[one-users] OpenNebula Sunstone statistics

[Hector Sanjuan]

The statistics are only accesible if you are logged in and to put all that  
in your own page is not inmmediate.

If you can make an app that takes a screenshot of your sunstone screen and  
serves it to the public that could be one easy way.

Second dirty way would be to try deploy a second sunstone server whose  
dashboard and layout are hacked in a way that it only shows the statistics  
(hiding the menu, top/bottom bars). I never tried to deploy a second  
server for the same install of ONE, but I think it should be possible.  
Hacking would be done in layout.js and dashboard-tab.js files mostly. You  
can hack sunstone-server.rb so that login happens automaticly with the  
credentials you want and perform relogin if session exprires.

And programatically, it is not so straightforward. Dashboard statistics  
are build by processing and regrouping the data that comes when the list  
of Hosts, VMs... is fetched. This is done in monitoring.js which groups  
and plots the information according to configurations defined in the  
SunstoneMonitoringConfig object.

So this approach would be a bit of a hell if you're not familiar with the  
code:

1 - add a custom route to the sunstone server that generates the stats  
page you want to show.

get '/stats' do
   #perhaps turn session expiration of here
   erb :stats, :layout => false
end

The generated html should contain the <div>s where you would like to paint  
the things. You can try copying that from dashboard-tab.js.

2 - Include opennenbula.js, monitoring.js and all the jquery* vendor  
libraries. Create a new stats.js file. After you  login in sunstone, you  
can directly go to http://sunstone-ip:port/stats Your stats.js will need  
to make use of OpenNebula.Host.list(params) and similar to get a list of  
resources. In the params you need to include a callback function.

3 - your stats JS should include the SunstoneMonitoringConfig['HOST'] You  
can copy it from hosts-tab.js. The only part I think you need to edit is  
the plot() function inside it, which indicates where the plots are going  
to be painted ("container").

4 - Within the callback function for Host.list() you should call

     SunstoneMonitoring.monitor('HOST', host_list)

(see updateHostsView() in hosts-tab.js, which is the callback for  
Host.list())

5 - If the steps above are ok then the pies and diagrams for hosts should  
be painted in your stats page in the divs that you placed. If you want VMs  
stats, you need to get the VMs list, the SunstoneMonitoringConfig['VM']  
object and repeat the process.

I keep wondering if maybe I missed an easy brighter way to do this. I'll  
write back if it cames to my mind.

-- 
Hector Sanjuan
OpenNebula Developer

En Wed, 05 Sep 2012 17:33:14 +0200, Sándor Guba <gubasanyi at gmail.com>  
escribió:

> Hi,
>
> I would like to share the diagrams and statistics from sunstone
> (dashboard host panel) on a public webpage. Is there an easy way to do
> this?
>
> Thank you for your answears!
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