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[Bug 1309058] Re: Invalid vcpus_used count after failed migration

 

** Changed in: nova
     Assignee: (unassigned) => Zhenzan Zhou (zhenzan-zhou)

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1309058

Title:
  Invalid vcpus_used count after failed migration

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  I have a setup consisting of controller + network + 2 x compute nodes.
  The compute nodes have 8 cores each and use only local storage for
  VMs.

  Initially on controller 1 I have 3 VMs running with one VCPU for each
  of them:

  2014-04-17 05:06:18.985 2137 INFO nova.compute.resource_tracker [-] Compute_service record updated for mz216srv014.mds.t-mobile.net:mz216srv014.mds.t-mobile.net
  2014-04-17 05:06:38.244 2137 AUDIT nova.compute.resource_tracker [-] Auditing locally available compute resources
  2014-04-17 05:06:38.605 2137 AUDIT nova.compute.resource_tracker [-] Free ram (MB): 25450
  2014-04-17 05:06:38.605 2137 AUDIT nova.compute.resource_tracker [-] Free disk (GB): 207
  2014-04-17 05:06:38.606 2137 AUDIT nova.compute.resource_tracker [-] Free VCPUS: 5

  
  When I tried to migrate a VM from compute 1 to compute 2 I got the next error due to a missing ssh cert setup:

  2014-04-17 05:06:38.636 2137 INFO nova.compute.resource_tracker [-] Compute_service record updated for mz216srv014.mds.t-mobile.net:mz216srv014.mds.t-mobile.net
  2014-04-17 15:29:57.239 2137 ERROR nova.compute.manager [req-74924eff-3043-473a-a38a-7341945826fc 90aec6fcee154bb3896301a8f98077ac 9053ec1b088240d7a0844e479343097d] [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Setting instance vm_state to ERROR
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Traceback (most recent call last):
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 5536, in _error_out_instance_on_exception
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]     yield
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 3438, in resize_instance
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]     block_device_info)
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 4883, in migrate_disk_and_power_off
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]     utils.execute('ssh', dest, 'mkdir', '-p', inst_base)
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]   File "/usr/lib/python2.6/site-packages/nova/utils.py", line 164, in execute
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]     return processutils.execute(*cmd, **kwargs)
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]   File "/usr/lib/python2.6/site-packages/nova/openstack/common/processutils.py", line 193, in execute
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735]     cmd=' '.join(cmd))
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] ProcessExecutionError: Unexpected error while running command.
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Command: ssh 192.168.119.15 mkdir -p /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Exit code: 255
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Stdout: ''
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Stderr: 'Host key verification failed.\r\n'
  2014-04-17 15:29:57.239 2137 TRACE nova.compute.manager [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] 
  2014-04-17 15:29:57.625 2137 ERROR oslo.messaging.rpc.dispatcher [-] Exception during message handling: Unexpected error while running command.
  Command: ssh 192.168.119.15 mkdir -p /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735
  Exit code: 255
  Stdout: ''
  Stderr: 'Host key verification failed.\r\n'
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/exception.py", line 88, in wrapped
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     payload)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/exception.py", line 71, in wrapped
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 280, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     pass
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 266, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 333, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     function(self, context, *args, **kwargs)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 254, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     break
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 235, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 309, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     e, sys.exc_info())
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 296, in decorated_function
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 3438, in resize_instance
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     block_device_info)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 4883, in migrate_disk_and_power_off
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     utils.execute('ssh', dest, 'mkdir', '-p', inst_base)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/utils.py", line 164, in execute
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     return processutils.execute(*cmd, **kwargs)
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.6/site-packages/nova/openstack/common/processutils.py", line 193, in execute
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher     cmd=' '.join(cmd))
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher ProcessExecutionError: Unexpected error while running command.
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher Command: ssh 192.168.119.15 mkdir -p /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher Exit code: 255
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher Stdout: ''
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher Stderr: 'Host key verification failed.\r\n'
  2014-04-17 15:29:57.625 2137 TRACE oslo.messaging.rpc.dispatcher 
  2014-04-17 15:29:57.638 2137 ERROR oslo.messaging._drivers.common [-] Returning exception Unexpected error while running command.
  Command: ssh 192.168.119.15 mkdir -p /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735
  Exit code: 255
  Stdout: ''
  Stderr: 'Host key verification failed.\r\n' to caller
  2014-04-17 15:29:57.638 2137 ERROR oslo.messaging._drivers.common [-] ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply\n    incoming.message))\n', '  File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch\n    return self._do_dispatch(endpoint, method, ctxt, args)\n', '  File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch\n    result = getattr(endpoint, method)(ctxt, **new_args)\n', '  File "/usr/lib/python2.6/site-packages/nova/exception.py", line 88, in wrapped\n    payload)\n', '  File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.6/site-packages/nova/exception.py", line 71, in wrapped\n    return f(self, context, *args, **kw)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 280, in decorated_function\n    pass\n', '  File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 266, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 333, in decorated_function\n    function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 254, in decorated_function\n    break\n', '  File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 235, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 309, in decorated_function\n    e, sys.exc_info())\n', '  File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 296, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 3438, in resize_instance\n    block_device_info)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 4883, in migrate_disk_and_power_off\n    utils.execute(\'ssh\', dest, \'mkdir\', \'-p\', inst_base)\n', '  File "/usr/lib/python2.6/site-packages/nova/utils.py", line 164, in execute\n    return processutils.execute(*cmd, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/openstack/common/processutils.py", line 193, in execute\n    cmd=\' \'.join(cmd))\n', "ProcessExecutionError: Unexpected error while running command.\nCommand: ssh 192.168.119.15 mkdir -p /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735\nExit code: 255\nStdout: ''\nStderr: 'Host key verification failed.\\r\\n'\n"]

