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#!/usr/bin/env bash
set -ex
# Sample ``local.sh`` that configures two simple webserver instances and sets
# up a Neutron LBaaS Version 2 loadbalancer backed by Octavia.
# Keep track of the DevStack directory
TOP_DIR=$(cd $(dirname "$0") && pwd)
BOOT_DELAY=60
# Import common functions
source ${TOP_DIR}/functions
# Use openrc + stackrc for settings
source ${TOP_DIR}/stackrc
# Destination path for installation ``DEST``
DEST=${DEST:-/opt/stack}
# Polling functions
function wait_for_loadbalancer_active {
lb_name=$1
while [ $(openstack loadbalancer show $lb_name -f value -c provisioning_status) != "ACTIVE" ]; do
sleep 2
done
}
if is_service_enabled nova; then
# Unset DOMAIN env variables that are not needed for keystone v2 and set OpenStack demo user auth
unset OS_USER_DOMAIN_ID
unset OS_PROJECT_DOMAIN_ID
source ${TOP_DIR}/openrc demo demo
# Create an SSH key to use for the instances
DEVSTACK_LBAAS_SSH_KEY_NAME=DEVSTACK_LBAAS_SSH_KEY_RSA
DEVSTACK_LBAAS_SSH_KEY_DIR=${TOP_DIR}
DEVSTACK_LBAAS_SSH_KEY=${DEVSTACK_LBAAS_SSH_KEY_DIR}/${DEVSTACK_LBAAS_SSH_KEY_NAME}
rm -f ${DEVSTACK_LBAAS_SSH_KEY}.pub ${DEVSTACK_LBAAS_SSH_KEY}
ssh-keygen -b 2048 -t rsa -f ${DEVSTACK_LBAAS_SSH_KEY} -N ""
openstack keypair create --public-key=${DEVSTACK_LBAAS_SSH_KEY}.pub ${DEVSTACK_LBAAS_SSH_KEY_NAME}
# Add tcp/22,80 and icmp to default security group
openstack security group rule create --protocol tcp --dst-port 22:22 default
openstack security group rule create --protocol tcp --dst-port 80:80 default
openstack security group rule create --protocol icmp default
# Boot some instances
NOVA_BOOT_ARGS="--key-name ${DEVSTACK_LBAAS_SSH_KEY_NAME} --image $(openstack image show cirros-0.5.1-x86_64-disk -f value -c id) --flavor 1 --nic net-id=$(openstack network show private -f value -c id)"
openstack server create ${NOVA_BOOT_ARGS} node1
openstack server create ${NOVA_BOOT_ARGS} node2
echo "Waiting ${BOOT_DELAY} seconds for instances to boot"
sleep ${BOOT_DELAY}
IP1=$(openstack server show node1 | awk '/private/ {ip = substr($4, 9, length($4)-9) ; if (ip ~ "\\.") print ip ; else print $5}')
IP2=$(openstack server show node2 | awk '/private/ {ip = substr($4, 9, length($4)-9) ; if (ip ~ "\\.") print ip ; else print $5}')
touch ~/.ssh/known_hosts
ssh-keygen -R ${IP1}
ssh-keygen -R ${IP2}
# Get Neutron router namespace details
NAMESPACE_NAME='qrouter-'$(openstack router show router1 -f value -c id)
NAMESPACE_CMD_PREFIX='sudo ip netns exec'
# Run a simple web server on the instances
chmod 0755 ${TOP_DIR}/webserver.sh
$NAMESPACE_CMD_PREFIX $NAMESPACE_NAME scp -i ${DEVSTACK_LBAAS_SSH_KEY} -o StrictHostKeyChecking=no ${TOP_DIR}/webserver.sh cirros@${IP1}:webserver.sh
$NAMESPACE_CMD_PREFIX $NAMESPACE_NAME scp -i ${DEVSTACK_LBAAS_SSH_KEY} -o StrictHostKeyChecking=no ${TOP_DIR}/webserver.sh cirros@${IP2}:webserver.sh
$NAMESPACE_CMD_PREFIX $NAMESPACE_NAME ssh -o UserKnownHostsFile=/dev/null -i ${DEVSTACK_LBAAS_SSH_KEY} -o StrictHostKeyChecking=no -q cirros@${IP1} "screen -d -m sh webserver.sh"
$NAMESPACE_CMD_PREFIX $NAMESPACE_NAME ssh -o UserKnownHostsFile=/dev/null -i ${DEVSTACK_LBAAS_SSH_KEY} -o StrictHostKeyChecking=no -q cirros@${IP2} "screen -d -m sh webserver.sh"
fi
if is_service_enabled octavia; then
SUBNET_ID=$(openstack subnet show private-subnet -f value -c id)
openstack loadbalancer create --name lb1 --vip-subnet-id $SUBNET_ID
wait_for_loadbalancer_active lb1
openstack loadbalancer listener create lb1 --protocol HTTP --protocol-port 80 --name listener1
wait_for_loadbalancer_active lb1
openstack loadbalancer pool create --lb-algorithm ROUND_ROBIN --listener listener1 --protocol HTTP --name pool1
wait_for_loadbalancer_active lb1
openstack loadbalancer member create --subnet-id $SUBNET_ID --address ${IP1} --protocol-port 80 pool1
wait_for_loadbalancer_active lb1
openstack loadbalancer member create --subnet-id $SUBNET_ID --address ${IP2} --protocol-port 80 pool1
fi
echo "How to test load balancing:"
echo ""
echo "${NAMESPACE_CMD_PREFIX} ${NAMESPACE_NAME} curl $(openstack loadbalancer show lb1 -f value -c vip_address)"
echo ""
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