src/emuvim/dcemulator/monitoring.py

   1 __author__ = 'Administrator'
   2
   3 import urllib2
   4 import logging
   5 from mininet.node import  OVSSwitch
   6 import ast
   7 import time
   8 from prometheus_client import start_http_server, Summary, Histogram, Gauge, Counter, REGISTRY, CollectorRegistry, \
   9     pushadd_to_gateway, push_to_gateway, delete_from_gateway
  10 import threading
  11 from subprocess import Popen, PIPE
  12 import os
  13
  14 import paramiko
  15 import gevent
  16
  17 logging.basicConfig(level=logging.INFO)
  18
  19 """
  20 class to read openflow stats from the Ryu controller of the DCNetwork
  21 """
  22
  23 class DCNetworkMonitor():
  24     def __init__(self, net):
  25         self.net = net
  26
  27         prometheus_ip = '127.0.0.1'
  28         prometheus_port = '9090'
  29         self.prometheus_REST_api = 'http://{0}:{1}'.format(prometheus_ip, prometheus_port)
  30
  31
  32
  33         # helper variables to calculate the metrics
  34         self.pushgateway = 'localhost:9091'
  35         # Start up the server to expose the metrics to Prometheus.
  36         #start_http_server(8000)
  37         # supported Prometheus metrics
  38         self.registry = CollectorRegistry()
  39         self.prom_tx_packet_count = Gauge('sonemu_tx_count_packets', 'Total number of packets sent',
  40                                           ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry)
  41         self.prom_rx_packet_count = Gauge('sonemu_rx_count_packets', 'Total number of packets received',
  42                                           ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry)
  43         self.prom_tx_byte_count = Gauge('sonemu_tx_count_bytes', 'Total number of bytes sent',
  44                                         ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry)
  45         self.prom_rx_byte_count = Gauge('sonemu_rx_count_bytes', 'Total number of bytes received',
  46                                         ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry)
  47
  48         self.prom_metrics={'tx_packets':self.prom_tx_packet_count, 'rx_packets':self.prom_rx_packet_count,
  49                            'tx_bytes':self.prom_tx_byte_count,'rx_bytes':self.prom_rx_byte_count}
  50
  51         # list of installed metrics to monitor
  52         # each entry can contain this data
  53         '''
  54         {
  55         switch_dpid = 0
  56         vnf_name = None
  57         vnf_interface = None
  58         previous_measurement = 0
  59         previous_monitor_time = 0
  60         metric_key = None
  61         mon_port = None
  62         }
  63         '''
  64         self.monitor_lock = threading.Lock()
  65         self.monitor_flow_lock = threading.Lock()
  66         self.network_metrics = []
  67         self.flow_metrics = []
  68
  69         # start monitoring thread
  70         self.start_monitoring = True
  71         self.monitor_thread = threading.Thread(target=self.get_network_metrics)
  72         self.monitor_thread.start()
  73
  74         self.monitor_flow_thread = threading.Thread(target=self.get_flow_metrics)
  75         self.monitor_flow_thread.start()
  76
  77         # helper tools
  78         #self.pushgateway_process = self.start_PushGateway()
  79         #self.prometheus_process = self.start_Prometheus()
  80         self.cadvisor_process = self.start_cadvisor()
  81
  82     # first set some parameters, before measurement can start
  83     def setup_flow(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=0):
  84
  85         flow_metric = {}
  86
  87         # check if port is specified (vnf:port)
  88         if vnf_interface is None:
  89             # take first interface by default
  90             connected_sw = self.net.DCNetwork_graph.neighbors(vnf_name)[0]
  91             link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw]
  92             vnf_interface = link_dict[0]['src_port_id']
  93
  94         flow_metric['vnf_name'] = vnf_name
  95         flow_metric['vnf_interface'] = vnf_interface
  96
  97         vnf_switch = None
  98         for connected_sw in self.net.DCNetwork_graph.neighbors(vnf_name):
  99             link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw]
 100             for link in link_dict:
 101                 # logging.info("{0},{1}".format(link_dict[link],vnf_interface))
