[gsoc-dev] [ganeti-web-manager] Interaction between GWM Layer and Ganeti Layer (Discussion)

[pranjal mittal]

I am having a look at the ganeti_webmgr code. (Consider me an absolute
beginner)

Without diving into the subtleties so much, I would first like to know the
bigger picture: of how GWM as a Django Application is able to interact with
Ganeti which is a separate tool generally used via the CLI ?

*Possible ways in my opinion:*

(1) GWM making os.system() calls to ganeti-cli with appr. parameters and
reads results from stdout?

(2) Calls to Ganeti Rest / Remote API via some client? (RAPI Client as it
is called)

(3) Some other Python module / API that provides access to function
equivalents of the Ganeti CLI calls.


*As for what I can make out from the code,  RAPI is what I can see being
used; but still not clear on how to use it well.*
(In case I am under the correct presumption: Can I get the latest reference
or tutorial for the Ganeti RAPI?)

Are we simply instantiating the RAPI Client object everytime to make use of
it for the Ganeti specific calls?



*This is how I perceive things right now:*
[Web App Layer (GWM)]  ----  [Ganeti Layer] ----\

\----- [Other Virualizat'n tools]  --- [Kernel / OS Layer]


Looking forward to some inputs and discussion on this hypothetical layer
model and how interaction is done b/n the GWM layer and the Ganeti-Layer.


Thanks
- Pranjal

IRC handle: *pmittal*
OSUOSL handle: *pramttl*


--
Best Regards,
Pranjal Mittal
B.Tech.  2014
Indian Institute of Technology,BHU
Varanasi, U.P,
India
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