03c803b5ce
Currently we are querying the latest real time sample from vSphere and creating a sample out of it, in ceilometer. The sampling interval of real time samples in vSphere is 20 s. However, the interval at which the various pollsters are run is by default 600 s (10 mins). This CL attempts to improve the accuracy of the sample by averaging the samples over the pollster interval. Change-Id: Id75fe87840b82d7c7d3e4fae9b2fc982e22ea1d7 Implements: blueprint vmware-vcenter-server Closes-Bug: 1295500
180 lines
7.1 KiB
Python
180 lines
7.1 KiB
Python
# Copyright (c) 2014 VMware, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Implementation of Inspector abstraction for VMware vSphere"""
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from oslo.config import cfg
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from oslo.vmware import api
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from oslo.vmware import vim
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from ceilometer.compute.virt import inspector as virt_inspector
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from ceilometer.compute.virt.vmware import vsphere_operations
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from ceilometer.openstack.common import units
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opt_group = cfg.OptGroup(name='vmware',
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title='Options for VMware')
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OPTS = [
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cfg.StrOpt('host_ip',
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default='',
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help='IP address of the VMware Vsphere host'),
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cfg.StrOpt('host_username',
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default='',
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help='Username of VMware Vsphere'),
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cfg.StrOpt('host_password',
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default='',
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help='Password of VMware Vsphere'),
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cfg.IntOpt('api_retry_count',
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default=10,
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help='Number of times a VMware Vsphere API must be retried'),
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cfg.FloatOpt('task_poll_interval',
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default=0.5,
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help='Sleep time in seconds for polling an ongoing async '
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'task')
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]
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cfg.CONF.register_group(opt_group)
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cfg.CONF.register_opts(OPTS, group=opt_group)
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VC_AVERAGE_MEMORY_CONSUMED_CNTR = 'mem:consumed:average'
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VC_AVERAGE_CPU_CONSUMED_CNTR = 'cpu:usage:average'
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VC_NETWORK_RX_COUNTER = 'net:received:average'
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VC_NETWORK_TX_COUNTER = 'net:transmitted:average'
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VC_DISK_READ_RATE_CNTR = "disk:read:average"
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VC_DISK_READ_REQUESTS_RATE_CNTR = "disk:numberReadAveraged:average"
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VC_DISK_WRITE_RATE_CNTR = "disk:write:average"
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VC_DISK_WRITE_REQUESTS_RATE_CNTR = "disk:numberWriteAveraged:average"
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def get_api_session():
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hostIp = cfg.CONF.vmware.host_ip
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wsdl_loc = vim.Vim._get_wsdl_loc("https", hostIp)
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api_session = api.VMwareAPISession(
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hostIp,
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cfg.CONF.vmware.host_username,
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cfg.CONF.vmware.host_password,
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cfg.CONF.vmware.api_retry_count,
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cfg.CONF.vmware.task_poll_interval,
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wsdl_loc=wsdl_loc)
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return api_session
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class VsphereInspector(virt_inspector.Inspector):
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def __init__(self):
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super(VsphereInspector, self).__init__()
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self._ops = vsphere_operations.VsphereOperations(
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get_api_session(), 1000)
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def inspect_cpu_util(self, instance, duration=None):
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vm_moid = self._ops.get_vm_moid(instance.id)
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if vm_moid is None:
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raise virt_inspector.InstanceNotFoundException(
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_('VM %s not found in VMware Vsphere') % instance.id)
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cpu_util_counter_id = self._ops.get_perf_counter_id(
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VC_AVERAGE_CPU_CONSUMED_CNTR)
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cpu_util = self._ops.query_vm_aggregate_stats(
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vm_moid, cpu_util_counter_id, duration)
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# For this counter vSphere returns values scaled-up by 100, since the
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# corresponding API can't return decimals, but only longs.
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# For e.g. if the utilization is 12.34%, the value returned is 1234.
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# Hence, dividing by 100.
