From 405cd4fcc4639e4c9f204bcebf852aeaf6a1b129 Mon Sep 17 00:00:00 2001 From: mh Date: Wed, 12 Sep 2012 13:04:33 +0200 Subject: add kvm plugins --- files/plugins/kvm_net | 143 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 files/plugins/kvm_net (limited to 'files/plugins/kvm_net') diff --git a/files/plugins/kvm_net b/files/plugins/kvm_net new file mode 100644 index 0000000..6da0d90 --- /dev/null +++ b/files/plugins/kvm_net @@ -0,0 +1,143 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- +# vim: set fileencoding=utf-8 +# +# Munin plugin to show the network I/O per vm +# On redhat based systems +# +# Copyright Igor Borodikhin +# Copyright Peter Meier +# +# 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 Network I/O +graph_vlabel Bytes rx(-)/tx(+) per second +graph_category KVM +graph_info This graph shows the network I/O of the virtual machines +graph_args --base 1024 + """ + print base_config + for vm in vm_names: + print "%s_in.label %s" % (vm, vm) + print "%s_in.type COUNTER" % vm + print "%s_in.min 0" % vm + print "%s_in.draw LINE2" % vm + print "%s_out.negative %s_in" % (vm, vm) + print "%s_out.label %s" % (vm, vm) + print "%s_out.type COUNTER" % vm + print "%s_out.min 0" % vm + print "%s_out.draw LINE2" % vm + +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 = {} + macs_to_inf = find_macs_to_inf() + interfaces = {} + for e in Popen('cat /proc/net/dev | awk \'{ print $1 ":" $9 }\'', shell=True, stdout=PIPE).communicate()[0].split('\n'): + s = e.split(':') + if len(s) == 3: + interfaces[s[0]] = (s[1],s[2]) + for pid in vms: + macs = get_vm_macs(pid) + for mac in macs: + inf = macs_to_inf[mac] + values = interfaces[inf] + if len(values) == 2: + print "%s_%s_in.value %s" % (vms[pid], inf, values[0]) + print "%s_%s_out.value %s" % (vms[pid], inf, values[1]) + +def detect_kvm(): + ''' Check if kvm is installed + ''' + kvm = Popen("which kvm", shell=True, stdout=PIPE) + kvm.communicate() + return not bool(kvm.returncode) + +def find_vm_names(pids): + '''Find and clean vm names from pids + @return a dictionnary of {pids : cleaned vm name} + ''' + result = {} + for pid in pids: + cmdline = open("/proc/%s/cmdline" % pid, "r") + result[pid] = clean_vm_name(re.sub(r"^.*-name\x00([a-zA-Z0-9.-]*)\x00\-.*$",r"\1", cmdline.readline())) + return result + +def get_vm_macs(pid): + '''Find macs for a pid + @return the mac addresses for a specified pid + ''' + cmdline = open("/proc/%s/cmdline" % pid, "r") + line = cmdline.readline() + # macs are fe:... on the host + macs = [ re.sub(r"^\d{2}",'fe',p.split('=')[1]) for p in line.split(",") if re.match(r"^mac(addr)?=",p) ] + return macs + +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() + +def find_macs_to_inf(): + ''' Find interfaces for vms + @return a dictionary of macs to inf + ''' + result = {} + inf = "" + kvm = Popen("ip a | grep -E -A 1 '(tap|vnet)' | awk '{print $2}' | grep -v '^$'", shell=True, stdout=PIPE) + res = kvm.communicate()[0].split('\n') + for line in res: + if len(line) > 0: + if re.match(r"^tap.*", line): + inf = re.sub(r"(tap[^:]+):", r"\1", line) + elif re.match(r"^vnet.*", line): + inf = re.sub(r"(vnet[^:]+):", r"\1", line) + else: + result[line] = inf + + return result + +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())) + -- cgit v1.2.3 From f85fe9d9b94a1f30dda6637722542884194edd39 Mon Sep 17 00:00:00 2001 From: mh Date: Sat, 15 Sep 2012 14:09:56 +0200 Subject: fix config and output --- files/plugins/kvm_net | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) (limited to 'files/plugins/kvm_net') diff --git a/files/plugins/kvm_net b/files/plugins/kvm_net index 6da0d90..c7aae2b 100644 --- a/files/plugins/kvm_net +++ b/files/plugins/kvm_net @@ -20,7 +20,7 @@ import re, os, sys from subprocess import Popen, PIPE -def config(vm_names): +def config(vms): ''' Print the plugin's config @param vm_names : a list of "cleaned" vms' name ''' @@ -31,16 +31,20 @@ graph_info