[one-users] vmm driver result in shell

[Carlos Martín Sánchez]

The message sent from the core to the drivers is built
by VirtualMachineManager::format_message. This message is then received by
the driver, see for instance one_vmm_exec.rb poll method, and decoded
(VirtualMachineDriver.rb).

I guess you can safely add a new xml element to the message if you need to.


Let me know if this works out.

Regards
--
Carlos Martín, MSc
Project Engineer
OpenNebula - The Open-source Solution for Data Center Virtualization
www.OpenNebula.org | cmartin at opennebula.org |
@OpenNebula<http://twitter.com/opennebula><cmartin at opennebula.org>


On Mon, Mar 25, 2013 at 1:47 PM, Tobias Zillner <tobias.zillner at gmx.at>wrote:

>  It depends which commad i am executing. Dump memory is resource intesive
> but commds like read the process list shoudn't cost to much performance.
>
> The problem is that the usershould be able to choose wich command is
> executed. So i must add a possibility to get this command to the driver. Or
> am i thinking wrong?
>
> Regards,
>
> Tobias
>
> *Gesendet:* Montag, 25. März 2013 um 13:19 Uhr
> *Von:* "Carlos Martín Sánchez" <cmartin at opennebula.org>
> *An:* "Tobias Zillner" <tobias.zillner at gmx.at>
> *Cc:* users <users at lists.opennebula.org>
> *Betreff:* Re: [one-users] vmm driver result in shell
> Is your command very resource-intensive?
>
> I'm thinking that maybe you could just add your commands to the periodic
> VM monitorization. Or add a flag somewhere to indicate if the operation
> should be done in the next poll action... If you avoid to change the
> OpenNebula code it will be easier to distribute, use with newer versions,
> etc.
> --
> Carlos Martín, MSc
> Project Engineer
> OpenNebula - The Open-source Solution for Data Center Virtualization
> www.OpenNebula.org | cmartin at opennebula.org | @OpenNebula<http://twitter.com/opennebula>
>
> On Mon, Mar 25, 2013 at 12:59 PM, Tobias Zillner <tobias.zillner at gmx.at>wrote:
>>
>> Hi,
>>
>> thank you for your quick answer!
>>
>> I am executing a volatility command  on the driver. Results are some kind
>> of lists or process information which is show directly on the screen/shell.
>>
>> At the moment i added functionality to one.vm.action to process my
>> commands. Which part would be best to save the results in a document
>> ressource or add it to the vm template?
>> How can i invoke this?
>>
>> Regards,
>> Tobias
>>
>> 2013/3/25 Carlos Martín Sánchez <cmartin at opennebula.org>
>>>
>>> Hi,
>>>
>>> What kind of results will you present to the user?
>>>
>>>
>>> The commands that trigger a driver action are asynchronous, so you can't
>>> get any result immediately to the user.
>>>
>>> If you are modifying the c++ core, you could add your custom information
>>> in the VM template, this way the users will see it in the 'onevm show'
>>> output.
>>>
>>> Or you could use the generic document resources [1]. These are just like
>>> the templates managed with onetemplate; they will store anything and will
>>> also have owner, group, acl, permissions...
>>>
>>> Regards
>>>
>>> [1]
>>> http://opennebula.org/documentation:rel3.8:api#actions_for_document_management
>>> --
>>> Carlos Martín, MSc
>>> Project Engineer
>>> OpenNebula - The Open-source Solution for Data Center Virtualization
>>> www.OpenNebula.org | cmartin at opennebula.org | @OpenNebula<http://twitter.com/opennebula>
>>>
>>>  On Fri, Mar 22, 2013 at 2:37 PM, Tobias Zillner <tobias.zillner at gmx.at>wrote:
>>>
>>>>  Hello,
>>>>
>>>> my Name is Tobias Zillner and I am working on a master thesis about
>>>> forensics in the cloud.
>>>>
>>>> For my practical part I decided to add forensic services to open
>>>> nebula.
>>>>
>>>> So i extended the onevm commad and added a function forensics. I
>>>> extended the whole way through the code.
>>>> At the moment i am able to execute my own vmmd script, in which a
>>>> forensic tool (volatility) is called and analyse the virtual machines.
>>>>
>>>> But now I don't know how to get the result back to the user. Basically
>>>> i want to create a scenario like this:
>>>>
>>>> A user just puts in onevm forensics id and the analysis result is shown
>>>> to him in the screen.
>>>>
>>>> Anybody can help me here and tell me what funtions to call or how the
>>>> way back to the user shell works?
>>>> Does anyone have experience with adding funtions and the flow of
>>>> commands through the code?
>>>>
>>>> THX!
>>>>
>>>> Best Regards,
>>>>
>>>> Tobias
>>>>  _______________________________________________
>>>> Users mailing list
>>>> Users at lists.opennebula.org
>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>
>>>
>>>
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