Fixed IP or Floating IP ? From: emilien.openst...@gmail.com To: salma...@live.com Date: Thu, 3 May 2012 09:55:31 +0200 CC: openstack@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.openst...@gmail.com To: salma...@live.com CC: jorge.delac...@stackops.com; openstack@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.openst...@gmail.com To: salma...@live.com CC: jorge.delac...@stackops.com; openstack@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.delac...@stackops.com To: emilien.openst...@gmail.com CC: openstack@lists.launchpad.net; salma...@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.openst...@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.delac...@stackops.com To: salma...@live.com CC: openstack@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" <salma...@live.com> escribió: Hi Guys, Can anyone provide any insight to the following question: https://answers.launchpad.net/nova/+question/195439 Thanks, Salman _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
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