 102                 if link_dict[link]['src_port_id'] == vnf_interface:
 103                     # found the right link and connected switch
 104                     # logging.info("{0},{1}".format(link_dict[link]['src_port_id'], vnf_source_interface))
 105                     vnf_switch = connected_sw
 106                     flow_metric['mon_port'] = link_dict[link]['dst_port_nr']
 107                     break
 108
 109         if not vnf_switch:
 110             logging.exception("vnf switch of {0}:{1} not found!".format(vnf_name, vnf_interface))
 111             return "vnf switch of {0}:{1} not found!".format(vnf_name, vnf_interface)
 112
 113         try:
 114             # default port direction to monitor
 115             if metric is None:
 116                 metric = 'tx_packets'
 117
 118             next_node = self.net.getNodeByName(vnf_switch)
 119
 120             if not isinstance(next_node, OVSSwitch):
 121                 logging.info("vnf: {0} is not connected to switch".format(vnf_name))
 122                 return
 123
 124             flow_metric['previous_measurement'] = 0
 125             flow_metric['previous_monitor_time'] = 0
 126
 127             flow_metric['switch_dpid'] = int(str(next_node.dpid), 16)
 128             flow_metric['metric_key'] = metric
 129             flow_metric['cookie'] = cookie
 130
 131             self.monitor_flow_lock.acquire()
 132             self.flow_metrics.append(flow_metric)
 133             self.monitor_flow_lock.release()
 134
 135             logging.info('Started monitoring flow:{3} {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric, cookie))
 136             return 'Started monitoring flow:{3} {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric, cookie)
 137
 138         except Exception as ex:
 139             logging.exception("setup_metric error.")
 140             return ex.message
 141
 142     def stop_flow(self, vnf_name, vnf_interface=None, metric=None, cookie=0):
 143         for flow_dict in self.flow_metrics:
 144             if flow_dict['vnf_name'] == vnf_name and flow_dict['vnf_interface'] == vnf_interface \
 145                     and flow_dict['metric_key'] == metric and flow_dict['cookie'] == cookie:
 146
 147                 self.monitor_flow_lock.acquire()
 148
 149                 self.flow_metrics.remove(flow_dict)
 150
 151                 for collector in self.registry._collectors:
 152                     if (vnf_name, vnf_interface, cookie) in collector._metrics:
 153                         #logging.info('2 name:{0} labels:{1} metrics:{2}'.format(collector._name, collector._labelnames,
 154                         #                                                        collector._metrics))
 155                         collector.remove(vnf_name, vnf_interface, cookie)
 156
 157                 delete_from_gateway(self.pushgateway, job='sonemu-SDNcontroller')
 158
 159                 self.monitor_flow_lock.release()
 160
 161                 logging.info('Stopped monitoring flow {3}: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric, cookie))
 162                 return 'Stopped monitoring flow {3}: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric, cookie)
 163
 164
 165     # first set some parameters, before measurement can start
 166     def setup_metric(self, vnf_name, vnf_interface=None, metric='tx_packets'):
 167
 168         network_metric = {}
 169
 170         # check if port is specified (vnf:port)
 171         if vnf_interface is None:
 172             # take first interface by default
 173             connected_sw = self.net.DCNetwork_graph.neighbors(vnf_name)[0]
 174             link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw]
 175             vnf_interface = link_dict[0]['src_port_id']
 176
 177         network_metric['vnf_name'] = vnf_name
 178         network_metric['vnf_interface'] = vnf_interface
 179
 180         for connected_sw in self.net.DCNetwork_graph.neighbors(vnf_name):
 181             link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw]
 182             for link in link_dict:
 183                 # logging.info("{0},{1}".format(link_dict[link],vnf_interface))
 184                 if link_dict[link]['src_port_id'] == vnf_interface:
 185                     # found the right link and connected switch
