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devstack: how to bridge VMs directly to external network using quantum

asked 2014-05-02 07:29:17 -0500

anonymous user


I'm looking to attach all my instances to a bridge that is connected to my public/external network interface so they can receive their ipv4 address from an external dhcp-server. I previously used nova-network's flatmanager to accomplish this, which worked just fine.

I recently switched to quantum because I'm looking to use the lb-aas (load balancing) features. I've tried both the OVS and linuxbridge plugins, but the network layout is way more than I actually need (multiple bridges, tap interfaces, vlans, etc...).

My question is: which neutron network settings do I use to simply plug in all my instances in a bridge that already exists, so that I can still use the lbaas-services?

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answered 2014-05-04 02:39:57 -0500

Here are the instructions:

The gist is that you'll configuring all compute nodes with a new bridge, connected to the physical NIC of the pre-existing network you'd like to use. You'll then configure the OVS agent(s) to know about this new bridge. Then you'll create a new provider network, which is mapped to the physical network you'd like your VMs to connect to. Connect your VMs to this new Neutron provider network, and you're done.

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Asked: 2014-05-02 07:29:17 -0500

Seen: 4,730 times

Last updated: May 04 '14