Open Stack

Hi all,

I am using devstack on Ubuntu 12.04 server with kvm hypervisor. I upgraded
libvirt from 0.9.8 to 1.2.1. Due to which I can not create instance and
hypervisor is not getting connected.

waqas at server2:~$ nova hypervisor-list
+----+---------------------+
| ID | Hypervisor hostname |
+----+---------------------+
+----+---------------------+

Looking in the screens, I found following errors in n-cpu screen.

2014-02-19 03:08:31.165 DEBUG nova.openstack.common.service [-]
********************************************************************************
from (pid=23386) log_opt_values
/opt/stack/oslo.config/oslo/config/cfg.py:1925
2014-02-19 03:08:31.166 AUDIT nova.service [-] Starting compute node
(version 2014.1)
2014-02-19 03:08:31.167 DEBUG nova.virt.libvirt.driver [-] Connecting to
libvirt: qemu:///system from (pid=23386) _get_new_connection
/opt/stack/nova/nova/virt/libvirt/driver.py:647
libvirt: XML-RPC error : Failed to connect socket to
'/var/run/libvirt/libvirt-sock': Permission denied
2014-02-19 03:08:31.173 ERROR nova.virt.libvirt.driver [-] Connection to
libvirt failed: Failed to connect socket to
'/var/run/libvirt/libvirt-sock': Permission denied
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver Traceback (most
recent call last):
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 768, in _connect
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver
libvirt.openAuth, uri, auth, flags)
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver   File
"/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in
proxy_call
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver     rv =
execute(f,*args,**kwargs)
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver   File
"/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in
tworker
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver     rv =
meth(*args,**kwargs)
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver   File
"/usr/lib/python2.7/dist-packages/libvirt.py", line 102, in openAuth
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver     if ret is
None:raise libvirtError('virConnectOpenAuth() failed')
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver libvirtError: Failed
to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied
2014-02-19 03:08:31.173 TRACE nova.virt.libvirt.driver
2014-02-19 03:08:31.178 DEBUG oslo.messaging._drivers.amqpdriver [-] MSG_ID
is f881e9cac9b04702a521c31bb3542511 from (pid=23386) _send
/opt/stack/oslo.messaging/oslo/messaging/_drivers/amqpdriver.py:363
2014-02-19 03:08:31.178 DEBUG oslo.messaging._drivers.amqp [-] UNIQUE_ID is
d9eb144992654fb6b76636b2e7289517. from (pid=23386) _add_unique_id
/opt/stack/oslo.messaging/oslo/messaging/_drivers/amqp.py:333
2014-02-19 03:08:31.202 WARNING nova.virt.libvirt.driver [-] Cannot update
service status on host: server2,since it is not registered.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/poll.py", line
97, in wait
    readers.get(fileno, noop).cb(fileno)
  File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py",
line 194, in main
    result = function(*args, **kwargs)
  File "/opt/stack/nova/nova/openstack/common/service.py", line 480, in
run_service
    service.start()
  File "/opt/stack/nova/nova/service.py", line 177, in start
    self.manager.init_host()
  File "/opt/stack/nova/nova/compute/manager.py", line 811, in init_host
    self.driver.init_host(host=self.host)
  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 631, in init_host
    self._do_quality_warnings()
  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 619, in
_do_quality_warnings
    caps = self.get_host_capabilities()
  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2788, in
get_host_capabilities
    xmlstr = self._conn.getCapabilities()
  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 696, in
_get_connection
    wrapped_conn = self._get_new_connection()
  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 651, in
_get_new_connection
    wrapped_conn = self._connect(self.uri(), self.read_only)
  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 777, in _connect
    raise exception.HypervisorUnavailable(host=CONF.host)
HypervisorUnavailable: Connection to the hypervisor is broken on host:
server2
Removing descriptor: 3
2014-02-19 03:08:31.204 ERROR nova.openstack.common.threadgroup [-]
Connection to the hypervisor is broken on host: server2
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup Traceback
(most recent call last):
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/openstack/common/threadgroup.py", line 117, in wait
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     x.wait()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/openstack/common/threadgroup.py", line 49, in wait
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     return
self.thread.wait()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 168,
in wait
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     return
self._exit_event.wait()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 116, in
wait
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     return
hubs.get_hub().switch()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 187, in
switch
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     return
self.greenlet.switch()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 194,
in main
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     result
= function(*args, **kwargs)
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/openstack/common/service.py", line 480, in run_service
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
service.start()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/service.py", line 177, in start
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
self.manager.init_host()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/compute/manager.py", line 811, in init_host
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
self.driver.init_host(host=self.host)
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 631, in init_host
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
self._do_quality_warnings()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 619, in
_do_quality_warnings
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     caps =
self.get_host_capabilities()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 2788, in
get_host_capabilities
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     xmlstr
= self._conn.getCapabilities()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 696, in _get_connection
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
wrapped_conn = self._get_new_connection()
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 651, in
_get_new_connection
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
wrapped_conn = self._connect(self.uri(), self.read_only)
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup   File
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 777, in _connect
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup     raise
exception.HypervisorUnavailable(host=CONF.host)
2014-02-19 03:08:31.204 TRACE nova.openstack.common.threadgroup
HypervisorUnavailable: Connection to the hypervisor is broken on host:
server2

Any help or suggestion would be a great favour.
Thanks,
-- 

Waqas Riaz
Software Development Engineer
xFlow Research <http://www.xflowresearch.com/>
+92-332-6396672 (GMT +5)
Skype: waqas,riaz

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