The first problem has been solved by synchronizing the 2 nodes. But, I could not find a solution to the second one -- nova-compute does not want to start
2012/11/15 Afef MDHAFFAR <afef.mdhaf...@gmail.com> > Hi all, > > I tried to add a third compute node to a running openstack platform > (composed of a head node and a compute node). > I use Ubuntu 12.04 + XCP + folsom (stable release). And, I use devstack to > install the compute node. > The first problem is that the 2nd (new) compute node is not able to see > that the head node nova services are enabled, however it is still able to > detect that nova services of the first compute node are running and > available. > nova-manage service list > 2012-11-15 20:02:46 DEBUG nova.utils > [req-44c68f9f-b9f4-498b-a081-c0273e23e05f None None] backend <module > 'nova.db.sqlalchemy.api' from '/opt/stack/nova/nova/db/sqlalchemy/api.pyc'> > from (pid=25406) __get_backend /opt/stack/nova/nova/utils.py:502 > Binary Host Zone > Status State Updated_At > nova-consoleauth DevStackOSDomU nova > enabled XXX 2012-11-15 20:01:37 > nova-cert computeDomU01 nova > enabled :-) 2012-11-15 20:02:30 > nova-network computeDomU01 nova > enabled :-) 2012-11-15 20:02:33 > nova-scheduler computeDomU01 nova > enabled :-) 2012-11-15 20:02:33 > nova-compute computeDomU01 nova > enabled :-) 2012-11-15 20:02:30 > nova-network DevStackOSDomU nova > enabled XXX 2012-11-15 20:01:40 > nova-scheduler DevStackOSDomU nova > enabled XXX 2012-11-15 20:01:40 > nova-cert DevStackOSDomU nova > enabled XXX 2012-11-15 20:01:35 > nova-compute DevStackOSDomU nova > enabled XXX 2012-11-15 20:01:40 > nova-network computeDomU02 nova > enabled :-) 2012-11-15 20:02:43 > nova-compute computeDomU02 nova > enabled XXX None > nova-scheduler computeDomU02 nova > enabled :-) 2012-11-15 20:02:43 > nova-cert computeDomU02 nova > enabled :-) 2012-11-15 20:02:43 > > The nova-services are of course running on the head node. Actually, > launching "nova-manage service list" on the head node or the first compute > node returns the following output: > nova-manage service list > 2012-11-15 20:05:08 DEBUG nova.utils > [req-47839159-dc05-4947-a070-66b9f0db36e7 None None] backend <module > 'nova.db.sqlalchemy.api' from '/opt/stack/nova/nova/db/sqlalchemy/api.pyc'> > from (pid=6912) __get_backend /opt/stack/nova/nova/utils.py:502 > Binary Host Zone > Status State Updated_At > nova-consoleauth DevStackOSDomU nova > enabled :-) 2012-11-15 20:04:10 > nova-cert computeDomU01 nova > enabled :-) 2012-11-15 20:05:03 > nova-network computeDomU01 nova > enabled :-) 2012-11-15 20:05:07 > nova-scheduler computeDomU01 nova > enabled :-) 2012-11-15 20:05:07 > nova-compute computeDomU01 nova > enabled :-) 2012-11-15 20:05:03 > nova-network DevStackOSDomU nova > enabled :-) 2012-11-15 20:04:15 > nova-scheduler DevStackOSDomU nova > enabled :-) 2012-11-15 20:04:15 > nova-cert DevStackOSDomU nova > enabled :-) 2012-11-15 20:04:09 > nova-compute DevStackOSDomU nova > enabled :-) 2012-11-15 20:04:15 > nova-network computeDomU02 nova > enabled :-) 2012-11-15 20:05:16 > nova-compute computeDomU02 nova > enabled XXX None > nova-scheduler computeDomU02 nova > enabled :-) 2012-11-15 20:05:16 > nova-cert computeDomU02 nova > enabled :-) 2012-11-15 20:05:16 > > And the 2nd problem is the fact that nova-compute does not start on the > new compute node, and returns this error: > 2012-11-15 19:57:05 DEBUG nova.virt.xenapi.driver [-] Got exception: > ['XENAPI_MISSING_PLUGIN', 'xenhost'] from (pid=25140) > _unwrap_plugin_exceptions /opt/stack/nova/nova/virt/xenapi/driver.py:754 > 2012-11-15 19:57:05 ERROR nova.virt.xenapi.host [-] The call to host_data > returned an error: ['XENAPI_MISSING_PLUGIN', 'xenhost']. > 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 192, in main > result = function(*args, **kwargs) > File "/opt/stack/nova/nova/service.py", line 132, in run_server > server.start() > File "/opt/stack/nova/nova/service.py", line 410, in start > self.manager.update_available_resource(ctxt) > File "/opt/stack/nova/nova/compute/manager.py", line 2785, in > update_available_resource > self.resource_tracker.update_available_resource(context) > File "/opt/stack/nova/nova/utils.py", line 760, in inner > retval = f(*args, **kwargs) > File "/opt/stack/nova/nova/compute/resource_tracker.py", line 366, in > update_available_resource > resources = self.driver.get_available_resource() > File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 411, in > get_available_resource > host_stats = self.get_host_stats(refresh=True) > File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 573, in > get_host_stats > return self.host_state.get_host_stats(refresh=refresh) > File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 159, in > host_state > self._host_state = host.HostState(self._session) > File "/opt/stack/nova/nova/virt/xenapi/host.py", line 134, in __init__ > self.update_status() > File "/opt/stack/nova/nova/virt/xenapi/host.py", line 162, in > update_status > data["disk_total"] = total > TypeError: 'str' object does not support item assignment > Removing descriptor: 5 > 2012-11-15 19:57:05 CRITICAL nova [-] 'str' object does not support item > assignment > 2012-11-15 19:57:05 TRACE nova Traceback (most recent call last): > 2012-11-15 19:57:05 TRACE nova File "/usr/local/bin/nova-compute", line > 7, in <module> > 2012-11-15 19:57:05 TRACE nova execfile(__file__) > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/bin/nova-compute", > line 48, in <module> > 2012-11-15 19:57:05 TRACE nova service.wait() > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/nova/service.py", > line 659, in wait > 2012-11-15 19:57:05 TRACE nova _launcher.wait() > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/nova/service.py", > line 192, in wait > 2012-11-15 19:57:05 TRACE nova super(ServiceLauncher, self).wait() > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/nova/service.py", > line 162, in wait > 2012-11-15 19:57:05 TRACE nova service.wait() > 2012-11-15 19:57:05 TRACE nova File > "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 166, > in wait > 2012-11-15 19:57:05 TRACE nova return self._exit_event.wait() > 2012-11-15 19:57:05 TRACE nova File > "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 116, in > wait > 2012-11-15 19:57:05 TRACE nova return hubs.get_hub().switch() > 2012-11-15 19:57:05 TRACE nova File > "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 177, in > switch > 2012-11-15 19:57:05 TRACE nova return self.greenlet.switch() > 2012-11-15 19:57:05 TRACE nova File > "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 192, > in main > 2012-11-15 19:57:05 TRACE nova result = function(*args, **kwargs) > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/nova/service.py", > line 132, in run_server > 2012-11-15 19:57:05 TRACE nova server.start() > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/nova/service.py", > line 410, in start > 2012-11-15 19:57:05 TRACE nova > self.manager.update_available_resource(ctxt) > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/compute/manager.py", line 2785, in > update_available_resource > 2012-11-15 19:57:05 TRACE nova > self.resource_tracker.update_available_resource(context) > 2012-11-15 19:57:05 TRACE nova File "/opt/stack/nova/nova/utils.py", > line 760, in inner > 2012-11-15 19:57:05 TRACE nova retval = f(*args, **kwargs) > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/compute/resource_tracker.py", line 366, in > update_available_resource > 2012-11-15 19:57:05 TRACE nova resources = > self.driver.get_available_resource() > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/virt/xenapi/driver.py", line 411, in > get_available_resource > 2012-11-15 19:57:05 TRACE nova host_stats = > self.get_host_stats(refresh=True) > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/virt/xenapi/driver.py", line 573, in get_host_stats > 2012-11-15 19:57:05 TRACE nova return > self.host_state.get_host_stats(refresh=refresh) > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/virt/xenapi/driver.py", line 159, in host_state > 2012-11-15 19:57:05 TRACE nova self._host_state = > host.HostState(self._session) > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/virt/xenapi/host.py", line 134, in __init__ > 2012-11-15 19:57:05 TRACE nova self.update_status() > 2012-11-15 19:57:05 TRACE nova File > "/opt/stack/nova/nova/virt/xenapi/host.py", line 162, in update_status > 2012-11-15 19:57:05 TRACE nova data["disk_total"] = total > 2012-11-15 19:57:05 TRACE nova TypeError: 'str' object does not support > item assignment > 2012-11-15 19:57:05 TRACE nova > > > Any ideas how to solve this problem?? > > Thank you, > Afef > > > -- Afef MDHAFFAR http://www.redcad.org/members/mdhaffar/
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