This graph shows the network I/O of the virtual machines graph_args --base 1024 """ print base_config - for vm in vm_names: - print "%s_in.label %s" % (vm, vm) - print "%s_in.type COUNTER" % vm - print "%s_in.min 0" % vm - print "%s_in.draw LINE2" % vm - print "%s_out.negative %s_in" % (vm, vm) - print "%s_out.label %s" % (vm, vm) - print "%s_out.type COUNTER" % vm - print "%s_out.min 0" % vm - print "%s_out.draw LINE2" % vm + for pid in vms: + macs = get_vm_macs(pid) + i = 0 + for mac in macs: + print "%s_eth%s_in.label %s" % (vms[pid],i, vms[pid]) + print "%s_eth%s_in.type COUNTER" % (vms[pid], i) + print "%s_eth%s_in.min 0" % (vms[pid],i) + print "%s_eth%s_in.draw LINE2" % (vms[pid],i) + print "%s_eth%s_out.negative %s_in" % (vms[pid], i, vms[pid]) + print "%s_eth%s_out.label %s" % (vms[pid], i, vms[pid]) + print "%s_eth%s_out.type COUNTER" % (vms[pid], i) + print "%s_eth%s_out.min 0" % (vms[pid], i) + print "%s_eth%s_out.draw LINE2" % (vms[pid], i) + i += 1 def clean_vm_name(vm_name): ''' Replace all special chars @@ -67,12 +71,14 @@ def fetch(vms): interfaces[s[0]] = (s[1],s[2]) for pid in vms: macs = get_vm_macs(pid) + i = 0 for mac in macs: inf = macs_to_inf[mac] values = interfaces[inf] if len(values) == 2: - print "%s_%s_in.value %s" % (vms[pid], inf, values[0]) - print "%s_%s_out.value %s" % (vms[pid], inf, values[1]) + print "%s_eth%s_in.value %s" % (vms[pid], i, values[0]) + print "%s_eth%s_out.value %s" % (vms[pid], i, values[1]) + i += 1 def detect_kvm(): ''' Check if kvm is installed @@ -135,7 +141,7 @@ if __name__ == "__main__": else: print "no" elif sys.argv[1] == "config": - config(find_vm_names(list_pids()).values()) + config(find_vm_names(list_pids())) else: fetch(find_vm_names(list_pids())) else: -- cgit v1.2.3 From d304394caaf15c0bc1f23c5e57fabcdffd86b90d Mon Sep 17 00:00:00 2001 From: mh Date: Sat, 15 Sep 2012 15:12:45 +0200 Subject: fix plugin --- files/plugins/kvm_net | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'files/plugins/kvm_net') diff --git a/files/plugins/kvm_net b/files/plugins/kvm_net index c7aae2b..bcad719 100644 --- a/files/plugins/kvm_net +++ b/files/plugins/kvm_net @@ -39,7 +39,7 @@ graph_args --base 1024 print "%s_eth%s_in.type COUNTER" % (vms[pid], i) print "%s_eth%s_in.min 0" % (vms[pid],i) print "%s_eth%s_in.draw LINE2" % (vms[pid],i) - print "%s_eth%s_out.negative %s_in" % (vms[pid], i, vms[pid]) + print "%s_eth%s_out.negative %s_eth%s_in" % (vms[pid], i, vms[pid], i) print "%s_eth%s_out.label %s" % (vms[pid], i, vms[pid]) print "%s_eth%s_out.type COUNTER" % (vms[pid], i) print "%s_eth%s_out.min 0" % (vms[pid], i) -- cgit v1.2.3 From a29438a07e9af6ccdcadd465492e527f6ba4a8ab Mon Sep 17 00:00:00 2001 From: mh Date: Sat, 15 Sep 2012 16:18:54 +0200 Subject: cleanup plugins --- files/plugins/kvm_net | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'files/plugins/kvm_net') diff --git a/files/plugins/kvm_net b/files/plugins/kvm_net index bcad719..c7b5aca 100644 --- a/files/plugins/kvm_net +++ b/files/plugins/kvm_net @@ -28,19 +28,18 @@ def config(vms): graph_vlabel Bytes rx(-)/tx(+) per second graph_category KVM graph_info This graph shows the network I/O of the virtual machines -graph_args --base 1024 - """ +graph_args --base 1024""" print base_config for pid in vms: macs = get_vm_macs(pid) i = 0 for mac in macs: - print "%s_eth%s_in.label %s" % (vms[pid],i, vms[pid]) + print "%s_eth%s_in.label %s_eth%s" % (vms[pid],i, vms[pid], i) print "%s_eth%s_in.type COUNTER" % (vms[pid], i) print "%s_eth%s_in.min 0" % (vms[pid],i) print "%s_eth%s_in.draw LINE2" % (vms[pid],i) print "%s_eth%s_out.negative %s_eth%s_in" % (vms[pid], i, vms[pid], i) - print "%s_eth%s_out.label %s" % (vms[pid], i, vms[pid]) + print "%s_eth%s_out.label %s_eth%s" % (vms[pid], i, vms[pid], i) print "%s_eth%s_out.type COUNTER" % (vms[pid], i) print "%s_eth%s_out.min 0" % (vms[pid], i) print "%s_eth%s_out.draw LINE2" % (vms[pid], i) -- cgit v1.2.3