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#Execute on the hypervisor:
  sudo useradd stack
  echo "stack:stack" | chpasswd
  echo "stack ALL=(root) NOPASSWD:ALL" | sudo tee -a /etc/sudoers.d/stack
  sudo chmod 0440 /etc/sudoers.d/stack
  su - stack

  sudo yum -y install epel-release
  sudo yum -y install yum-plugin-priorities
  ###
  #Change it for different OpenStack versions.
  sudo curl -o /etc/yum.repos.d/delorean-deps-liberty.repo http://trunk.rdoproject.org/centos7-liberty/delorean-deps.repo
  sudo curl -o /etc/yum.repos.d/delorean-liberty.repo https://trunk.rdoproject.org/centos7-liberty/current/delorean.repo
  ###
  sudo yum install -y instack-undercloud
  export NODE_DIST=centos7
  export NODE_CPU=4
  export NODE_MEM=8000
  export UNDERCLOUD_NODE_CPU=4
  export UNDERCLOUD_NODE_MEM=8000
  export NODE_COUNT=3
  ##Deploy 3 nodes overcloud + 1 undercloud
  sudo yum install -y instack-undercloud
  instack-virt-setup

  ##iptables -t nat -A PREROUTING -m tcp -p tcp --dport 2200 -j DNAT --to-destination `sudo virsh domifaddr instack | grep $(tripleo get-vm-mac instack) | awk '{print $4}' | sed 's/\/.*$//'`:22


#On the undercloud:
  #Now go to the undercloud node to install it. 
  ssh root@`sudo virsh domifaddr instack | grep $(tripleo get-vm-mac instack) | awk '{print $4}' | sed 's/\/.*$//'`
  
  su - stack
  sudo yum -y install yum-plugin-priorities
  export STABLE_RELEASE=liberty
  export USE_DELOREAN_TRUNK=1
  export DELOREAN_TRUNK_REPO="http://trunk.rdoproject.org/centos7-liberty/current/"
  export DELOREAN_REPO_FILE="delorean.repo"
  
  git clone -b stable/liberty https://github.com/openstack/tripleo-heat-templates
  git clone https://github.com/openstack-infra/tripleo-ci.git
  
  ./tripleo-ci/scripts/tripleo.sh --all
  #repo_setup
  #undercloud
  #overcloud_images
  #register_nodes
  #introspect_nodes
  #overcloud_deploy