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[Bug 1168610] Re: nova-compute fails to start if is_power_on raises exception

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Joe Gordon <1168610@xxxxxxxxxxxxxxxxxx>
Date: Thu, 10 Jul 2014 00:08:14 -0000
Reply-to: Bug 1168610 <1168610@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
since we are in the process of deprecating and removing nova baremetal
and the patch is abandoned, closing this bug.

** Changed in: nova
       Status: In Progress => Won't Fix

** Changed in: nova
     Assignee: Tim Miller (tim-miller-0) => (unassigned)

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Title:
  nova-compute fails to start if is_power_on raises exception

Status in OpenStack Compute (Nova):
  Won't Fix

Bug description:
  During startup of nova-compute, if virtual_power_driver is_power_on()
  raises an exception, it will prevent nova-compute from starting. This
  can happen when a compute instance exists in the database but the SSH
  credentials that vpd uses are wrong.

  I think a solution is for vpd to convert
  exception.PowerVMConnectionFailed into an error and log it.

  Here is a trace of this error:

  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/service.py", line 147, in run_server
  2013-04-13 06:52:02,213.213 4164 TRACE nova     server.start()
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/service.py", line 429, in start
  2013-04-13 06:52:02,213.213 4164 TRACE nova     self.manager.init_host()
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 630, in init_host
  2013-04-13 06:52:02,213.213 4164 TRACE nova     self._init_instance(context, instance)
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 539, in _init_instance
  2013-04-13 06:52:02,213.213 4164 TRACE nova     drv_state = self._get_power_state(context, instance)
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 649, in _get_power_state
  2013-04-13 06:52:02,213.213 4164 TRACE nova     return self.driver.get_info(instance)["state"]
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/baremetal/driver.py", line 363, in get_info
  2013-04-13 06:52:02,213.213 4164 TRACE nova     if pm.is_power_on():
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/baremetal/virtual_power_driver.py", line 198, in is_power_on
  2013-04-13 06:52:02,213.213 4164 TRACE nova     if not self._check_for_node():
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/baremetal/virtual_power_driver.py", line 147, in _check_for_node
  2013-04-13 06:52:02,213.213 4164 TRACE nova     full_node_list = self._get_full_node_list()
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/baremetal/virtual_power_driver.py", line 141, in _get_full_node_list
  2013-04-13 06:52:02,213.213 4164 TRACE nova     full_list = self._run_command(cmd)
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/baremetal/virtual_power_driver.py", line 225, in _run_command
  2013-04-13 06:52:02,213.213 4164 TRACE nova     self._set_connection()
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/baremetal/virtual_power_driver.py", line 136, in _set_connection
  2013-04-13 06:52:02,213.213 4164 TRACE nova     self._connection = connection.ssh_connect(self.connection_data)
  2013-04-13 06:52:02,213.213 4164 TRACE nova   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/powervm/common.py", line 62, in ssh_connect
  2013-04-13 06:52:02,213.213 4164 TRACE nova     raise exception.PowerVMConnectionFailed()
  2013-04-13 06:52:02,213.213 4164 TRACE nova PowerVMConnectionFailed: Connection to PowerVM manager failed
  2013-04-13 06:52:02,213.213 4164 TRACE nova 
  2013-04-13 06:52:02,648.648 4217 INFO nova.manager [-] Skipping periodic task _periodic_update_dns because its interval is negative
  2013-04-13 06:52:02,705.705 4217 INFO nova.virt.driver [-] Loading compute driver 'baremetal.driver.BareMetalDriver'
  2013-04-13 06:52:02,754.754 INFO nova.openstack.common.rpc.common [req-235af7f1-4c57-42b8-8cc7-cbdd1327f12a None None] Connected to AMQP server on 127.0.0.1:5672
  2013-04-13 06:52:02,839.839 4217 AUDIT nova.service [-] Starting compute node (version 2013.2)
  2013-04-13 06:52:03,176.176 ERROR nova.compute.manager [req-e06f7f34-a2df-44f2-b3f2-ac299d4087d6 None None] Instance bmtest found in the hypervisor, but not in the database

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