openstack team mailing list archive

[Emilien Macchi <emilien.openstack@xxxxxxxxx>]

Hi Salman,

Le jeudi 03 mai 2012 à 09:47 -0500, Salman Malik a écrit :
> Hi Emilien,
> 
> In your configuration you have the following flags:
> 
> --flat_network_bridge=br100

I'm going to try to change it in both servers.

> --floating_range=10.68.5.0/24

That's actually my "public" pool, sot it's not my fixed pool (privates
IPs).

After my tests, I will let you know of course.


Thanks,



Regards


> 
> Can you please tell me why you need br100 when you are using br-int
> with OVS ? Secondly, you seem to use floating_range flag as the second
> flag. I assume that it is the pool of addresses that your instances
> will get IP from, right? It may be worthwhile to modify it to
> fixed_range because Bilal suggested here that this config worked for
> him. 
> 
> Let us know.
> 
> Thanks,
> Salman
> 
> 
> 
> 
> 
> 
> ______________________________________________________________________
> Date: Thu, 3 May 2012 08:29:42 -0400
> Subject: Re: [Openstack] Instance IP assignment problem
> From: soheil@xxxxxxxxxxxxxx
> To: emilien.openstack@xxxxxxxxx
> CC: ahaldin@xxxxxxxxxxxxxxxx; openstack@xxxxxxxxxxxxxxxxxxx;
> salmanmk@xxxxxxxx
> 
> 
> Oops accidently hit send on my phone.
> 
> 
> I had a similar problem before. My problem was that the nic driver on
> the compute instance (your Essex 2) was dropping vlan tags, and then,
> openvswitch wasn't delivering packets. You can check it using tcpdump
> -e -vvv.
> 
> 
> 
> BTW, if you are using virtualbox to run openstack, make sure you are
> not using vbox intel drivers. Use pcnet fast instead.
> 
> 
> OVS splinter may also be useful.
> 
> 
> Hope that helps.
> 
> 
> Cheers
> Soheil
> 
> On Thursday, May 3, 2012, Soheil Hassas Yeganeh wrote:
> 
>         I had a similar problem before. My problem was that the nic
>         driver on the compute instance (your Essex 2) was dropping
>         vlan tags, and then, openvswitch wasn
>         
>                 can you find dhcp requests by using tcpdump for
>                 example ?
>                 
>                 
>                 
>                 sorry for "off-topic" but there may be many reasons of
>                 such issue with dhcp. last one for me was old dhcp
>                 client(Ubuntu) and udp checksum error. I have essex on
>                 centos and was trying ubuntu vm. 
>                 
>                 
>                 On Thu, May 3, 2012 at 12:48 PM, Emilien Macchi
>                 <emilien.openstack@xxxxxxxxx> wrote:
>                 
>                         All seems alright but not working yet.
>                         
>                         
>                         http://paste.openstack.org/show/14791/
>                         
>                         
>                         
>                         I have executed on both servers :
>                         
>                         ovs-vsctl add-port br-int eth1
>                         
>                         
>                         Need I do something else ?
>                         
>                         How the DHCP is working in this case ?
>                         
>                         
>                         
>                         
>                         
>                         
>                         Le jeudi 03 mai 2012 à 09:29 +0100, Bilel
>                         Msekni a écrit : 
>                         
>                                 Then the problem isn't in the instance
>                                 but in the nova-network service ,
>                                 please check if it is working well 
>                                 as well as give us the output log when
>                                 you attempt to create a new instance.
>                                 
>                                 
>                                 
>                                 ______________________________________
>                                 
>                                 Subject: RE: [Openstack] Instance IP
>                                 assignment problem
>                                 From: emilien.openstack@xxxxxxxxx
>                                 To: skible@xxxxxxxxxx
>                                 CC: salmanmk@xxxxxxxx;
>                                 openstack@xxxxxxxxxxxxxxxxxxx
>                                 Date: Thu, 3 May 2012 10:21:37 +0200
>                                 
>                                 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.
>                                                 
>         
>