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Plugin for Nagios I wrote to monitor temperature data from sensors serving XML in homeAmation format. See: http://homeamation/azurewebsites.net
#!/bin/env python
'''
Created on Jan 21, 2012
@author: jeffa aka @jhalbrecht
'''
# jha 8/17/2013
# Prepare code for publishing.
# jha 1/21/2012
# http://www.ibm.com/developerworks/aix/library/au-nagios/#iratings
# http://www.gefoo.org/generalfoo/?p=201
import sys
import getopt
import urllib2
from xml.dom.minidom import parseString
nagios_codes = {'OK': 0, 'WARNING': 1, 'CRITICAL': 2, 'UNKNOWN': 3, 'DEPENDENT': 4}
def nagios_return(code, response):
# Prints the response message and exits the script with
# one of the defined exit codes.
print code + ': ' + response
sys.exit(nagios_codes[code])
def usage():
print """Usage: check_temperature [-h|--help] [-w|--warning level] [-c|--critical level]
Warning level defaults to 85.0
Critical level defaults to 95.0"""
sys.exit(3)
def main():
try:
options, args = getopt.getopt(sys.argv[1:],
"h:w:c:",
"--help --warning= --critical=",)
except getopt.GetoptError:
usage()
sys.exit(3)
Warning = 85.0 ; Critical = 95.0
for name, value in options:
if name in ("-h", "--help"):
usage()
if name in ("-w", "--warning"):
try:
Warning = 0.0 + float(value)
except Exception:
nagios_return('UNKNOWN','Unable to convert to floating point value')
if name in ("-c", "--critical"):
try:
Critical = 0.0 + float(value)
except Exception:
nagios_return('UNKNOWN','Unable to convert to floating point value')
# download the file
try:
# jha 8/17/2013 Align with HomeAmation expectations
# MODIFY HERE
# with url to your temperature XML FQDN or ip address
file = urllib2.urlopen("http://x.y.z.h/PutYourUrlHere")
except Exception:
nagios_return('UNKNOWN','urlopen failed')
#convert to string:
data = file.read()
#close file because we dont need it anymore:
file.close()
#parse the xml you downloaded
dom = parseString(data)
#retrieve the first xml tag (<tag>data</tag>) that the parser finds with name tagName:
xmlTag = dom.getElementsByTagName('CurrentTemperature0')[0].toxml()
#strip off the tag (<tag>data</tag> ---> data):
xmlData=xmlTag.replace('<CurrentTemperature0>','').replace('</CurrentTemperature0>','')
# Checking for excessive heat. Could enhance to check for excessive cold
if float(xmlData) >= Critical:
nagios_return('CRITICAL','Temperature: %.2f fahrenheit' % float(xmlData))
elif float(xmlData) >= Warning:
# nagios_return('WARNING','Temperature: ' + xmlData + ' fahrenheit')
# bingled a nice format string
nagios_return('WARNING','Temperature: %.2f fahrenheit' % float(xmlData))
else:
nagios_return('OK','Temperature: %.2f fahrenheit' % float(xmlData))
if __name__ == '__main__':
main()
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