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Re: Instance IP assignment problem

 

Fixed IP



Le jeudi 03 mai 2012 à 09:15 +0100, Bilel Msekni a écrit :
> Fixed IP or Floating IP ?
> 
> 
> 
> 
> 
> ______________________________________________________________________
> From: emilien.openstack@xxxxxxxxx
> To: salmanmk@xxxxxxxx
> Date: Thu, 3 May 2012 09:55:31 +0200
> 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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>                                 
>                                 
>                 
>                 
>                 
>         
>         
>         
> 
> 
> 
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