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cpu_util = cpu_util / 100
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return virt_inspector.CPUUtilStats(util=cpu_util)
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def inspect_vnic_rates(self, instance, duration=None):
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vm_moid = self._ops.get_vm_moid(instance.id)
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if not vm_moid:
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raise virt_inspector.InstanceNotFoundException(
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_('VM %s not found in VMware Vsphere') % instance.id)
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vnic_stats = {}
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vnic_ids = set()
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for net_counter in (VC_NETWORK_RX_COUNTER, VC_NETWORK_TX_COUNTER):
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net_counter_id = self._ops.get_perf_counter_id(net_counter)
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vnic_id_to_stats_map = self._ops.query_vm_device_stats(
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vm_moid, net_counter_id, duration)
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vnic_stats[net_counter] = vnic_id_to_stats_map
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vnic_ids.update(vnic_id_to_stats_map.iterkeys())
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# Stats provided from vSphere are in KB/s, converting it to B/s.
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for vnic_id in vnic_ids:
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rx_bytes_rate = (vnic_stats[VC_NETWORK_RX_COUNTER]
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.get(vnic_id, 0) * units.Ki)
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tx_bytes_rate = (vnic_stats[VC_NETWORK_TX_COUNTER]
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.get(vnic_id, 0) * units.Ki)
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stats = virt_inspector.InterfaceRateStats(rx_bytes_rate,
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tx_bytes_rate)
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interface = virt_inspector.Interface(
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name=vnic_id,
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mac=None,
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fref=None,
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parameters=None)
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yield (interface, stats)
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def inspect_memory_usage(self, instance, duration=None):
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vm_moid = self._ops.get_vm_moid(instance.id)
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if vm_moid is None:
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raise virt_inspector.InstanceNotFoundException(
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_('VM %s not found in VMware Vsphere') % instance.id)
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mem_counter_id = self._ops.get_perf_counter_id(
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VC_AVERAGE_MEMORY_CONSUMED_CNTR)
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memory = self._ops.query_vm_aggregate_stats(
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vm_moid, mem_counter_id, duration)
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# Stat provided from vSphere is in KB, converting it to MB.
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memory = memory / units.Ki
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return virt_inspector.MemoryUsageStats(usage=memory)
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def inspect_disk_rates(self, instance, duration=None):
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vm_moid = self._ops.get_vm_moid(instance.id)
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if not vm_moid:
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raise virt_inspector.InstanceNotFoundException(
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_('VM %s not found in VMware Vsphere') % instance.id)
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disk_stats = {}
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disk_ids = set()
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disk_counters = [
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VC_DISK_READ_RATE_CNTR,
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VC_DISK_READ_REQUESTS_RATE_CNTR,
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VC_DISK_WRITE_RATE_CNTR,
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VC_DISK_WRITE_REQUESTS_RATE_CNTR
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]
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for disk_counter in disk_counters:
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disk_counter_id = self._ops.get_perf_counter_id(disk_counter)
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disk_id_to_stat_map = self._ops.query_vm_device_stats(
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vm_moid, disk_counter_id, duration)
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disk_stats[disk_counter] = disk_id_to_stat_map
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disk_ids.update(disk_id_to_stat_map.iterkeys())
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for disk_id in disk_ids:
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def stat_val(counter_name):
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return disk_stats[counter_name].get(disk_id, 0)
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disk = virt_inspector.Disk(device=disk_id)
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# Stats provided from vSphere are in KB/s, converting it to B/s.
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disk_rate_info = virt_inspector.DiskRateStats(
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read_bytes_rate=stat_val(VC_DISK_READ_RATE_CNTR) * units.Ki,
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read_requests_rate=stat_val(VC_DISK_READ_REQUESTS_RATE_CNTR),
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write_bytes_rate=stat_val(VC_DISK_WRITE_RATE_CNTR) * units.Ki,
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write_requests_rate=stat_val(VC_DISK_WRITE_REQUESTS_RATE_CNTR)
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)
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yield(disk, disk_rate_info)
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