Open Stack

Hi all,

I've been spending half a day, but I still cannot finish the successful
deployment with linuxbridge. I'd really appreciate any help and comments
for me.

1. Environment
3 nodes deployment on VMware workstation 11
OS is CentOS 7 with 3.10.0-229.4.2.el7.x86_64 kernel version
OpenStack version is kilo
Hypervisor is qemu

2. Status
I set up vxlan using linuxbridge. VM was able to be created, but it could
not get IP address via dhcp on Network Node. I kept track of the problem,
and I noticed that the Ping packet could not arrive at physical NIC on
Compute Node. In detail, the ping was detected by tcpdump on linuxbridge's
interface (you can see the interface via brctl show command) and on the
bridge, but was not on the physical NIC which should be binding with the
linuxbridge.


My question is,

1. According to
http://docs.openstack.org/networking-guide/deploy_scenario1b.html, there is
a warning, "*...Proper operation of VXLAN requires kernel 3.13 or newer...*".
Doesn't the vxlan configuration work well because of the CentOS7 has lower
kernel version?

2. I tried to change the networking configuration from vxlan to vlan, the
problem just became serious; A vm even could not be created with error
messages, "No valid host was found. There are not enough hosts available."
at nova-conductor log on Controller and "NovaException: Unexpected
vif_type=binding_failed" at nova-compute log on Compute.

Thanks in advance.

Regards

Byeong-Gi KIM

2015-05-27 9:31 GMT+09:00 BYEONG-GI KIM <kimbyeonggi at gmail.com>:

