check-elb-5xx

import boto.ec2.cloudwatch
import datetime
from optparse import OptionParser
import ConfigParser
import sys
import os

config = ConfigParser.ConfigParser()
config.read(os.path.expanduser('~/.aws.conf'))
id = config.get("AWS", "consumer_key", raw=True)
key = config.get("AWS", "consumer_secret", raw=True)

parser = OptionParser()
parser.add_option("-r", "--region", dest="region", help="Region to be connected", metavar="REGION_NAME")
parser.add_option("-l", "--elb", dest="elb", help="elb name from cloudwatch", metavar="ELB_NAME")
parser.add_option("-i", "--interval", dest="interval", help="time intercal in minutes", metavar="ELB_NAME")
parser.add_option("-c", "--critical", dest="critical", help="The critical threshold in number", metavar="CRITICAL")
parser.add_option("-w", "--warning", dest="warning", help="The warning threshold in number", metavar="WARNING")
(options, args) = parser.parse_args()

cw_obj = boto.ec2.cloudwatch.connect_to_region(options.region,aws_access_key_id=id,aws_secret_access_key=key)

data = cw_obj.get_metric_statistics(start_time=datetime.datetime.now()-datetime.timedelta(minutes=int(options.interval)), end_time=datetime.datetime.now(), metric_name="HTTPCode_Backend_5XX", namespace="AWS/ELB", statistics=["Sum"], period=60, dimensions={"LoadBalancerName":options.elb})

elb_5xx = 0
for d in data:
  elb_5xx = elb_5xx + d['Sum']

print "Number of 5xx served by %s: %d" % (options.elb, elb_5xx)
if elb_5xx > int(options.critical):
  sys.exit(2)
elif elb_5xx > int(options.warning):
  sys.exit(1)
elif elb_5xx < int(options.warning):
  sys.exit(0)
else:
  sys.exit(3)