Nagios Haproxy Health Check

check_haproxy_health.py

#!/usr/bin/env python

import sys
import urllib2

if len(sys.argv) != 2:
    print('USAGE: {0} <hostname>').format(sys.argv[0])
    sys.exit(2)

try:
    error = ''
    haproxy_url = 'http://' + str(sys.argv[1]) + '/;csv;noreload'
    haproxy_status = urllib2.urlopen(
        haproxy_url, timeout=10).read().rstrip().split("\n")

    if not len(haproxy_status):
        error = 'Ecelerity HAProxy status page contains unexpected output'
    else:
        for row in haproxy_status:
            status = row.split(',')
            # Rows must have the correct number of fields
            if len(status) != 56:
                error = 'Incorrect number of fields returned from HAProxy ' + \
                        'status page'
            # A status of OPEN/UP is fine, so is a column header of
            # 'status'
            elif status[17] not in ['OPEN', 'UP', 'status']:
                error = 'Status other than UP ({0}) found for {1}'.format(
                    status[17], status[1])
except urllib2.HTTPError, e:
    error = str(e.reason)
except urllib2.URLError, e:
    error = str(e.reason)

if len(error):
    print('CRITICAL - ' + error)
    sys.exit(2)
else:
    print('OK - Ecelerity HAProxy is healthy')
    sys.exit(0)