[Openstack] Instance IP assignment problem
Emilien Macchi
emilien.openstack at gmail.com
Thu May 3 08:21:37 UTC 2012
Fixed IP
Le jeudi 03 mai 2012 à 09:15 +0100, Bilel Msekni a écrit :
> Fixed IP or Floating IP ?
>
>
>
>
>
> ______________________________________________________________________
> From: emilien.openstack at gmail.com
> To: salmanmk at live.com
> Date: Thu, 3 May 2012 09:55:31 +0200
> CC: openstack at lists.launchpad.net
> 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 at gmail.com
> To: salmanmk at live.com
> CC: jorge.delacruz at stackops.com; openstack at lists.launchpad.net
> 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 at gmail.com
> To: salmanmk at live.com
> CC: jorge.delacruz at stackops.com;
> openstack at lists.launchpad.net
> 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 at stackops.com
> To: emilien.openstack at gmail.com
> CC: openstack at lists.launchpad.net;
> salmanmk at live.com
>
> 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 at gmail.com> 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 at stackops.com
> To: salmanmk at live.com
> CC:
> openstack at lists.launchpad.net
>
> 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 at live.com>
> 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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