[one-users] Network addressing and IP recognition in ONE

[Andreas Calvo Gómez]

Dmtri,
It helps but still keeps the same behaviour: you have to define beforehand
the relation between MACs and IPs – either in ONE or in your DHCP server.

 

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Andreas Calvo Gómez

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From: Dmitri Chebotarov [mailto:dchebota at gmu.edu] 
Sent: miércoles, 16 de octubre de 2013 21:51
To: Jaime Melis; Andreas Calvo Gómez
Cc: users
Subject: RE: [one-users] Network addressing and IP recognition in ONE

 

Hi Andreas,  

 

I don't know if this helps - when you create a VM you can request specific
IP address for the VM from the VNET, i.e.:

 

NIC = [ NETWORK_ID = 1, IP = 192.168.0.3 ]

Thanks,

 

  _____  

From: users-bounces at lists.opennebula.org
<users-bounces at lists.opennebula.org> on behalf of Jaime Melis
<jmelis at opennebula.org>
Sent: Wednesday, October 16, 2013 10:54 AM
To: Andreas Calvo Gómez
Cc: users
Subject: Re: [one-users] Network addressing and IP recognition in ONE 

 

Hi Andreas, 

 

no, that's not currently supported by OpenNebula.

 

You can use however user-defined fields to store any information. If you do
"onevm update <id>" you can add any key=value. If you have a third-party
tool that reads from the template that user-defined field, you can simulate
this feature.

 

cheers

 

On Thu, Oct 3, 2013 at 1:02 PM, Andreas Calvo Gómez
<andreas.calvo at scytl.com> wrote:

Hello all,
Network addressing under ONE (with any of the drivers) seems target to
isolated/dedicated networks, where one can assume all IP address can be
guessed by the MAC.
However, when mixing a working network segment with ONE, you have to
sacrifice something to get it working.
Currently, there are 3 options:
- Virtual Router
- Virtual Network with fixed range
- Virtual Network without range

None of the mentioned options will fit with an external network services
server (DHCP, DNS) and let ONE know the right address of a VM.

Would it be possible to, given a VM and all context parameters, push the IP
information into ONE?
In a more practical approach: during the startup of the OS, get a valid IP
address, and during the context script, push that information to ONE.
Seems a little bit more dynamic, since nothing is hardcoded either in
Virtual Networks or in the network service (DHCP), plus it gives the ability
to control from outside and integrated with other services.

Thanks!!
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-- 

Jaime Melis
Project Engineer
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | jmelis at opennebula.org

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