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

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