  
  The only option I had after this error was to terminate the VM, that was processed succesfully:

  2014-04-17 15:30:22.354 2137 AUDIT nova.compute.manager [req-4ebca1b2-7084-402a-ae4a-f6f9a0702de7 90aec6fcee154bb3896301a8f98077ac 9053ec1b088240d7a0844e479343097d] [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Terminating instance
  2014-04-17 15:30:23.176 2137 INFO nova.virt.libvirt.driver [-] [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Instance destroyed successfully.
  2014-04-17 15:30:23.840 2137 INFO nova.virt.libvirt.driver [req-4ebca1b2-7084-402a-ae4a-f6f9a0702de7 90aec6fcee154bb3896301a8f98077ac 9053ec1b088240d7a0844e479343097d] [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Deleting instance files /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735
  2014-04-17 15:30:23.853 2137 INFO nova.virt.libvirt.driver [req-4ebca1b2-7084-402a-ae4a-f6f9a0702de7 90aec6fcee154bb3896301a8f98077ac 9053ec1b088240d7a0844e479343097d] [instance: c852434a-5172-4eb5-ad6d-9c7dbaa35735] Deletion of /var/lib/nova/instances/c852434a-5172-4eb5-ad6d-9c7dbaa35735 complete

  
  The status of the hypervisor is invalid as now is reporting 3 used VCPUs instead of only 2:

