nagios-plugin(mem)
#!/usr/bin/env python
import sys
from optparse import OptionParser
import string
OK=0
WARNING=1
CRITICAL=2
UNKNOWN=3
unit = {'t':2**40,'g':2**30,'m':2**20,'k':2**10,'b':1}
def opt():
parser = OptionParser(usage="usage: %prog -w WARNING -c CRITICAL")
parser.add_option("-c", default="100M", action="store", type="string", dest="critical")
parser.add_option("-w", default="500M", action="store", type="string", dest="warning")
return parser.parse_args()
def convertUnit(s):
s = s.lower()
lastchar = s[-1]
num = int(s[:-1])
if lastchar in unit:
return num*unit[lastchar]
else:
return int(s)
def scaleUnit(d):
for k,v in unit.items():
num = d / float(v)
if (0 < num < 2**10):
return num,k
def getFreeMemory():
with open('/proc/meminfo','r') as fd:
for line in fd.readlines():
if line.startswith('MemFree'):
k, v, u = line.split()
return int(v)*1024
def main():
opts, args = opt()
w = convertUnit(opts.warning)
c = convertUnit(opts.critical)
free_mem = getFreeMemory()
h_free, h_unit = scaleUnit(free_mem)
if free_mem > w:
print "OK, free:%s %s" % (h_free, h_unit)
sys.exit(OK)
elif w >= free_mem > c:
print "WARNING, free: %s %s" % (h_free, h_unit)
sys.exit(WARNING)
elif free_mem <= c:
print "CRITICAL, free: %s %s" % (h_free, h_unit)
sys.exit(CRITICAL)
else:
print "UNKNONW, free:%s %s" % (h_free, h_unit)
sys.exit(UNKNOWN)
if __name__ == "__main__":
main()
本文出自 “muzinan的技术博客” 博客，谢绝转载！