prepare overcloud virtual test environment

prepare_cloud.sh

#!/bin/bash
set -x
set -e

source ~/overcloudrc

if ! test -f CentOS-7-x86_64-GenericCloud.qcow2;then
  wget http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.qcow2.xz
  unxz CentOS-7-x86_64-GenericCloud.qcow2.xz
fi

openstack image create --disk-format qcow2 \
  --container-format bare \
  --public --file CentOS-7-x86_64-GenericCloud.qcow2 \
  centos7-image

neutron net-create ext_net --provider:network_type vlan \
  --provider:physical_network=datacentre \
  --router:external true \
  --provider:segmentation_id 10

neutron subnet-create ext_net \
  --allocation-pool start=10.0.0.230,end=10.0.0.250 \
  --gateway 10.0.0.1 \
  --dns-nameserver 10.20.0.123 \
  10.0.0.0/24 --disable-dhcp

neutron net-create internal01
neutron subnet-create internal01 \
  --enable-dhcp \
  --dns-nameserver 10.20.0.123 \
  --name subnet01 192.168.168.0/24

neutron net-create internal02
neutron subnet-create internal02 \
  --enable-dhcp \
  --dns-nameserver 10.20.0.123 \
  --name subnet02 192.168.222.0/24

neutron router-create vr01
neutron router-gateway-set vr01 ext_net
neutron router-interface-add vr01 subnet01
neutron router-interface-add vr01 subnet02

openstack flavor create \
  --public m1.tiny \
  --id auto \
  --ram 1024 \
  --disk 10 \
  --vcpus 1 \
  --rxtx-factor 1

openstack keypair create \
  --public-key ~/.ssh/id_rsa.pub mykey01

# We need to ensure we're using admin project's security group
# because redundant default security groups are created.
# That causes the group rule create default to fail.
# Using the ID should make the commands succeed
ADMIN_PROJECTID=$(openstack project list|grep admin|awk {'print $2'})
SEC_GROUPID=$(openstack security group list|grep $ADMIN_PROJECTID|grep 'Default security group'|awk {'print $2'})
openstack security group rule create $SEC_GROUPID --protocol icmp
openstack security group rule create $SEC_GROUPID --dst-port 22

set +e
sudo iptables-save|grep BOOTSTACK|grep -q 10.0.0.0
if [ $? -ne 0 ];then
  sudo iptables -A BOOTSTACK_MASQ -s 10.0.0.0/24 ! -d 10.0.0.0/24 -j MASQUERADE -t nat
fi
set -e
nova boot vm01 \
  --flavor m1.tiny \
  --image centos7-image \
  --security-groups default \
  --nic net-name=internal01 \
  --key-name mykey01

nova boot vm02 \
  --flavor m1.tiny \
  --image centos7-image \
  --security-groups default \
  --nic net-name=internal02 \
  --key-name mykey01

echo Wait 5...
sleep 5

IP1=$(neutron floatingip-create ext_net | awk '$2 == "floating_ip_address" {print $4}')
IP2=$(neutron floatingip-create ext_net | awk '$2 == "floating_ip_address" {print $4}')

nova floating-ip-associate vm01 $IP1
nova floating-ip-associate vm02 $IP2