  [root@mz216srv013 ceilometer(openrc admin)]# nova hypervisor-list
  +----+------------------------------+
  | ID | Hypervisor hostname          |
  +----+------------------------------+
  | 1  | mz216srv014 |
  | 2  | mz216srv015 |
  +----+------------------------------+
  [root@mz216srv013 ceilometer(openrc admin)]# nova hypervisor-show mz216srv014
  +---------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------+
  | Property                  | Value                                                                                                                                         |
  +---------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------+
  | cpu_info_arch             | x86_64                                                                                                                                        |
  | cpu_info_features         | ["osxsave", "xsave", "dca", "pdcm", "xtpr", "tm2", "est", "vmx", "ds_cpl", "monitor", "dtes64", "pbe", "tm", "ht", "ss", "acpi", "ds", "vme"] |
  | cpu_info_model            | Penryn                                                                                                                                        |
  | cpu_info_topology_cores   | 4                                                                                                                                             |
  | cpu_info_topology_sockets | 2                                                                                                                                             |
  | cpu_info_topology_threads | 1                                                                                                                                             |
  | cpu_info_vendor           | Intel                                                                                                                                         |
  | current_workload          | 0                                                                                                                                             |
  | disk_available_least      | 190                                                                                                                                           |
  | free_disk_gb              | 207                                                                                                                                           |
  | free_ram_mb               | 25450                                                                                                                                         |
  | host_ip                   | 192.168.119.14                                                                                                                                |
  | hypervisor_hostname       | mz216srv014                                                                                                                  |
  | hypervisor_type           | QEMU                                                                                                                                          |
  | hypervisor_version        | 12001                                                                                                                                         |
  | id                        | 1                                                                                                                                             |
  | local_gb                  | 267                                                                                                                                           |
  | local_gb_used             | 60                                                                                                                                            |
  | memory_mb                 | 32106                                                                                                                                         |
  | memory_mb_used            | 6656                                                                                                                                          |
  | running_vms               | 3                                                                                                                                             |
  | service_host              | mz216srv014                                                                                                                  |
  | service_id                | 5                                                                                                                                             |
  | vcpus                     | 8                                                                                                                                             |
  | vcpus_used                | 3                                                                                                                                             |
  +---------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------+


  [root@mz216srv013 ceilometer(openrc admin)]# nova hypervisor-servers mz216srv014
  +--------------------------------------+-------------------+---------------+------------------------------+
  | ID                                   | Name              | Hypervisor ID | Hypervisor Hostname          |
  +--------------------------------------+-------------------+---------------+------------------------------+
  | ce15230b-233c-43eb-b669-bc1cc5fdf751 | instance-00000007 | 1             | mz216srv014 |
  | e7fc4f47-c1a6-464e-8ac4-ddcf2e0b9ba9 | instance-00000008 | 1             | mz216srv014 |
  +--------------------------------------+-------------------+---------------+------------------------------+


  [root@mz216srv013 ceilometer(openrc admin)]# nova show ce15230b-233c-43eb-b669-bc1cc5fdf751
  +--------------------------------------+---------------------------------------------------------------------+
  | Property                             | Value                                                               |
  +--------------------------------------+---------------------------------------------------------------------+
  | OS-DCF:diskConfig                    | AUTO                                                                |
  | OS-EXT-AZ:availability_zone          | nova                                                                |
  | OS-EXT-SRV-ATTR:host                 | mz216srv014                                        |
  | OS-EXT-SRV-ATTR:hypervisor_hostname  | mz216srv014                                        |
  | OS-EXT-SRV-ATTR:instance_name        | instance-00000007                                                   |
  | OS-EXT-STS:power_state               | 1                                                                   |
  | OS-EXT-STS:task_state                | -                                                                   |
  | OS-EXT-STS:vm_state                  | active                                                              |
  | OS-SRV-USG:launched_at               | 2014-04-16T15:48:10.000000                                          |
  | OS-SRV-USG:terminated_at             | -                                                                   |
  | accessIPv4                           |                                                                     |
  | accessIPv6                           |                                                                     |
  | config_drive                         |                                                                     |
  | created                              | 2014-04-16T14:48:17Z                                                |
  | demo-net network                     | 192.1.1.4, 192.168.121.102                                          |
  | flavor                               | m1.small (2)                                                        |
  | hostId                               | 7ec798860994fe15b8feb629a91d479835b6676fd41307f4392288ee            |
  | id                                   | ce15230b-233c-43eb-b669-bc1cc5fdf751                                |
  | image                                | centos-6.5-20140117.0.x86_64 (15274978-d3b4-4cae-8894-3f1ee8cad864) |
  | key_name                             | kp-demo                                                             |
  | metadata                             | {}                                                                  |
  | name                                 | centos-demo2                                                        |
  | os-extended-volumes:volumes_attached | []                                                                  |
  | progress                             | 0                                                                   |
  | security_groups                      | demo                                                                |
  | status                               | ACTIVE                                                              |
  | tenant_id                            | 0545f88dc3d34f7e91da510a0199e4a3                                    |
  | updated                              | 2014-04-17T00:44:23Z                                                |
  | user_id                              | aa9837d2815e471b844fded4fe7d4271                                    |
  +--------------------------------------+---------------------------------------------------------------------+