 186                     # logging.info("{0},{1}".format(link_dict[link]['src_port_id'], vnf_source_interface))
 187                     network_metric['mon_port'] = link_dict[link]['dst_port_nr']
 188                     break
 189
 190         if 'mon_port' not in network_metric:
 191             logging.exception("vnf interface {0}:{1} not found!".format(vnf_name,vnf_interface))
 192             return "vnf interface {0}:{1} not found!".format(vnf_name,vnf_interface)
 193
 194         try:
 195             # default port direction to monitor
 196             if metric is None:
 197                 metric = 'tx_packets'
 198
 199             vnf_switch = self.net.DCNetwork_graph.neighbors(str(vnf_name))
 200
 201             if len(vnf_switch) > 1:
 202                 logging.info("vnf: {0} has multiple ports".format(vnf_name))
 203                 return
 204             elif len(vnf_switch) == 0:
 205                 logging.info("vnf: {0} is not connected".format(vnf_name))
 206                 return
 207             else:
 208                 vnf_switch = vnf_switch[0]
 209             next_node = self.net.getNodeByName(vnf_switch)
 210
 211             if not isinstance(next_node, OVSSwitch):
 212                 logging.info("vnf: {0} is not connected to switch".format(vnf_name))
 213                 return
 214
 215             network_metric['previous_measurement'] = 0
 216             network_metric['previous_monitor_time'] = 0
 217
 218
 219             network_metric['switch_dpid'] = int(str(next_node.dpid), 16)
 220             network_metric['metric_key'] = metric
 221
 222             self.monitor_lock.acquire()
 223
 224             self.network_metrics.append(network_metric)
 225             self.monitor_lock.release()
 226
 227
 228             logging.info('Started monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric))
 229             return 'Started monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric)
 230
 231         except Exception as ex:
 232             logging.exception("setup_metric error.")
 233             return ex.message
 234
 235     def stop_metric(self, vnf_name, vnf_interface=None, metric=None):
 236
 237         for metric_dict in self.network_metrics:
 238             #logging.info('start Stopped monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric_dict))
 239             if metric_dict['vnf_name'] == vnf_name and metric_dict['vnf_interface'] == vnf_interface \
 240                     and metric_dict['metric_key'] == metric:
 241
 242                 self.monitor_lock.acquire()
 243
 244                 self.network_metrics.remove(metric_dict)
 245
 246                 #this removes the complete metric, all labels...
 247                 #REGISTRY.unregister(self.prom_metrics[metric_dict['metric_key']])
 248                 #self.registry.unregister(self.prom_metrics[metric_dict['metric_key']])
 249
 250                 for collector in self.registry._collectors :
 251                     #logging.info('name:{0} labels:{1} metrics:{2}'.format(collector._name, collector._labelnames, collector._metrics))
 252                     """
 253                     INFO:root:name:sonemu_rx_count_packets
 254                     labels:('vnf_name', 'vnf_interface')
 255                     metrics:{(u'tsrc', u'output'): < prometheus_client.core.Gauge
 256                     object
 257                     at
 258                     0x7f353447fd10 >}
 259                     """
 260                     logging.info('{0}'.format(collector._metrics.values()))
 261                     #if self.prom_metrics[metric_dict['metric_key']]
 262                     if (vnf_name, vnf_interface, 'None') in collector._metrics:
 263                         logging.info('2 name:{0} labels:{1} metrics:{2}'.format(collector._name, collector._labelnames,
 264                                                                               collector._metrics))
 265                         #collector._metrics = {}
 266                         collector.remove(vnf_name, vnf_interface, 'None')
 267
 268                 # set values to NaN, prometheus api currently does not support removal of metrics
 269                 #self.prom_metrics[metric_dict['metric_key']].labels(vnf_name, vnf_interface).set(float('nan'))
 270
 271                 # this removes the complete metric, all labels...
