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>2014-06-25 02:09:58.612 13884 ERROR stevedore.extension [-] Could not load 'file': websockify>=0.5.1,<0.6

It's clearly complaining of a missing package/file related to
websockify. Do you have required package of websockify installed?

On Wed, Jun 25, 2014 at 12:03 PM, Nagaraj Mandya <nmandya at gmail.com> wrote:
> Hello,
>   I am using Havana and every once in a while a VM fails to start and goes
> into ERROR state. When I check the Nova compute logs, I find this error.
> Note that this does not happen always. Can anybody shed light on why this is
> happening? Is there any workaround? Thanks.
>
> 2014-06-25 02:09:58.530 13884 AUDIT nova.compute.manager
> [req-cefb1f94-4685-4510-8cb6-4df472af06d0 c3b3e4719cd64dab8d46f2d8edac5fd1
> dbf46e2c6ff0437dab6e1520381b20f6] [instance:
> c48618bf-56c5-4a8d-8d9f-4ee9d88e0e94] Starting instance...
> 2014-06-25 02:09:58.612 13884 ERROR stevedore.extension [-] Could not load
> 'file': websockify>=0.5.1,<0.6
> 2014-06-25 02:09:58.612 13884 ERROR stevedore.extension [-]
> websockify>=0.5.1,<0.6
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension Traceback (most
> recent call last):
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension   File
> "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 89, in
> _load_plugins
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension     invoke_kwds,
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension   File
> "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 101, in
> _load_one_plugin
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension     plugin =
> ep.load()
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension   File
> "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1988, in load
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension     if require:
> self.require(env, installer)
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension   File
> "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2001, in require
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension
> working_set.resolve(self.dist.requires(self.extras),env,installer))
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension   File
> "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in resolve
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension     raise
> DistributionNotFound(req)
> 2014-06-25 02:09:58.612 13884 TRACE stevedore.extension
> DistributionNotFound: websockify>=0.5.1,<0.6
> --
> Regards,
> Nagaraj
>
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-- 
Cheers,
Abhijeet Rastogi (shadyabhi)