[Bug 1103195] Re: MAAS WebUI crashes when installing maas-region-controller only

[Andres Rodriguez]

** Description changed:

  MAAS WebUI crashes when isntalling maas-region-controller only:
  
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3] mod_wsgi (pid=7256): Target WSGI script '/usr/share/maas/wsgi.py' cannot be loaded as Python module.
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3] mod_wsgi (pid=7256): Exception occurred processing WSGI script '/usr/share/maas/wsgi.py'.
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3] Traceback (most recent call last):
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/share/maas/wsgi.py", line 30, in <module>
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     start_up()
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/dist-packages/maasserver/start_up.py", line 59, in start_up
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     inner_start_up()
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/dist-packages/maasserver/start_up.py", line 84, in inner_start_up
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     NodeGroup.objects.ensure_master()
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/dist-packages/maasserver/models/nodegroup.py", line 95, in ensure_master
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     'master', 'master', '127.0.0.1', dhcp_key=generate_omapi_key(),
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/dist-packages/provisioningserver/omshell.py", line 95, in generate_omapi_key
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     key = run_repeated_keygen(tmpdir)
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/dist-packages/provisioningserver/omshell.py", line 56, in run_repeated_keygen
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     key_id = call_dnssec_keygen(tmpdir)
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/dist-packages/provisioningserver/omshell.py", line 45, in call_dnssec_keygen
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     env=env)
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/subprocess.py", line 537, in check_output
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     process = Popen(stdout=PIPE, *popenargs, **kwargs)
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/subprocess.py", line 680, in __init__
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     errread, errwrite)
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]   File "/usr/lib/python2.7/subprocess.py", line 1277, in _execute_child
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3]     raise child_exception
  [Tue Jan 22 16:49:58 2013] [error] [client 192.168.123.3] OSError: [Errno 2] No such file or directory
  
- 
  Installing maas-dns fixes the problem. However, this should not happen.
+ This seems to be an issue of MAAS region controller trying to start DNS
+ service when the cluster controller is not installed along with the
+ region even when it has not being configured to do so.

** Also affects: maas
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1103195

Title:
  MAAS WebUI crashes when installing maas-region-controller only

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