Add LBaaS in the lab scripts

This patch adds support to enable neutron LBaaS support in the
training guide's OpenStack installation.

Changes made are as follows

* Pre-download neutron-lbaas-agent to base disk
* Enable LBaaS support on horizon on controller node
* Configure neutron server to support LBaaS with haproxy as provider
  on controller node
* Enable and configure LBaaS agent on network node

Change-Id: I35f8c19ebceb7420f735354337bf71b4d92edf93
Closes-Bug: 1414767

labs/config/scripts.controller

@@ -20,5 +20,7 @@ cmd queue setup_horizon.sh
 cmd snapshot_cycle horizon_installed
 cmd queue config_external_network.sh
 cmd queue config_tenant_network.sh
+cmd snapshot_cycle openstack_networks_configured
+cmd queue setup_lbaas_controller.sh
 cmd snapshot_cycle controller_node_installed
 cmd boot

labs/config/scripts.network

@@ -4,6 +4,8 @@ cmd queue etc_hosts.sh
 cmd queue osbash/enable_vagrant_ssh_keys.sh
 cmd snapshot_cycle network_configured
 cmd queue setup_neutron_network.sh
+cmd snapshot_cycle neutron_configured
+cmd queue setup_lbaas_network.sh
 cmd snapshot_cycle network_node_installed
 # Take snapshot of changes on controller VM, too
 cmd queue shutdown_controller.sh

labs/scripts/apt_pre-download.sh

@@ -61,7 +61,7 @@ apt_download nova-api nova-cert nova-conductor nova-consoleauth \
     nova-novncproxy nova-scheduler python-novaclient
 
 # Neutron Controller
-apt_download neutron-server neutron-plugin-ml2
+apt_download neutron-server neutron-plugin-ml2 neutron-lbaas-agent
 
 # Cinder Controller
 apt_download cinder-api cinder-scheduler

labs/scripts/setup_lbaas_controller.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+set -o errexit -o nounset
+TOP_DIR=$(cd $(dirname "$0")/.. && pwd)
+source "$TOP_DIR/config/paths"
+source "$CONFIG_DIR/credentials"
+source "$LIB_DIR/functions.guest"
+source "$CONFIG_DIR/admin-openstackrc.sh"
+exec_logfile
+
+indicate_current_auto
+
+#------------------------------------------------------------------------------
+# Set up OpenStack neutron LBaaS for controller node.
+# http://docs.openstack.org/admin-guide-cloud/content/install_neutron-lbaas-agent.html
+#------------------------------------------------------------------------------
+
+echo "Configuring neutron lbaas for controller node."
+conf=/etc/neutron/neutron.conf
+
+# Configure network plugin parameters
+iniset_sudo $conf DEFAULT service_plugins "router,lbaas"
+
+echo "Restarting neutron service."
+sudo service neutron-server restart
+
+# Configure openstack dashboard
+function check_dashboard_settings {
+    local memcached_conf=/etc/memcached.conf
+    local dashboard_conf=/etc/openstack-dashboard/local_settings.py
+
+    # Enabling Neutron LBaaS on Horizon
+    echo "Enabling neutron LBaaS on horizon."
+    sudo sed -i "s/'enable_lb': False/\'enable_lb\': True/" $dashboard_conf
+}
+
+echo "Checking dashboard configuration."
+check_dashboard_settings
+
+echo "Reloading apache and memcached service."
+sudo service apache2 restart
+sudo service memcached restart

labs/scripts/setup_lbaas_network.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -o errexit -o nounset
+TOP_DIR=$(cd $(dirname "$0")/.. && pwd)
+source "$TOP_DIR/config/paths"
+source "$CONFIG_DIR/credentials"
+source "$LIB_DIR/functions.guest"
+source "$CONFIG_DIR/openstack"
+exec_logfile
+
+indicate_current_auto
+
+#------------------------------------------------------------------------------
+# Set up OpenStack neutron LBaaS for network node.
+# http://docs.openstack.org/admin-guide-cloud/content/install_neutron-lbaas-agent.html
+#------------------------------------------------------------------------------
+
+echo "Installing neutron lbaas agent for network node."
+sudo apt-get install -y neutron-lbaas-agent
+
+echo "Configuring LBaaS agent for network node."
+conf=/etc/neutron/lbaas_agent.ini
+iniset_sudo $conf DEFAULT device_driver neutron.services.loadbalancer.drivers.haproxy.namespace_driver.HaproxyNSDriver
+iniset_sudo $conf DEFAULT interface_driver neutron.agent.linux.interface.OVSInterfaceDriver
+
+echo "Restarting the neutron lbaas agent service."
+sudo service neutron-lbaas-agent restart
+
+#------------------------------------------------------------------------------
+# Verify the neutron LBaaS installation
+#------------------------------------------------------------------------------
+
+echo "Verifying neutron lbaas installation."
+
+echo "Waiting for neutron-lbaas-agent to start."
+AUTH="source $CONFIG_DIR/demo-openstackrc.sh"
+until node_ssh controller-mgmt "$AUTH; neutron lb-pool-list" >/dev/null 2>&1; do
+    sleep 1
+done
+
+LB_NUMBER=$(date +"%d%m%y%H%M%S")
+echo "neutron lb-pool-create --lb-method ROUND_ROBIN --name test-lb$LB_NUMBER --protocol HTTP --subnet-id demo-subnet"
+node_ssh controller-mgmt "$AUTH; neutron lb-pool-create --lb-method ROUND_ROBIN --name test-lb$LB_NUMBER --protocol HTTP --subnet-id demo-subnet"
+
+echo "Checking if created pool is active."
+until node_ssh controller-mgmt "$AUTH; neutron lb-pool-list | grep test-lb$LB_NUMBER | grep -i ACTIVE" > /dev/null 2>&1; do
+    sleep 1
+done
+echo "Success."
+
+echo "neutron lb-pool-list"
+node_ssh controller-mgmt "$AUTH; neutron lb-pool-list"
+
+echo "neutron lb-pool-delete test-lb$LB_NUMBER"
+node_ssh controller-mgmt "$AUTH; neutron lb-pool-delete test-lb$LB_NUMBER"
+
+echo "neutron lb-pool-list"
+node_ssh controller-mgmt "$AUTH; neutron lb-pool-list"