VNC (webvirtmgr on another host than kvm)

[kokel]

Hello,

I have webvirtmgr running on another host than the kvm hypervisor. What do I have to do on the hypervisor to get the vnc part working?

Regards, Kokel

[retspen]

Hello,

On hypervisor uncoment line in file /etc/libvirt/qemu.comf:
vnc_listen = "0.0.0.0"

[kokel]

Yes, I already have this and restarted libvirt without success. If I want to connect to a console I get this message:

Shuttoff VM and set VNC password

If I do this via webvirtmgr I get this error:
Oops!
500 Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete you request.

Running webvirtmgr in debug mode I get this:

[31/Oct/2013 21:03:03] "POST /instance/1/S1-DNS/ HTTP/1.1" 500 1933

[retspen]

Change in file settings.py:
DEBUG = False to DEBUG = True

What show ? And you create VM on WebVirtMgr?

[cjsoftuk]

@retspen - Just ran into this one (actually looking at the right branch now).

Environment:

Request Method: POST
Request URL: http://vmm/instance/1/jcrmplus_stage/

Django Version: 1.5.4
Python Version: 2.7.3
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'instance',
'gunicorn']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')

Traceback:
File "/opt/webvirtmgr/environment/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

1.                     response = callback(request, _callback_args, *_callback_kwargs)
   

   File "/opt/webvirtmgr/src/instance/views.py" in instance

2.                     vnc_pass = Instance.objects.get(vname=vname)
   

   File "/opt/webvirtmgr/environment/local/lib/python2.7/site-packages/django/db/models/manager.py" in get

3.     return self.get_query_set().get(_args, *_kwargs)
   

   File "/opt/webvirtmgr/environment/local/lib/python2.7/site-packages/django/db/models/query.py" in get

4.             self.model._meta.object_name)
   

Exception Type: DoesNotExist at /instance/1/jcrmplus_stage/
Exception Value: Instance matching query does not exist.

Hope this helps?

[retspen]

Undefine VM without delete HDD and create custom with exist hdd image. (Copy MAC and change if need)

[cjsoftuk]

@retspen - Thanks - looks like this is an artefact of "upgrading" from master to develop branch....

[kokel]

I forgot to mention that I added a kvm hypervisor with a lot of existing vms all created manually on cli.
If I define a new vm via webvirtmgr I can successfully connect to console.

Error:

Internal Server Error: /instance/1/OLD-SECURITYTUBE/
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 115, in get_response
response = callback(request, _callback_args, *_callback_kwargs)
File "/var/www/webvirtmgr/instance/views.py", line 194, in instance
vnc_pass = Instance.objects.get(vname=vname)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/manager.py", line 143, in get
return self.get_query_set().get(_args, *_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 404, in get
self.model._meta.object_name)
DoesNotExist: Instance matching query does not exist.
[02/Nov/2013 00:09:24] "POST /instance/1/OLD-SECURITYTUBE/ HTTP/1.1" 500 67375

What problem webvirtmgr has with vms not created itself or vnc settings not coming from itself?

[cjsoftuk]

When I looked at this further earlier, it appears to be the case that when creating on command line, the webvirtmgr doesn't create an Instance object for it, and so therefore, we don't have any information in the webvirtmgr database.....

[retspen]

Yes, Instance object not created and xml config not readable for WebVirtMgr (can't normal parse xml) if VM create in console or virt-mangaer.

[kokel]

Thanks retspen! Now I can set the VNC parameters via webvirtmgr.
Is there a good current practice to migrate VMs which were not created by webvirtmgr?

[retspen]

Only delete VM without deleting HDD image and create custom with HDD image.