> Hello all,
>
> Thank you very much for sharing the information!
>
> I'm now trying to configure 3 node deployment (1 controller, 1 compute,
> and 1 network) with LinuxBridge Plugin. Actually, I deployed VLAN setting
> with the plugin but it seemed not working so that I'm now checking what the
> problem is. The visible error was "no valid host was found", however I
> think something much more complicated would be behind the error. :(
>
> I have to go back to the beginning of the deployment in order to check
> what is wrong, and the information what you all shared would be greatly
> helpful.
>
>
> By the way, does LinuxBridge need to be configured like OVS? For example,
> add-br and add-port for br-ex is required while configuring OVS setting.
> Another question is that I wonder whether configuring
> /etc/sysconfig/network-scripts/ifcfg-ethX.X is needed for VLAN setting.
>
> Best regards
>
> Byeong-Gi KIM
>
> 2015-05-27 5:36 GMT+09:00 James Denton <james.denton at rackspace.com>:
>
>> For more up-to-date configuration examples, including
>> ML2/LinuxBridge/VXLAN, try taking a look at the new networking guides on
>> docs.openstack.org:
>>
>> LinuxBridge:
>> http://docs.openstack.org/networking-guide/deploy_scenario1b.html
>>
>> All: http://docs.openstack.org/networking-guide/
>>
>> James
>>
>> On May 26, 2015, at 11:22 AM, Remo Mattei <remo at italy1.com> wrote:
>>
>> Hi all,
>> I did a project with a TELCO, and used both Linux Bridge and OVS, with
>> ML2 you can use multiple plugins and I do not recall ti have done anything
>> special for the config.
>>
>> If you get stuck send an email, I can always check notes but Arindam,
>> sent a detail steps so hopefully that will address your question.
>>
>> Remo
>>
>> On May 26, 2015, at 08:40, Bhattacharjee, Arindam (Arindam) <
>> arindam.bhattacharjee at alcatel-lucent.com> wrote:
>>
>> These are few notes I had for Linux bridge config on neutron in initial
>> Havana release. Hope this helps!
>> Arindam
>>
>> *From:* BYEONG-GI KIM [mailto:kimbyeonggi at gmail.com
>> <kimbyeonggi at gmail.com>]
>> *Sent:* Tuesday, May 26, 2015 12:09 AM
>> *To:* Martinx - ジェームズ; openstack at lists.openstack.org
>> *Subject:* Re: [Openstack] Documentation for Neutron L3 / VXLAN with
>> LinuxBridge...
>>
>> Hello.
>>
>> I'm looking for the way of LinuxBridge setup for openstack neutron
>> networking instead of ML2 VLAN/VXLAN/GRE like your reason, and you seems
>> successfully deployed the environment.
>>
>> Could you give me any advice for the deployment?
>>
>> I'm now deploying openstack 3 nodes (actually, I attached another
>> compute, so my current deployment setup is 4nodes, i.e., 1 controller, 1
>> network, and 2 computes) by following the openstack installation guide,
>> http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-controller-node.html.
>> I think several options in /etc/nova/nova.conf,
>> /etc/neutron/plugins/ml2/ml2_conf.ini and /etc/neutron/neutron.conf should
>> be modifed properly in order to use LinuxBridge instead of OVS.
>>
>> Here are the lists what I know to modify:
>>
>> 1. /etc/neutron/neutron.conf on controller
>> core_plugin = ml2 (I think this should be modified but I don't know what
>> parameter indicates Linux Bridge Agent Plugin)
>>
>> 2. /etc/neutron/plugins/ml2/ml2_conf.ini on controller
>> Do I still need to modify this file? I'm confused, because the file name
>> is 'ml2', which is for ml2 plugin not for 'linux bridge'... And, I wonder
>> the lists should be modified.
>>
>> Thank you in advance!
>>
>> Regards
>>
>> Byeong-Gi KIM
>>
>>
>>
>>
>> 2015-04-21 7:19 GMT+09:00 Martinx - ジェームズ <thiagocmartinsc at gmail.com>:
>> Hi James!
>>
>> On 20 April 2015 at 18:16, James Denton <james.denton at rackspace.com>
>> wrote:
>> Hi Thiago,
>>
>> VXLAN requires an IP address on each host from which to build the overlay
>> mesh between hosts. Some choose to use a dedicated interface/IP/VLAN for
>> this, but its not required.
>>
>> Sure, I'm aware of that.
>>
>> What is new for me, is that when using "VXLAN + OpenvSwitch", plains
>> VLANs are not required but, when using "VXLAN + LinuxBridges", then, you'll
>> need plain VLANs as well (and this is new for me).
>>
>>
>>
>> As for ‘vconfig’ missing - It appears that the 'ip link’ command
>> (iproute2) is being used instead to create vlan interfaces.
>>
>>
>> Okay, cool! I'll take a look on that.
>>
>> Thank you!
>>
>>
>>
>> James
>>
>>
>> Thiago
>>
>>
>>
>>
>> On Apr 17, 2015, at 10:26 PM, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
>> wrote:
>>
>> Perfect! I followed the Juno documentation here:
>>
>>
>> http://docs.openstack.org/juno/install-guide/install/apt/content/ch_preface.html
>>
>> But I have "VXLAN + LinuxBridges", instead of "GRE + OVS", pretty cool!
>>
>> I was doing it wrong (of course), I did not realized that VXLAN with
>> LinuxBridges, required plain VLANs to work (Is that right?)...
>>
>> Nevertheless, I still do not fully understand this setup, since the
>> "vlan" package and its "vconfig" binary, is not even installed at my
>> Network Node, also, there is nothing at my "/proc/net/vlan...".
>>
>> So, how it is working?  lol
>>
>> Good challenge for the weekend to figure this out!   ^_^
>>
>> Cheers!
>> Thiago
>>
>> On 17 April 2015 at 23:30, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
>> wrote:
>> BTW, I just found this:
>>
>> https://github.com/madorn/vagrant-juno-linuxbridge-vxlan-vlan
>>
>> The problem is that it is for VirtualBox or VMWare, and I'm using
>> exclusively KVM these days...   :-/
>>
>> But, I believe it will help me anyway...   =P
>>
>> On 17 April 2015 at 22:01, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
>> wrote:
>> Hey guys,
>>
>>  Where can I find a complete documentation to make use of LinuxBridges,
>> instead of OpenvSwitch, when using it with VXLAN?
>>
>>  I faced too many problems with OVS in the past (also these days) and
>> now, even Rackspace deploys their RPC v9 and v10 with LinuxBridges but,
>> where are the documents?
>>
>>  I'm reading now, the following  Ansible files, to try to figure this out:
>>
>>  https://github.com/stackforge/os-ansible-deployment
>>
>>  But, this isn't a documentation...   :-P
>>
>>  The current Juno documents only explain GRE + OVS but, this setup is
>> unstable and slow.
>>
>> Cheers!
>> Thiago
>>
>>
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>>
>>
>>
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