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| #!/usr/bin/env python
# -*- coding:utf-8 -*-
"""
Nagios plugin to report Memory usage by parsing /proc/meminfo nagios安装
by L.S. Keijser <keijser@stone- >
This script takes Cached memory into consideration by adding that
to the total MemFree value.
modified by jastme ,can used by pnp4nagios
"""
from optparse import OptionParser import sys
checkmemver = '0.1'
# Parse commandline options: parser = OptionParser(usage="%prog -w <warning threshold> -c <critical threshold> [ -h ]",version="%prog " + checkmemver)
parser.add_option("-w", "--warning",
action="store", type="string", dest="warn_threshold", help="Warning threshold in percentage") 开源监控软件 parser.add_option("-c", "--critical",
action="store", type="string", dest="crit_threshold", help="Critical threshold in percentage")
(options, args) = parser.parse_args()
def readLines(filename):
f = open(filename, "r")
lines = f.readlines()
return lines
def readMemValues():
global memTotal, memCached, memFree
for line in readLines('/proc/meminfo'):
if line.split()[0] == 'MemTotal:':
memTotal = line.split()[1]
if line.split()[0] == 'MemFree:':
memFree = line.split()[1]
if line.split()[0] == 'Cached:':
memCached = line.split()[1]
def percMem():
readMemValues()
return (((int(memFree) + int(memCached)) * 100) / int(memTotal)) nagios配置 def realMem():
readMemValues()
return (int(memFree) + int(memCached)) / 1024
def go():
if not options.crit_threshold:
print "UNKNOWN: Missing critical threshold value."
sys.exit(3)
if not options.warn_threshold:
print "UNKNOWN: Missing warning threshold value."
sys.exit(3)
if int(options.crit_threshold) >= int(options.warn_threshold):
print "UNKNOWN: Critical percentage can't be equal to or bigger than warning percentage." 监控软件 sys.exit(3)
trueFree = percMem()
trueMemFree = realMem()
if int(trueFree) <= int(options.crit_threshold):
print "CRITICAL: Free memory percentage is less than or equal to %s%% %s %sMB | mem = %sMB;6546;3273;0;32732" %(str(options.crit_threshold),str(trueFree),str(trueMemFree),str(trueMemFree))
sys.exit(2)
if int(trueFree) <= int(options.warn_threshold):
print "WARNING: Free memory percentage is less than or equal to %s%% %s %sMB | mem = %sMB;6546;3273;0;32732" %(str(options.warn_threshold),str(trueFree),str(trueMemFree),str(trueMemFree)) nagios实施 sys.exit(1)
else:
print "OK: Free memory percentage is %s%% %sMB | mem = %sMB;6546;3273;0;32732" % (str(trueFree),str(trueMemFree),str(trueMemFree))
sys.exit(0)
if __name__ == '__main__': nagios培训 go()
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