check_cpu

#!/usr/bin/python

#### Author : Taha Ali
#### Created: 08/14/2015
#### Contact: tahazohair@gmail.com
###
##
# Summary : This program calculates the true multicore load average. it divides the total number of cores available
# in your system with the load average value, which returns true multi core load average.
##
###
import os
import sys
import optparse

# nagios exit status
OK = 0
WARN = 1
CRIT = 2
UNKNOWN = 3

# Parameters optioning
parser = optparse.OptionParser(
    usage="%prog -c <critical_value> -w <warning_value> \nAuthor:\t\tTaha Ali \nContact:\ttahazohair@gmail.com",
    prog='check_cpu.py',
    version='1.0',
    )
parser.add_option('-c', '--critical',
                  dest="critical",
                  default="3",
                  # action="store",
                  type="float",
                  help="critical value times 100% default value set at 3 or 300%",
                  )
parser.add_option('-w', '--warning',
                  dest="warning",
                  default="2",
                  # action="store",
                  type="float",
                  help="warning value times 100% default value set at 2 or 200%",
                  )
(options, args) = parser.parse_args()

# get data from parameters optioning and feed it into warning and critical variables
critical = options.critical
warning = options.warning

# get the load average
load = os.getloadavg()
# get the first value of the load average
load1 = float(load[0])
# get how many cores or processors we have in the box
cores = open('/proc/cpuinfo').read().count('processor')


# Calculation ( loadaverage / number of cores = true load in percentage )
def load():
    loadavg = float(load1 / cores)
    if loadavg >= critical:
        print "CRITICAL: cpu load average over :", loadavg * 100, '%'
        sys.exit(CRIT)
    elif warning <= loadavg < critical:
        print "WARNING: cpu load average over :", loadavg * 100, '%'
        sys.exit(WARN)
    elif loadavg < warning:
        print "Load average OK : ", loadavg * 100, '%'
        sys.exit(OK)
    else:
        print ("UNKNOWN: unable to process load average : ", loadavg)
        sys.exit(UNKNOWN)


load()