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Thanks Kevin!


I'll dig into neutron.agent.linux.interface to see how it works. Before that, would you give me any previews about what steps should be taken to add a veth to a existed Neutron network?


Furthermore, is it Neutron who add a veth to ovs bridge or is it the Neutron caller? (such as Nova)


Who's adding flows to ovs bridge? Neutron or caller?


Regards,
Dastan 
 
------------------ Original ------------------
From:  "Kevin Benton"<kevin at benton.pub>;
Date:  Fri, May 12, 2017 10:45 AM
To:  "duhongwei"<duhongwei at qiniu.com>; 
Cc:  "openstack"<openstack at lists.openstack.org>; "Vallachorum Tyranorum"<ardeleandanflorin at gmail.com>; 
Subject:  Re: [Openstack] How to utilize Neutron independently with veths

 
You want to look in neutron.agent.linux.interface to see how things are plugged into OVS. That's the module used by the L3 agent to plug into OVS/linux bridge/etc. 

There is a well defined interface name format corresponding to the port ID and the port ID, Mac address, and a couple of other things I can't recall are set in ovsdb to help the agent identify the port as something it should care about. 


On May 9, 2017 04:49, "duhongwei" <duhongwei at qiniu.com> wrote:


Thanks Dan!


I have to write a customized CNI plugin for our product, so it's better if I know more operation details about how to interact with Neutron manually (consider myself as Nova). Therefore Kuryr is not my best option right now, but it's cool!


Regards,
Dastan
 
------------------ Original ------------------
From:  "Vallachorum Tyranorum"<ardeleandanflorin at gmail.com>;
Date:  Tue, May 9, 2017 04:08 PM
To:  "duhongwei"<duhongwei at qiniu.com>; "openstack"<openstack at lists.openstack.org>; 

Subject:  Re: [Openstack] How to utilize Neutron independently with veths

 
Hi,

Please take a look at Kuryr. Maybe this is what you are looking for.


Dan. 


On Tue, May 9, 2017 at 10:17 AM duhongwei <duhongwei at qiniu.com> wrote:

Hi everyone,


I'm new to OpenStack and currently interested in the Neutron part of it. What I'm seeking is some advice about how to utilize Neutron independently, to build a virtual network, for Docker containers maybe.


Suppose I've already got Neutron and Keystone installed on controller node and compute nodes. I guess the following steps are required to test a virtual network.


1) create a network
2) create a subnet
3) create two pairs of veths (each pair represents a vm)
for each pair of them:
4) create a port for one end of the veth pair (passing veth's mac address as a parameter)
5) attach another end of the veth pair to ovs bridge
6) ping from one veth pair to another


The above is my general idea, don't know if it is correct and don't know the operation details either.
Expecting your suggestions, any links are appreciated.


Regards,
Dastan


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