3:32 p.m.
On 04/27/2016 09:47 PM, Daniel Henrique Barboza wrote:
On 04/26/2016 06:29 PM, Paulo Ricardo Paz Vital wrote:
> Today, Kimchi (and Ginger) has a strong dependency with Libvirt, well
> described
> in the kimchid.service.{fedora,ubuntu} file that extends the
> wokd.service
> configuration to make it dependent of libvirt service. The current
> configuration
> stops wokd service automatically if libvirt service is stopped.
>
> To prevent wokd to stop automatically if libvirt stops, a new
> configuration must
> be set up and loaded, making wokd service still available to user.
> This is the
> easiest part to solve this issue.
>
> The real issue is that most of the Kimchi operations need to connect
> to libvirt
> service and the current implementation, simple stops the cherrypy
> server if a
> connection is not available (after 10 seconds trying to connect),
> causing a
> "502 bad gateway" error from NGINX. With this implementation from
> Kimchi, Wok
> and GingerBase (and Ginger if installed) will not be available to
> user even
> though they don't depend on the libvirt service.
>
> Basically, the proposal to solve the issue is:
>
> 1) Modify the kimchid.service.{fedora,ubuntu} files to "reduce" the
> dependency
> on libvirt service while wokd is already running - none change will
> modify the
> start up dependency; and
>
> 2) Modify how Kimchi handle the missing libvirt connection to no stop
> the
> cherrypy server and provide information to user by Virtualization tab
> and its
> sub-tabs, keeping all other plugins enabled and operating.
Do we have a standard way in WoK to disable a plug-in? If not, this would
be a good place to start.
Note that if libvirtd service is down -> kimchi down then it would
make sense
to consider libvirtd up -> kimchi up, preferably without reloading WoK
service. Not sure if this is feasible though.
In case user is on Kimchi UI and libvirt goes down, IMO we should not
reload Wok to remove Kimchi tabs, instead of that we should informe user
through a notification that libvirt went down and Kimchi will not work
properly.
>
> Feel free to make any suggestion. Patches will be submitted by the
> end of this
> week.
>
> Thanks and best regards,
> --
> Paulo Ricardo Paz Vital
> Linux Technology Center, IBM Systems
> http://www.ibm.com/linux/ltc/
>
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