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diff --git a/files/plugins/kvm_mem b/files/plugins/kvm_mem
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+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# vim: set fileencoding=utf-8
+#
+# Munin plugin to show amount of memory used by vm
+#
+# Copyright Maxence Dunnewind, Rodolphe QuiƩdeville, Adrien Pujol
+#
+# License : GPLv3
+#
+# parsed environment variables:
+# vmsuffix: part of vm name to be removed
+#
+#%# capabilities=autoconf
+#%# family=contrib
+
+import re, os, sys
+from subprocess import Popen, PIPE
+
+def config(vm_names):
+ ''' Print the plugin's config
+ @param vm_names : a list of "cleaned" vms' name
+ '''
+ base_config = """graph_title KVM Virtual Machine Memory usage
+graph_vlabel Bytes
+graph_category KVM
+graph_info This graph shows the current amount of memory used by virtual machines
+graph_args --base 1024
+ """
+ print base_config
+ draw = "AREA"
+ for vm in vm_names:
+ print "%s_mem.label %s" % (vm, vm)
+ print "%s_mem.type GAUGE" % vm
+ if draw == 'AREA':
+ print "%s_mem.min 0" % vm
+ print "%s_mem.draw %s" % (vm, draw)
+ print "%s_mem.info memory used by virtual machine %s" % (vm, vm)
+ draw = "STACK"
+
+
+def clean_vm_name(vm_name):
+ ''' Replace all special chars
+ @param vm_name : a vm's name
+ @return cleaned vm's name
+ '''
+ # suffix part defined in conf
+ suffix = os.getenv('vmsuffix')
+ if suffix:
+ vm_name = re.sub(suffix,'',vm_name)
+
+ return re.sub(r"[^a-zA-Z0-9_]", "_", vm_name)
+
+def fetch(vms):
+ ''' Fetch values for a list of pids
+ @param dictionnary {kvm_pid: cleaned vm name}
+ '''
+ res = {}
+ for pid in vms:
+ try:
+ cmdline = open("/proc/%s/cmdline" % pid, "r")
+ amount = re.sub(r"^.*-m\x00(.*)\x00-smp.*$",r"\1", cmdline.readline())
+ ammount = int(amount) * 1024 * 1024
+ print "%s_mem.value %s" % (vms[pid], ammount)
+ except:
+ cmdline = open("/proc/%s/cmdline" % pid, "r")
+ amount = re.sub(r"^.*-m\x00(\d+).*$",r"\1", cmdline.readline())
+ ammount = int(amount) * 1024 * 1024
+ print "%s_mem.value %s" % (vms[pid], ammount)
+
+def detect_kvm():
+ ''' Check if kvm is installed
+ '''
+ kvm = Popen("which kvm", shell=True, stdout=PIPE)
+ kvm.communicate()
+ return not bool(kvm.returncode)
+
+def find_vm_names(pids):
+ '''Find and clean vm names from pids
+ @return a dictionnary of {pids : cleaned vm name}
+ '''
+ result = {}
+ for pid in pids:
+ cmdline = open("/proc/%s/cmdline" % pid, "r")
+ result[pid] = clean_vm_name(re.sub(r"^.*-name\x00([a-zA-Z0-9.-]*)\x00\-.*$",r"\1", cmdline.readline()))
+ return result
+
+def list_pids():
+ ''' Find the pid of kvm processes
+ @return a list of pids from running kvm
+ '''
+ pid = Popen("pidof qemu-kvm kvm", shell=True, stdout=PIPE)
+ return pid.communicate()[0].split()
+
+if __name__ == "__main__":
+ if len(sys.argv) > 1:
+ if sys.argv[1] in ['autoconf', 'detect']:
+ if detect_kvm():
+ print "yes"
+ else:
+ print "no"
+ elif sys.argv[1] == "config":
+ config(find_vm_names(list_pids()).values())
+ else:
+ fetch(find_vm_names(list_pids()))
+ else:
+ fetch(find_vm_names(list_pids()))