Adds the appropriate tools to addin the ovs bridge

Ansible will exec a script in the OVS container to ensure the bridge and
ports are properly setup. The script is idempotent.

Change-Id: I5adca595a4d2ef4edf26c9635cfa5ceb30ca4a59
Closes-Bug: #1466375

ansible/roles/neutron/defaults/main.yml

@@ -59,3 +59,5 @@ neutron_logging_verbose: "{{ openstack_logging_verbose }}"
 neutron_logging_debug: "{{ openstack_logging_debug }}"
 
 neutron_keystone_user: "neutron"
+
+neutron_bridge_name: "br-ex"

ansible/roles/neutron/tasks/start.yml

@@ -23,6 +23,11 @@
   when: inventory_hostname in groups['compute'] or
         inventory_hostname in groups['neutron-agents']
 
+- name: Ensuring OVS bridge is properly setup
+  command: docker exec openvswitch_vswitchd /opt/kolla/ovs_ensure_configured.sh {{ neutron_bridge_name }} {{ neutron_interface }}
+  register: status
+  changed_when: status.stdout.find('changed') != -1
+
 - include: ../../start.yml
   vars:
     container_environment:

ansible/roles/neutron/templates/ml2_conf.ini.j2

@@ -31,5 +31,5 @@ arp_responder = true
 #enable_distributed_routing = true
 
 [ovs]
-local_ip = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
+local_ip = {{ hostvars[inventory_hostname]['ansible_' + tunnel_interface]['ipv4']['address'] }}
-bridge_mappings = external:{{ neutron_interface }}
+bridge_mappings = external:{{ neutron_bridge_name }}

docker/centos/binary/openvswitch/ovs-vswitchd/Dockerfile

@@ -3,6 +3,6 @@ MAINTAINER Kolla Project (https://launchpad.net/kolla)
 
 COPY ./start.sh /start.sh
 
-COPY config-internal.sh config-external.sh /opt/kolla/
+COPY ovs_ensure_configured.sh config-internal.sh config-external.sh /opt/kolla/
 
 CMD ["/start.sh"]

docker/centos/binary/openvswitch/ovs-vswitchd/ovs_ensure_configured.sh

@@ -0,0 +1 @@
+../../../../common/openvswitch/ovs-vswitchd/ovs_ensure_configured.sh

docker/common/openvswitch/ovs-vswitchd/ovs_ensure_configured.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+bridge=$1
+port=$2
+
+ovs-vsctl br-exists $bridge; rc=$?
+if [[ $rc == 2 ]]; then
+    changed=changed
+    ovs-vsctl add-br $bridge
+fi
+
+if [[ ! $(ovs-vsctl list-ports $bridge) =~ $(echo "\<$port\>") ]]; then
+    changed=changed
+    ovs-vsctl add-port $bridge $port
+fi
+
+echo $changed

etc/kolla/globals.yml

@@ -54,12 +54,12 @@ docker_restart_policy_retry: "10"
 ####################
 # The interface to use for various services types
 network_interface: "eth0"
+neutron_interface: "eth1"
 
 # These can be adjusted for even more customization
 api_interface: "{{ network_interface }}"
 storage_interface: "{{ network_interface }}"
-neutron_interface: "{{ network_interface }}"
+tunnel_interface: "{{ network_interface }}"
-
 
 ####################
 # Openstack options