packstack cannot install openstack with linuxbridge + vxlan

[Anqi Lu]

The answer file is as below:
CONFIG_PROVISION_DEMO=n
CONFIG_NEUTRON_L3_EXT_BRIDGE=provider
CONFIG_NEUTRON_L2_AGENT=linuxbridge
CONFIG_NEUTRON_LB_INTERFACE_MAPPINGS=physnet1:eth0
CONFIG_NEUTRON_ML2_MECHANISM_DRIVERS=linuxbridge

Also, I need to add a line (line 901 as shown below) in /usr/lib/python2.7/site-packages/packstack/plugins/neutron_350.py to ensure packstack run without throwing errors. (This issue has been raised in https://bugs.launchpad.net/packstack/+bug/1597653)

900 elif agent == "linuxbridge":
901 ovs_type = ""
902 host_var = 'CONFIG_NEUTRON_LB_HOST'
903 template_name = 'neutron_lb_agent'

Then after packstack complete, the /etc/neutron/plugins/ml2/linuxbridge_agent.ini file is as below:

[vxlan]
enable_vxlan = False
local_ip = <None>
l2_population = false

Vxlan network does not function with this config file. Instead, according to the official doc, the configuration should be as:

[vxlan]
enable_vxlan = True
local_ip = OVERLAY_INTERFACE_IP_ADDRESS
l2_population = True

The incorrect ml2 linuxbridge agent config could be caused by the incomplete puppet template (which is in a sharp contrast to neutron_ovs_agent.pp):
/usr/lib/python2.7/site-packages/packstack/puppet/templates/neutron_lb_agent.pp

Brief environment:
CentOS 7.1 + RDO Mitaka (latest)
packstack Mitaka 8.0.0

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/341348

[Alan Pevec (apevec)]

Anqi, please help us test patch under review and provide the test result as a Gerrit comment, thanks!

[Anqi Lu (anqilu)]

Alan, the patch does not work for me. Review has been posted on Gerrit comment.
I suspect the route course is that I did not get the latest related code (e.g. openstack-puppet modules)

[Alfredo Moralejo (amoralej)]

Anqi, did you test linuxbridge mechanism driver with vxlan tunnels configuring it manually?

I've found some documentation [1] about kernel version (3.13) which is not in centos 7. However, required patches may have been backported so we are not sure if that combination is working fine:

[1] http://docs.openstack.org/mitaka/networking-guide/scenario-classic-lb.html#infrastructure

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/341348
Committed: https://git.openstack.org/cgit/openstack/packstack/commit/?id=1ca1b0268e474c11acbedba7823efc4f1bd0db02
Submitter: Jenkins
Branch: master

commit 1ca1b0268e474c11acbedba7823efc4f1bd0db02
Author: Ivan Chavero <email address hidden>
Date: Wed Jul 13 02:15:44 2016 -0600

    Add vxlan to linuxbridge agent when enabled

    Packstack should add vxlan to linuxbridge configuration
    when enabled.

    Change-Id: I697f9abed1ac96975b4a67a68bae96bb5eb5670c
    Closes-bug: #1599025