  [root@mz216srv013 ceilometer(openrc admin)]# nova show e7fc4f47-c1a6-464e-8ac4-ddcf2e0b9ba9
  +--------------------------------------+---------------------------------------------------------------------+
  | Property                             | Value                                                               |
  +--------------------------------------+---------------------------------------------------------------------+
  | OS-DCF:diskConfig                    | AUTO                                                                |
  | OS-EXT-AZ:availability_zone          | nova                                                                |
  | OS-EXT-SRV-ATTR:host                 | mz216srv014                                        |
  | OS-EXT-SRV-ATTR:hypervisor_hostname  | mz216srv014                                        |
  | OS-EXT-SRV-ATTR:instance_name        | instance-00000008                                                   |
  | OS-EXT-STS:power_state               | 1                                                                   |
  | OS-EXT-STS:task_state                | -                                                                   |
  | OS-EXT-STS:vm_state                  | active                                                              |
  | OS-SRV-USG:launched_at               | 2014-04-16T16:23:12.000000                                          |
  | OS-SRV-USG:terminated_at             | -                                                                   |
  | accessIPv4                           |                                                                     |
  | accessIPv6                           |                                                                     |
  | config_drive                         |                                                                     |
  | created                              | 2014-04-16T17:24:45Z                                                |
  | demo-net network                     | 192.1.1.5                                                           |
  | demo-net-2 network                   | 192.1.2.3, 192.168.121.101                                          |
  | flavor                               | m1.small (2)                                                        |
  | hostId                               | 7ec798860994fe15b8feb629a91d479835b6676fd41307f4392288ee            |
  | id                                   | e7fc4f47-c1a6-464e-8ac4-ddcf2e0b9ba9                                |
  | image                                | centos-6.5-20140117.0.x86_64 (15274978-d3b4-4cae-8894-3f1ee8cad864) |
  | key_name                             | kp-demo                                                             |
  | metadata                             | {}                                                                  |
  | name                                 | centos-demo1                                                        |
  | os-extended-volumes:volumes_attached | []                                                                  |
  | progress                             | 0                                                                   |
  | security_groups                      | demo, demo                                                          |
  | status                               | ACTIVE                                                              |
  | tenant_id                            | 0545f88dc3d34f7e91da510a0199e4a3                                    |
  | updated                              | 2014-04-17T00:44:15Z                                                |
  | user_id                              | aa9837d2815e471b844fded4fe7d4271                                    |
  +--------------------------------------+---------------------------------------------------------------------+


  [root@mz216srv013 ceilometer(openrc admin)]# nova flavor-show m1.small
  +----------------------------+----------+
  | Property                   | Value    |
  +----------------------------+----------+
  | OS-FLV-DISABLED:disabled   | False    |
  | OS-FLV-EXT-DATA:ephemeral  | 0        |
  | disk                       | 20       |
  | extra_specs                | {}       |
  | id                         | 2        |
  | name                       | m1.small |
  | os-flavor-access:is_public | True     |
  | ram                        | 2048     |
  | rxtx_factor                | 1.0      |
  | swap                       |          |
  | vcpus                      | 1        |
  +----------------------------+----------+

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References