host/usr/share/xvm-munin-host-config/plugins/xen_cpu

   1 #!/usr/bin/python
   2 import sys
   3 sys.path.append('/usr/lib/xen-default/lib/python/')
   4 from xen.xm.main import SERVER_LEGACY_XMLRPC, SERVER_XEN_API, parseServer, parseAuthentication
   5 from xen.xend import sxp
   6 import atexit
   7 import sys
   8
   9 serverType, serverURI = parseServer()
  10
  11 if serverType != SERVER_LEGACY_XMLRPC:
  12     print >>sys.stderr, "xen_cpu is untested with this Xen server type"
  13     sys.exit(1)
  14
  15 if serverType == SERVER_XEN_API:
  16     from xen.xm import XenAPI
  17     server = XenAPI.Session(serverURI)
  18     username, password = parseAuthentication()
  19     server.login_with_password(username, password)
  20     def logout():
  21         try:
  22             server.xenapi.session.logout()
  23         except:
  24             pass
  25     atexit.register(logout)
  26 else:
  27     from xen.util.xmlrpcclient import ServerProxy
  28     server = ServerProxy(serverURI)
  29
  30 if len(sys.argv) > 1:
  31     cmd = sys.argv[1]
  32 else:
  33     cmd = None
  34
  35 def getDomains():
  36     ret = {}
  37     if serverType == SERVER_XEN_API:
  38         domains = server.xenapi.VM.get_all_records()
  39         metrics = server.xenapi.VM_metrics.get_all_records()
  40         for d in domains.values():
  41             ret['uuid_'+d['uuid'].replace('-', '_')] = {'name': d['name_label'],
  42                                                         'cpu_time': sum(metrics[d['metrics']]['VCPUs_utilisation'].values()),
  43                                                         'domid': d['domid'],
  44                                                         'uuid': d['uuid'],
  45                                                         # No equivalent
  46                                                         }
  47         return ret
  48     else:
  49         domains = server.xend.domains_with_state(True, 'all', True)
  50         for d in domains:
  51             data = {'name': sxp.child_value(d, 'name', 'UNKNOWN'),
  52                     'cpu_time': sxp.child_value(d, 'cpu_time', 0.0),
  53                     'domid': sxp.child_value(d, 'domid', -1),
  54                     'uuid': sxp.child_value(d, 'uuid', 'NONE'),
  55                     }
  56             try:
  57                 sched = server.xend.domain.sched_credit_get(data['name'])
  58                 data['sched-credit'] = sched
  59             except:
  60                 data['sched-credit'] = None
  61             ret['uuid_'+sxp.child_value(d, 'uuid', 'NONE').replace('-', '_')] = data
  62         return ret
  63
  64 if cmd == 'config':
  65     print """
  66 graph_title Xen domain CPU usage
  67 graph_args --base 1000 -r --lower-limit 0 --upper-limit 800
  68 graph_vlabel %
  69 graph_scale no
  70 graph_info This graph shows how CPU time is spent by Xen domains.
  71 graph_category system
  72 graph_period second"""
  73     domains = getDomains()
  74     for d in sorted(domains):
  75         name = domains[d]['name']
  76         if name[0:2] == 'd_':
  77             name = 'db domid %d' % domains[d]['domid']
  78         print "%s.label %s" % (d, name)
  79         if domains[d]['domid'] == 0:
  80             print "%s.draw AREA" % d
  81         else:
  82             print "%s.draw STACK" % d
  83         print "%s.max 19200000000" % d # 64x 100% CPU usage
  84         print "%s.min 0" % d
  85         print "%s.type DERIVE" % d
  86         if domains[d].get('sched-credit'):
  87             print "%s.info uuid %s CPU weight %d cap %d%%" % (d, domains[d]['uuid'], domains[d]['sched-credit']['weight'], domains[d]['sched-credit']['cap'])
  88         else:
  89             print "%s.info uuid %s" % (d, domains[d]['uuid'])
  90         print "%s.cdef %s,10000,/" % (d, d)
  91     sys.exit(0)
  92
  93 domains = getDomains()
  94 for d in sorted(domains):
  95     print "%s.value %s" % (d, long(domains[d]['cpu_time']*1000000))