Plugin for Nagios I wrote to monitor temperature data from sensors serving XML in homeAmation format. See: http://homeamation/azurewebsites.net

check_temperature_wo

#!/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()