openstack team mailing list archive

[Emilien Macchi <emilien.openstack@xxxxxxxxx>]

With this article, I understand I'm not alone to have this problem.


I'm going to try the solution, and If it's working, I will update my
documentation on Essex.



Regards



Le vendredi 04 mai 2012 à 13:10 +0000, Vaze, Mandar a écrit :
> Emilien,
> 
>  
> 
> Please see https://answers.launchpad.net/quantum/+question/194111
> 
>  
> 
> Nova-compute and nova-network on two different machines seems to be
> the key here.
> 
> Solution is proposed in the above thread.
> 
>  
> 
> Hope that helps.
> 
>  
> 
> -Mandar
> 
>  
> 
> 
> From: openstack-bounces+mandar.vaze=nttdata.com@xxxxxxxxxxxxxxxxxxx
> [mailto:openstack-bounces+mandar.vaze=nttdata.com@xxxxxxxxxxxxxxxxxxx]
> On Behalf Of Emilien Macchi
> Sent: Thursday, May 03, 2012 1:26 PM
> To: Salman Malik
> Cc: openstack@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Openstack] Instance IP assignment problem
> 
> 
> 
>  
> 
> Hi,
> 
> 
> As I told you, I have also a problem for instance IP assignement.
> 
> 
> My architecture :
> 
> I use Quantum with OVS plugin on 2 servers Essex-1 & Essex-2. Essex-1
> runs all services and Essex-2 runs OVS, Quantum-agent & nova-compute
> only.
> 
> You can see more details here.
> 
> My configurations files are here and in my documentation.
> 
> 
> 
> Problem Description :
> 
> When an instance is created in ESSEX-1, all is working (network).
> 
> But when the VM is started on ESSEX-2, it does not get an IP address.
> (log file)
> 
> I'm sure the problem comes from OVS connection with ESSEX-1.
> 
> 
> Do I need to configure something like a trunk or a tunnel between
> Essex-1 & Essex-2 ?
> 
> I miss something in my configuration, if you have any idea...
> 
> 
> Regards
> 
> 
> Emilien
> 
> 
> Le mardi 01 mai 2012 à 14:35 -0500, Salman Malik a écrit : 
> 
> It may help if you can share the log of your launched instance as
> well. There is a possibility that we both are having the same issue.
> Netstack developers can give a definitive answer to this, but it would
> be interesting to learn what goes wrong with a launched instance.
> 
> 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 21:26:26 +0200
>         
>         Le mardi 01 mai 2012 à 14:22 -0500, Salman Malik a écrit : 
>         
>         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.
>         
>         Here my nova.conf and I don't have any interfering DHCP
>         server :
>         
>         https://github.com/EmilienM/doc-openstack/blob/master/Configuration%20Files/Essex-1/nova.conf
>         
>         
>         Thanks
>         
>         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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> 
> 
> 
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