 272                 # 1 single monitor job for all metrics of the SDN controller
 273                 # we can only  remove from the pushgateway grouping keys(labels) which we have defined for the add_to_pushgateway
 274                 # we can not specify labels from the metrics to be removed
 275                 # if we need to remove the metrics seperatelty, we need to give them a separate grouping key, and probably a diffferent registry also
 276                 delete_from_gateway(self.pushgateway, job='sonemu-SDNcontroller')
 277
 278                 self.monitor_lock.release()
 279
 280                 logging.info('Stopped monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric))
 281                 return 'Stopped monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric)
 282
 283             # delete everything from this vnf
 284             elif metric_dict['vnf_name'] == vnf_name and vnf_interface is None and metric is None:
 285                 self.monitor_lock.acquire()
 286                 self.network_metrics.remove(metric_dict)
 287                 for collector in self.registry._collectors:
 288                     collector_dict = collector._metrics.copy()
 289                     for name, interface, id in collector_dict:
 290                         if name == vnf_name:
 291                             logging.info('3 name:{0} labels:{1} metrics:{2}'.format(collector._name, collector._labelnames,
 292                                                                            collector._metrics))
 293                             collector.remove(name, interface, 'None')
 294
 295                 delete_from_gateway(self.pushgateway, job='sonemu-SDNcontroller')
 296                 self.monitor_lock.release()
 297                 logging.info('Stopped monitoring vnf: {0}'.format(vnf_name))
 298                 return 'Stopped monitoring: {0}'.format(vnf_name)
 299
 300
 301     # get all metrics defined in the list and export it to Prometheus
 302     def get_flow_metrics(self):
 303         while self.start_monitoring:
 304
 305             self.monitor_flow_lock.acquire()
 306
 307             for flow_dict in self.flow_metrics:
 308                 data = {}
 309
 310                 data['cookie'] = flow_dict['cookie']
 311
 312                 if 'tx' in flow_dict['metric_key']:
 313                     data['match'] = {'in_port':flow_dict['mon_port']}
 314                 elif 'rx' in flow_dict['metric_key']:
 315                     data['out_port'] = flow_dict['mon_port']
 316
 317
 318                 # query Ryu
 319                 ret = self.net.ryu_REST('stats/flow', dpid=flow_dict['switch_dpid'], data=data)
 320                 flow_stat_dict = ast.literal_eval(ret)
 321
 322                 #logging.info('received flow stat:{0} '.format(flow_stat_dict))
 323                 self.set_flow_metric(flow_dict, flow_stat_dict)
 324
 325             self.monitor_flow_lock.release()
 326             time.sleep(1)
 327
 328     def get_network_metrics(self):
 329         while self.start_monitoring:
 330
 331             self.monitor_lock.acquire()
 332
 333             # group metrics by dpid to optimize the rest api calls
 334             dpid_list = [metric_dict['switch_dpid'] for metric_dict in self.network_metrics]
 335             dpid_set = set(dpid_list)
 336
 337             for dpid in dpid_set:
 338
 339                 # query Ryu
 340                 ret = self.net.ryu_REST('stats/port', dpid=dpid)
 341                 port_stat_dict = ast.literal_eval(ret)
 342
 343                 metric_list = [metric_dict for metric_dict in self.network_metrics
 344                                if int(metric_dict['switch_dpid'])==int(dpid)]
 345                 #logging.info('1set prom packets:{0} '.format(self.network_metrics))
 346                 for metric_dict in metric_list:
 347                     self.set_network_metric(metric_dict, port_stat_dict)
 348
 349             self.monitor_lock.release()
 350             time.sleep(1)
 351
 352     # add metric to the list to export to Prometheus, parse the Ryu port-stats reply
 353     def set_network_metric(self, metric_dict, port_stat_dict):
 354         # vnf tx is the datacenter switch rx and vice-versa
 355         metric_key = self.switch_tx_rx(metric_dict['metric_key'])
 356         switch_dpid = metric_dict['switch_dpid']
 357         vnf_name = metric_dict['vnf_name']
 358         vnf_interface = metric_dict['vnf_interface']
 359         previous_measurement = metric_dict['previous_measurement']
 360         previous_monitor_time = metric_dict['previous_monitor_time']
 361         mon_port = metric_dict['mon_port']
 362
 363         for port_stat in port_stat_dict[str(switch_dpid)]:
