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[Salman Malik <salmanmk@xxxxxxxx>]

Regarding L3 gateway, I believe its not necessary to have one (as the VM hasn't obtained an IP right now, so it can't talk to anything outside its net), but I am not sure.
Regarding your problem, do you see any DHCP responses from the DHCP server ? I am asking this because I was having a similar problem earlier where I was getting assigned an IP address no in my desired fixed_network and I believe that was cause by another interfering DHCP server that was replying to discover messages before the nova-network could. 

Salman

Subject: RE: [Openstack] Instance IP assignment problem
From: emilien.openstack@xxxxxxxxx
To: salmanmk@xxxxxxxx
CC: jorge.delacruz@xxxxxxxxxxxx; openstack@xxxxxxxxxxxxxxxxxxx
Date: Tue, 1 May 2012 21:06:01 +0200




  
  


Hi Salman,





I'm thinking about a networking issue. Where is your L3 gateway in this architecture ? Maybe do you need an ip helper tool to redirect DHCP broadcast ?





What do you think about my problem (follow up to my last e-mail) ?





Thanks





Emilien



Le mardi 01 mai 2012 à 14:00 -0500, Salman Malik a écrit :

    Hi,

    

    Here is the error log: http://pastebin.com/KrNZDrvD

    and nova.conf: http://pastebin.com/Fvd6dSZs

    

    Emilien, I am trying to get an understanding of how different Quantum plugins work with OpenStack. Ryu plugin is particularly interesting as it uses an OpenFlow controller to configure Vswitches.

    

    The problem I am faced with is  (I think ) that I already have a private network and Quantum should assign IP addresses to instances using DHCP. But instances send out discover message on laucnh but never find a DHCP server (although there are 2 dnsmasqs running). 

    

    Any ideas?

    

    Thanks,

    Salman

    

    



    



    



    Date: Tue, 1 May 2012 20:43:44 +0200

    Subject: Re: [Openstack] Instance IP assignment problem

    From: jorge.delacruz@xxxxxxxxxxxx

    To: emilien.openstack@xxxxxxxxx

    CC: openstack@xxxxxxxxxxxxxxxxxxx; salmanmk@xxxxxxxx

    

    Hi Emilien and Salman,

    Please, could you upload all the files, errors and conf in pastebin or something like that? 

    I have troubles to open in phone :)

    Thank you


    El 01/05/2012 20:39, "Emilien Macchi" <emilien.openstack@xxxxxxxxx> escribió:


    
        Hi,

        

        

        I have a similar problem when I create a network per project_id with Quantum.

        

        

        My VMs don't get IP and I can't understand why today.

        

        But when I create a private network for all projects, VMs get an IP and all is working well.

        Do you have the same problem ?

        

        

        Salman, I'm interesting about your nova.conf. I can see you are using Ryu ?

        Can you tell me more about your "use case" or architecture ?

        

        

        Thanks

        

        

        Le mardi 01 mai 2012 à 12:28 -0500, Salman Malik a écrit : 

        
            Hi Jorge,

            

            Thanks for looking into the post.

            I have made changes to the nova.conf file so that I only use 10.0.0.x network (but the problem is still the same). For this configuration, I assume that it will give out IPs to instances starting from 10.0.0.11. And just to inform you, my eth1 is configured to be 10.0.0.10 (which is a VM itself, and eth1 is configured as a host-only network with no DHCP) and this interface is plugged in the integration bridge used by quantum plugins.

            

            Thanks,

            Salman

            

            PS: Error log of a launched instance is also attached.

            

            

            

            



            

            Date: Tue, 1 May 2012 19:03:49 +0200

            Subject: Re: [Openstack] Instance IP assignment problem

            From: jorge.delacruz@xxxxxxxxxxxx

            To: salmanmk@xxxxxxxx

            CC: openstack@xxxxxxxxxxxxxxxxxxx

            

            Im not really sure but you are using range for your environment 10.0.3.x and 10.0.0.x for fixed.

            Can you attach a nova network conf?

            Regards

            El 01/05/2012 18:56, "Salman Malik" <salmanmk@xxxxxxxx> escribió:

            
                Hi Guys,

                

                Can anyone provide any insight to the following question:

                https://answers.launchpad.net/nova/+question/195439

                

                Thanks,

                Salman

                

                

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