Hi Milan,
thank you for your answer.
So there is no other way/workaround? We must wait the fix in the engine
and then upgrade? Maybe a downgrade of libvirt(?).
I was looking up some config file in the host under /etc/libvirt and
found the parameters vnc_password in qemu.conf file. I'm not sure that
setting a password per host in this config file works, casue it is still
passed via xml...
The default VNC password. Only 8 bytes are significant for
# VNC passwords. This parameter is only used if the per-domain
# XML config does not already provide a password.
Francesco
Il 14/02/2022 12:41, Milan Zamazal ha scritto:
francesco--- via Users<[email protected]> writes:
Hi all,
I'm using websockify + noVNC for expose the vm console via browser getting the
graphicsconsoles ticket via API. Everything works fine for every other host
that I have (more than 200), the console works either via oVirt engine and via
browser) but just for a single host (CentOS Stream release 8, oVirt 4.4.9) the
console works only via engine but when I try the connection via browser I get
the following error (vdsm log of the host):
ERROR FINISH updateDevice error=unsupported configuration: VNC password is 12
characters long, only 8 permitted
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/vdsm/common/api.py", line 124, in
method
ret = func(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/vdsm/API.py", line 372, in
updateDevice
return self.vm.updateDevice(params)
File "/usr/lib/python3.6/site-packages/vdsm/virt/vm.py", line 3389, in
updateDevice
return self._updateGraphicsDevice(params)
File "/usr/lib/python3.6/site-packages/vdsm/virt/vm.py", line 3365, in
_updateGraphicsDevice
params['params']
File "/usr/lib/python3.6/site-packages/vdsm/virt/vm.py", line 5169, in
_setTicketForGraphicDev
self._dom.updateDeviceFlags(xmlutils.tostring(graphics), 0)
File "/usr/lib/python3.6/site-packages/vdsm/virt/virdomain.py", line 101,
in f
ret = attr(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/vdsm/common/libvirtconnection.py",
line 131, in wrapper
ret = f(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/vdsm/common/function.py", line 94,
in wrapper
return func(inst, *args, **kwargs)
File "/usr/lib64/python3.6/site-packages/libvirt.py", line 3244, in
updateDeviceFlags
raise libvirtError('virDomainUpdateDeviceFlags() failed')
libvirt.libvirtError: unsupported configuration: VNC password is 12
characters long, only 8 permitted
The error is pretty much self explanatory but, I can't manage to
figure out why only on this server
Hi,
this happens with libvirt 8.0.
and I wonder if I can set the length of the generated vnc password
somewhere.
I don't think so, it must be fixed in Engine. See
https://github.com/oVirt/ovirt-engine/commit/a1e7e39348550b575f1f01b701105f9e1066b09f
for more details.
Regards,
Milan
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