 364             if int(port_stat['port_no']) == int(mon_port):
 365                 port_uptime = port_stat['duration_sec'] + port_stat['duration_nsec'] * 10 ** (-9)
 366                 this_measurement = int(port_stat[metric_key])
 367                 #logging.info('set prom packets:{0} {1}:{2}'.format(this_measurement, vnf_name, vnf_interface))
 368
 369                 # set prometheus metric
 370                 self.prom_metrics[metric_dict['metric_key']].\
 371                     labels({'vnf_name': vnf_name, 'vnf_interface': vnf_interface, 'flow_id': None}).\
 372                     set(this_measurement)
 373                 #push_to_gateway(self.pushgateway, job='SDNcontroller',
 374                 #                grouping_key={'metric':metric_dict['metric_key']}, registry=self.registry)
 375
 376                 # 1 single monitor job for all metrics of the SDN controller
 377                 pushadd_to_gateway(self.pushgateway, job='sonemu-SDNcontroller', registry=self.registry)
 378
 379                 if previous_monitor_time <= 0 or previous_monitor_time >= port_uptime:
 380                     metric_dict['previous_measurement'] = int(port_stat[metric_key])
 381                     metric_dict['previous_monitor_time'] = port_uptime
 382                     # do first measurement
 383                     #logging.info('first measurement')
 384                     time.sleep(1)
 385                     self.monitor_lock.release()
 386
 387                     metric_rate = self.get_network_metrics()
 388                     return metric_rate
 389
 390                 else:
 391                     time_delta = (port_uptime - metric_dict['previous_monitor_time'])
 392                     metric_rate = (this_measurement - metric_dict['previous_measurement']) / float(time_delta)
 393                     #logging.info('metric: {0} rate:{1}'.format(metric_dict['metric_key'], metric_rate))
 394
 395                 metric_dict['previous_measurement'] = this_measurement
 396                 metric_dict['previous_monitor_time'] = port_uptime
 397                 return metric_rate
 398
 399         logging.exception('metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface))
 400         return 'metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface)
 401
 402     def set_flow_metric(self, metric_dict, flow_stat_dict):
 403         # vnf tx is the datacenter switch rx and vice-versa
 404         #metric_key = self.switch_tx_rx(metric_dict['metric_key'])
 405         metric_key = metric_dict['metric_key']
 406         switch_dpid = metric_dict['switch_dpid']
 407         vnf_name = metric_dict['vnf_name']
 408         vnf_interface = metric_dict['vnf_interface']
 409         previous_measurement = metric_dict['previous_measurement']
 410         previous_monitor_time = metric_dict['previous_monitor_time']
 411         cookie = metric_dict['cookie']
 412
 413         # TODO aggregate all found flow stats
 414         flow_stat = flow_stat_dict[str(switch_dpid)][0]
 415         if 'bytes' in  metric_key:
 416             counter = flow_stat['byte_count']
 417         elif 'packet' in metric_key:
 418             counter = flow_stat['packet_count']
 419
 420         flow_uptime = flow_stat['duration_sec'] + flow_stat['duration_nsec'] * 10 ** (-9)
 421
 422         self.prom_metrics[metric_dict['metric_key']]. \
 423             labels({'vnf_name': vnf_name, 'vnf_interface': vnf_interface, 'flow_id': cookie}). \
 424             set(counter)
 425         pushadd_to_gateway(self.pushgateway, job='sonemu-SDNcontroller', registry=self.registry)
 426
 427         #logging.exception('metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface))
 428         #return 'metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface)
 429
 430     def query_Prometheus(self, query):
 431         '''
 432         escaped_chars='{}[]'
 433         for old in escaped_chars:
 434             new = '\{0}'.format(old)
 435             query = query.replace(old, new)
 436         '''
 437         url = self.prometheus_REST_api + '/' + 'api/v1/query?query=' + query
 438         #logging.info('query:{0}'.format(url))
 439         req = urllib2.Request(url)
 440         ret = urllib2.urlopen(req).read()
 441         ret = ast.literal_eval(ret)
 442         if ret['status'] == 'success':
 443             #logging.info('return:{0}'.format(ret))
 444             try:
 445                 ret = ret['data']['result'][0]['value']
 446             except:
 447                 ret = None
 448         else:
 449             ret = None
 450         return ret
 451
 452     def start_Prometheus(self, port=9090):
 453         # prometheus.yml configuration file is located in the same directory as this file
 454         cmd = ["docker",
