caption]
AWS imposes limits on the number of Elastic LoadBalancers. Before asking for a limit increase, it is worthwhile to check if your load balancers are actually used and have healthy instances.
Using excellent boto framework for Python, I built a simple script to find all ELBs where there is an instance in OutOfService state or where there are no instances at all:
A Load Balancer[/caption]AWS imposes limits on the number of Elastic LoadBalancers. Before asking for a limit increase, it is worthwhile to check if your load balancers are actually used and have healthy instances.
Using excellent boto framework for Python, I built a simple script to find all ELBs where there is an instance in OutOfService state or where there are no instances at all:
from optparse import OptionParser
from time import sleep
import boto.ec2.elb
itembuffer = []
parser = OptionParser()
parser.add_option("-i", "--awsKeyId",
dest="awsKeyId", type="string", action="store",
help="AWS Access Key Id")
parser.add_option("-k", "--awsSecretKey",
dest="awsSecretKey", type="string", action="store",
help="AWS Secret Access Key")
(options, args) = parser.parse_args()
elb = boto.ec2.elb.connect_to_region('us-east-1' ,
aws_access_key_id=options.awsKeyId,
aws_secret_access_key=options.awsSecretKey)
allElbs = elb.get_all_load_balancers()
for lb in allElbs:
instances = lb.get_instance_health()
if len(instances)==0:
print lb
for instanceState in instances:
if instanceState.state == 'OutOfService':
print lb