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how to use CONFIG_NEUTRON_OVS_TUNNEL_IF in answer file?

asked 2017-12-04 07:51:07 -0600

yixuan178 gravatar image

updated 2017-12-04 09:26:46 -0600

i have two nodes w/ centos 7, both of them have two 10gb interface ports, but only one port connect to switch. And they have different names for each interface of nodes, one is ens4f1(compute node), another one is ens1f1 (controller node). I noticed in rdo quick start guide, (, it shows that configure CONFIG_NEUTRON_OVS_TUNNEL_IF in answer file, but i have no idea what's the benefit for it vs. by default, and for my case, how to set that parameter? if i use ens1f1 which don't connect to switch, is it okay? and which interface need to point out for that paramter, controller or compute?

thanks, Eugene

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answered 2017-12-05 17:11:08 -0600

Bernd Bausch gravatar image

updated 2017-12-05 17:12:08 -0600

This setting defines the interface used for tenant network traffic using VXLAN or GRE. The benefit is that you separate management and tenant network traffic. If you leave it out, all traffic uses a single interface.

If your interface names are different on the compute and controller nodes, you could try to manually set the local_ipoption in openvswitch_agent.ini on both nodes after provisioning with packstack (not sure if that works). Or you disable predictable network interface naming on the nodes, so that they are called eth0 etc.

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Asked: 2017-12-04 07:51:07 -0600

Seen: 23 times

Last updated: Dec 05