** Description changed:
[Impact]
MAAS fails to start/stop virtual nodes when using virsh. This is because MAAS
lacks permissions to run virsh.
[Solution]
The solution is to run virsh with sudo, as well as allowing the 'maas' user
to run 'virsh' in the sudoers file.
[Test Case]
To reproduce do the following:
1. install MAAS and configure local KVM nodes with it.
2. Confiugure the power pameters in MAAS.
3. Deploy a node.
Without the fix the node will be never turned on/off and
/var/log/maas/maas.log will show:
+ [Regression Potential]
+ Minimal. This has been tested in our labs. And this actually fixes something
that is currently broken and won't work out of the box. The MAAS team and
Server team are dedicated to perform any corrective actions in the events of a
regression.
+
[2013-04-23 11:20:21,482: ERROR/MainProcess] Task
provisioningserver.tasks.power_off[926784f3-d90d-4277-bbfc-0471b2c82e80] raised
exception: UnpickleableExceptionWrapper('provisioningserver.power.poweraction',
'PowerActionFail', (), 'PowerActionFail()')
Traceback (most recent call last):
- File "/usr/lib/python2.7/dist-packages/celery/execute/trace.py", line 181,
in trace_task
- R = retval = fun(*args, **kwargs)
- File "/usr/lib/python2.7/dist-packages/provisioningserver/tasks.py", line
146, in power_off
- issue_power_action(power_type, 'off', **kwargs)
- File "/usr/lib/python2.7/dist-packages/provisioningserver/tasks.py", line
126, in issue_power_action
- pa.execute(**kwargs)
- File
"/usr/lib/python2.7/dist-packages/provisioningserver/power/poweraction.py",
line 138, in execute
- self.run_shell(rendered)
- File
"/usr/lib/python2.7/dist-packages/provisioningserver/power/poweraction.py",
line 126, in run_shell
- raise PowerActionFail(self, e)
+ File "/usr/lib/python2.7/dist-packages/celery/execute/trace.py", line 181,
in trace_task
+ R = retval = fun(*args, **kwargs)
+ File "/usr/lib/python2.7/dist-packages/provisioningserver/tasks.py", line
146, in power_off
+ issue_power_action(power_type, 'off', **kwargs)
+ File "/usr/lib/python2.7/dist-packages/provisioningserver/tasks.py", line
126, in issue_power_action
+ pa.execute(**kwargs)
+ File
"/usr/lib/python2.7/dist-packages/provisioningserver/power/poweraction.py",
line 138, in execute
+ self.run_shell(rendered)
+ File
"/usr/lib/python2.7/dist-packages/provisioningserver/power/poweraction.py",
line 126, in run_shell
+ raise PowerActionFail(self, e)
PowerActionFail: PowerActionFail()
With the fix, nodes will be turned on/off successfully.
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https://bugs.launchpad.net/bugs/1171988
Title:
MAAS fails to use virsh when managing virtual nodes
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