 455                "run",
 456                "--rm",
 457                "-p", "{0}:9090".format(port),
 458                "-v", "{0}/prometheus.yml:/etc/prometheus/prometheus.yml".format(os.path.dirname(os.path.abspath(__file__))),
 459                "-v", "{0}/profile.rules:/etc/prometheus/profile.rules".format(os.path.dirname(os.path.abspath(__file__))),
 460                "--name", "prometheus",
 461                "prom/prometheus"
 462                ]
 463         logging.info('Start Prometheus container {0}'.format(cmd))
 464         return Popen(cmd)
 465
 466     def start_PushGateway(self, port=9091):
 467         cmd = ["docker",
 468                "run",
 469                "-d",
 470                "-p", "{0}:9091".format(port),
 471                "--name", "pushgateway",
 472                "prom/pushgateway"
 473                ]
 474
 475         logging.info('Start Prometheus Push Gateway container {0}'.format(cmd))
 476         return Popen(cmd)
 477
 478     def start_cadvisor(self, port=8090):
 479         cmd = ["docker",
 480                "run",
 481                "--rm",
 482                "--volume=/:/rootfs:ro",
 483                "--volume=/var/run:/var/run:rw",
 484                "--volume=/sys:/sys:ro",
 485                "--volume=/var/lib/docker/:/var/lib/docker:ro",
 486                "--publish={0}:8080".format(port),
 487                "--name=cadvisor",
 488                "google/cadvisor:latest"
 489                ]
 490         logging.info('Start cAdvisor container {0}'.format(cmd))
 491         return Popen(cmd)
 492
 493     def stop(self):
 494         # stop the monitoring thread
 495         self.start_monitoring = False
 496         self.monitor_thread.join()
 497         self.monitor_flow_thread.join()
 498
 499         '''
 500         if self.prometheus_process is not None:
 501             logging.info('stopping prometheus container')
 502             self.prometheus_process.terminate()
 503             self.prometheus_process.kill()
 504             self._stop_container('prometheus')
 505
 506         if self.pushgateway_process is not None:
 507             logging.info('stopping pushgateway container')
 508             self.pushgateway_process.terminate()
 509             self.pushgateway_process.kill()
 510             self._stop_container('pushgateway')
 511         '''
 512
 513         if self.cadvisor_process is not None:
 514             logging.info('stopping cadvisor container')
 515             self.cadvisor_process.terminate()
 516             self.cadvisor_process.kill()
 517             self._stop_container('cadvisor')
 518
 519     def switch_tx_rx(self,metric=''):
 520         # when monitoring vnfs, the tx of the datacenter switch is actually the rx of the vnf
 521         # so we need to change the metric name to be consistent with the vnf rx or tx
 522         if 'tx' in metric:
 523             metric = metric.replace('tx','rx')
 524         elif 'rx' in metric:
 525             metric = metric.replace('rx','tx')
 526
 527         return metric
 528
 529     def _stop_container(self, name):
 530         cmd = ["docker",
 531                "stop",
 532                name]
 533         Popen(cmd).wait()
 534
 535         cmd = ["docker",
 536                "rm",
 537                name]
 538         Popen(cmd).wait()
 539
 540     def profile(self, mgmt_ip, rate, input_ip, vnf_uuid ):
 541
 542         ssh = paramiko.SSHClient()
 543         ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 544         #ssh.connect(mgmt_ip, username='steven', password='test')
 545         ssh.connect(mgmt_ip, username='root', password='root')
 546
 547         iperf_cmd = 'iperf -c {0} -u -l18 -b{1}M -t1000 &'.format(input_ip, rate)
 548         if rate > 0:
 549             stdin, stdout, stderr = ssh.exec_command(iperf_cmd)
 550
 551         start_time = time.time()
 552         query_cpu = '(sum(rate(container_cpu_usage_seconds_total{{id="/docker/{0}"}}[{1}s])))'.format(vnf_uuid, 1)
 553         while (time.time() - start_time) < 15:
 554             data = self.query_Prometheus(query_cpu)
 555             # logging.info('rate: {1} data:{0}'.format(data, rate))
 556             gevent.sleep(0)
 557             time.sleep(1)
 558
 559         query_cpu2 = '(sum(rate(container_cpu_usage_seconds_total{{id="/docker/{0}"}}[{1}s])))'.format(vnf_uuid, 8)
 560         cpu_load = float(self.query_Prometheus(query_cpu2)[1])
 561         output = 'rate: {1}Mbps; cpu_load: {0}%'.format(round(cpu_load * 100, 2), rate)
 562         output_line = output
 563         logging.info(output_line)
 564
 565         stop_iperf = 'pkill -9 iperf'
 566         stdin, stdout, stderr = ssh.exec_command(stop_iperf)
 567
 568         return output_line
 569