nagios监控cloudstack的主机的状态

#!/usr/bin/python
#desc: this script is to check the status of hosts  in cloudstack
#     can use -h to show usage

import os,sys
import json
from optparse import OptionParser

E_OK = 0
E_WARNING = 1
E_CRITICAL = 2
E_UNKNOWN = 3
E_CODE = E_OK

parser = OptionParser()
parser.add_option("-i","--ignore",dest="ignore",
help="ipaddress that ignore to check ")
(options,args) = parser.parse_args()

comm = '/usr/bin/cloudmonkey -d json list hosts type=Routing filter=ipaddress,state'
performance = ''
info = ''

host_info = os.popen(comm).read()
host_json = json.loads(host_info)['host']
if options.ignore:
for item in host_json:
if not item['ipaddress'] in options.ignore and item['state'] != 'Up':
info += '%s : %s' % (item['ipaddress'],item['state'])
E_CODE = E_CRITICAL
else:
for item in host_json:
if item['state'] != 'Up':
info += '%s:%s; ' % (item['ipaddress'],item['state'])
E_CODE = E_CRITICAL

if E_CODE == E_OK :
performance += 'OK'
elif E_CODE == E_WARNING:
performance = 'WARNING-' + info
elif E_CODE == E_CRITICAL:
performance = 'CRITICAL-' + info
else:
performance = 'UNKNOWN-' + info

print performance
sys.exit(E_CODE)