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Openstack juno network node-external network interface

asked 2014-12-29 08:27:45 -0500

stevew gravatar image

updated 2014-12-29 08:56:19 -0500

hi all, I have followed the installation guide of openstack juno. I deployed the three node architecture. I run all these three node in Ubuntu 14.04 on my Vmware. Each node I set an eth0 as a static ip via NAT to access Internet for downloading. On network node,
I have eth0(Internet,I set), eth1(management),eth2(instance tunnels),eth3(external, requred in the guide). The guide says:

# The external network interface
auto INTERFACE_NAME
iface INTERFACE_NAME inet manual
        up ip link set dev $IFACE up
        down ip link set dev $IFACE down

I don't know what it means, how it works and how I can make my network node to access internet for the instance I will creat in my openstack by this way. I'm glad if anyone could help. If you need some information, pls tell me. Thank you!

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answered 2014-12-31 03:28:52 -0500

foexle gravatar image

That means you should create this device with the posted settings. In your case:

auto eth3
iface eth3 inet manual
        up ip link set dev $IFACE up
        down ip link set dev $IFACE down

after that ifup eth3 and the documented following steps (ovs br-ex if you'r using).

Each "mapped" floating IP will configured on the device directly by Neutron otherwise your hardware switches can't find your floating IP's with the correspond MAC.

Cheers Heiko

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Asked: 2014-12-29 08:27:45 -0500

Seen: 676 times

Last updated: Dec 31 '14