Generic munin shell cmd monitor replace monitor_cmd with your shell cmd

munin-generic.py

#!/usr/bin/env python
#  munin-deleted-files.py
#
# Generic munin shell cmd monitor
# replace monitor_cmd with your shell cmd
#

from sys import exit,argv
import subprocess

##### Config #####

monitorprefix = "DelFiles"
host = "host"
monitor_cmd = "lsof | grep deleted | wc -l"

##################

def showconfig():
#    print 'host_name '+host
    print "graph_title "+monitorprefix
    print "graph_info Generated by munin-deleted-files.py script"
    print "graph_category disk"
    print "graph_scale yes"
    print monitorprefix+".label Nr"
    print monitorprefix+".info Number of open deleted filehandles"
    exit(0)

debug = 0

# Validate parameters
if len(argv[:]) > 1:
    if argv[1] == "config":
        showconfig()
    elif argv[1] == "debug" or argv[1] == "-d":
        debug = 1
    else:
        print "Unknown parameter."
        exit(1)

nr_of_procs = monitor_cmd.count("|")
for proc_part in range(0,nr_of_procs+1):
    cmd = monitor_cmd.split("|")[proc_part].strip()
    if debug == 1:
        print str(proc_part)+": "+cmd
    if proc_part == 0:
        p = subprocess.Popen(cmd.split(" "), stdout=subprocess.PIPE)
        value, err = p.communicate()
    else:
        p = subprocess.Popen(cmd.split(" "), stdin = subprocess.PIPE, stdout = subprocess.PIPE)
        p.stdin.write(value)
        value, err = p.communicate()

print monitorprefix+".value "+str(value).strip()