Fixed IP or Floating IP ?
From: [email protected]
To: [email protected]
Date: Thu, 3 May 2012 09:55:31 +0200
CC: [email protected]
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: [email protected]
To: [email protected]
CC: [email protected]; [email protected]
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: [email protected]
To: [email protected]
CC: [email protected]; [email protected]
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: [email protected]
To: [email protected]
CC: [email protected]; [email protected]
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" <[email protected]>
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: [email protected]
To: [email protected]
CC: [email protected]
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" <[email protected]>
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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