openstack team mailing list archive

[Soheil Hassas Yeganeh <soheil@xxxxxxxxxxxxxx>]

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<https://github.com/EmilienM/doc-openstack/blob/master/Documentation/How%20to%20setup%20OpenStack%20Essex.pdf>
>> .
>>
>> My configurations files are here<https://github.com/EmilienM/doc-openstack/tree/master/Configuration%20Files>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 <http://paste.openstack.org/show/14775/>)
>>
>> 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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