[one-users] vmm driver result in shell

Mon Apr 1 09:00:48 PDT 2013

THnaks for your advice, but I decided to save the results as additional xml
attribute in the vm template. So the user can see the result with onevm
show id command.

Basically this way is already working. I have only one problem left.

I send the memory forensic result from the driver to the core with
sendmessage.

The problem is now i get the result in multiple parts. This means for every
line of the result a own log is created and so on...
But i want to get it as one message and save it also as one message.

How can i solve this issue. Is it possible to capsule the message into
something?

Regards,
Tobias

2013/4/1 Carlos Martín Sánchez <cmartin at opennebula.org>

> Think of Documents as Templates with a number that identifies documents of
> the same type. For the reference documentation, see the Document and
> DocumentPool classes of the ruby oca [1]. For an example, you may want to
> take a look at the OpenNebula Apps source code [2].
>
> Regards
>
> [1] http://opennebula.org/doc/3.8/oca/ruby/
> [2] http://opennebula.org/software:software
>
> --
> 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 Sat, Mar 30, 2013 at 5:30 PM, Tobias Zillner <tobias.zillner at gmx.at>wrote:
>
>> Yes it worked fine for me. Thank you for the advice!
>>
>> Now I am working on how to save the examiation results. The one document
>> way sounds very nice.
>>
>> Can you give me some exapmles how to use them?
>>
>> Regards,
>> Tobias
>>
>>
>>
>>
>> 2013/3/25 Carlos Martín Sánchez <cmartin at opennebula.org>
>>
>>> 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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