[one-users] OpenNebula and DHCP Server

[Dmitri Chebotarov]

Hi

You could also use your existing DHCP server and add static entries – ONE uses predefined MAC<>IP assignments (MAC address  is function of IP address).
I find it easier since I don't need to contextualize VMs.
--
Thank you,

Dmitri Chebotarov
VCL Sys Eng, Engineering & Architectural Support, TSD - Ent Servers & Messaging
223 Aquia Building, Ffx, MSN: 1B5
Phone: (703) 993-6175 | Fax: (703) 993-3404


From: Carlos Martín Sánchez <cmartin at opennebula.org<mailto:cmartin at opennebula.org>>
Date: Thursday, September 5, 2013 5:29
To: Ionut Popovici <ionut at hackaserver.com<mailto:ionut at hackaserver.com>>, Mohammad Fazli Ahmat Jalaluddin <fazli.mmu at gmail.com<mailto:fazli.mmu at gmail.com>>
Cc: users <users at lists.opennebula.org<mailto:users at lists.opennebula.org>>
Subject: Re: [one-users] OpenNebula and DHCP Server

Hi,

Actually, we do provide a Virtual Router appliance that contains a DHCP server. It knows the correct IP assigned by OpenNebula to each MAC.
See http://opennebula.org/documentation:rel4.2:router

Regards

--
Join us at OpenNebulaConf2013<http://opennebulaconf.com> in Berlin, 24-26 September, 2013
--
Carlos Martín, MSc
Project Engineer
OpenNebula - The Open-source Solution for Data Center Virtualization
www.OpenNebula.org<http://www.OpenNebula.org> | cmartin at opennebula.org<mailto:cmartin at opennebula.org> | @OpenNebula<http://twitter.com/opennebula><mailto:cmartin at opennebula.org>


On Thu, Sep 5, 2013 at 8:55 AM, Ionut Popovici <ionut at hackaserver.com<mailto:ionut at hackaserver.com>> wrote:
No opennebula don't provide DHCP , you could use vlans to brake the network, and u can use contextualization to get the ip for virtual machines, if u use bridge mode is u should make rules in iptables(ebtables) for udp dst port 67  and allow only response from your DHCP server.
Chears.
On 9/5/2013 9:49 AM, Mohammad Fazli Ahmat Jalaluddin wrote:
Hi guys,

I just want to ask few questions.

Does OpenNebula act as a DHCP Server and give IP address to the VM if it is not contextualized in the first place?

When the VM is deploy (without context), e.g Ubuntu server default network configuration is using DHCP, and thus the IP for the VM is different with the one that OpenNebula uses from the vnet lease.

Is the IP address in the VM is given by OpenNebula (act as the DHCP server) or given by our network existing DHCP server?

The reason I'm asking is because our network is poisoned since there are 2 DHCP server. BTW, our OpenNebula configuration for the network is using dummy and using bridge in the frontend

Thank you very much.

Regards,
Fazli



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