Finding PID's of Virtual Machine in openstack -

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i working on openstack , want monitor virtual machines cpu usage. want find pids through parent (central) openstack instance. used

ps aux | grep

and did receive output. want confirm if correct pid. way can check this?

or other way find pid's of virtual machine?

update. command not work . gives me pid change. not constant. thank you

well libvirt has interfaces this. here's python extracts data datastructures you:

#!/usr/bin/env python  # modules import subprocess import traceback import commands import signal import time import sys import re import os import getopt import pprint    try:     import libvirt except:     print "no libvirt detected"     sys.exit(0) xml.dom.minidom import parsestring  global instances global virt_conn global tick global virt_exist  def virtstats():     global virt_exist     global virt_conn     global instances     cpu_stats = []     if virt_exist == true:         if virt_conn == none:             print 'failed open connection hypervisor'             virt_exist = false      if virt_exist == true:          virt_info = virt_conn.getinfo()         x in range(0, virt_info[2]):             cpu_stats.append(virt_conn.getcpustats(x,0))         virt_capabilities = virt_conn.getcapabilities()         domcpustats = 0         # domcpustats = virdomain::getcpustats()         totmem = 0         totvcpu = 0         totcount = 0         vcpu_stats = []         id in virt_conn.listdomainsid():             dom = virt_conn.lookupbyid(id)             totvcpu += dom.maxvcpus()             vcpu_stats.append(dom.vcpus())             totmem += dom.maxmemory()             totcount += 1          dom = parsestring(virt_capabilities)         xmltag = dom.getelementsbytagname('model')[0].toxml()         xmldata=xmltag.replace('<model>','').replace('</model>','')         info in virt_info:             print info         stat in cpu_stats:             print "cpu %s" % stat         vstat in vcpu_stats:             print "vcpu:\n"             pprint.pprint(vstat)         print "cpu ( %s ) use - %s vcpus ( %s logical processors )" % (xmldata, totvcpu, virt_info[2])         sys.exit(0)    def main():      try:         global virt_conn         global virt_exist         virt_conn = libvirt.openreadonly(none)         virt_exist = true     except:         virt_exist = false         print "ok: not compute node"         sys.exit(0)      virtstats()  if __name__ == "__main__":     main()

now in terms of usage cpu time.

the vcpu blocks in layout:

1st: vcpu number, starting 0. 2nd: vcpu state.     0: offline     1: running     2: blocked on resource 3rd: cpu time used in nanoseconds 4th: real cpu number

the cpu blocks obvious once realize that's what's goin down in libvirt.

hope helps!


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