Default external network stops working after adding another external network

[Eugene Nikanorov]

MOS 6.1

Additional external network can be added following these instructions:
http://blog.oddbit.com/2014/05/28/multiple-external-networks-wit/

Default network net04_ext is created without explicitly set --provider:network attribute, assuming L3 agent knows only one external bridge.

So after reconfiguring L3 agent it would not know that router-gateway interfaces of net04_ext should be plugged in br-floating (default ext bridge) and will plug them into br-int.

Workaround is to recreate net04_ext with proper parameters.

[Eugene Nikanorov (enikanorov)]

Eventhough it affects 6.1, there's nothing that could be done on MOS side.
It's fuel, so I'm not sure we can/should fix that for 6.1
Since we're not fixing it for 7.0, the only thing we can do is to target this to 8.0

[Sergey Vasilenko (xenolog)]

http://blog.oddbit.com/2014/05/28/multiple-external-networks-wit/ -- is a old method for create multiple-floating networks.

the better way is http://www.marcoberube.com/archives/248

[Sergey Kolekonov (skolekonov)]

After some discussions with Sergey Vasilenko, it was decided that this problem shouldn't be fixed only on Puppet side.
In Nailgun we need to add a physnet mapping to the existing scheme for both VLAN/Tun segmentations:

quantum_settings:
  L2:
    phys_nets:
      physnet1:
        bridge: br-floating

Currently there's no filtering by nodes for this settings, though for computes without DVR this mapping is not needed. Also such filtering will be useful for the multiple external networks feature.
Reassigning this bug to Fuel Python team as some changes from Nailgun side are needed.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Sergey Kolekonov (<email address hidden>) on branch: master
Review: https://review.openstack.org/243666

[Sergey Kolekonov (skolekonov)]

I think this bug can be closed since commit https://review.openstack.org/#/c/245734/ had been merged. Now Neutron external network is created as a 'flat' network and has physnet binding

[Aleksandr Didenko (adidenko)]

I agree with Sergey, marking this bug as invalid for 8.0