- hosts: 'puppet4'
  name: "Puppet-version: install puppet-4 on puppet-4 hosts"
  gather_facts: false
  tasks:
  - name: "Check if puppet 4 is already installed"
    stat:
      path: /opt/puppetlabs/puppet/bin/puppet
    register: puppet4_bin_path
  - name: "Get puppet installation script"
    get_url:
      url: http://git.openstack.org/cgit/openstack-infra/system-config/plain/install_puppet.sh
      dest: /tmp/install_puppet.sh
      mode: 0755
      checksum: sha256:741b8cfdc039e817bd598511dd7203da16701f213775e639994e8bb278a68239
    when: not puppet4_bin_path.stat.exists
  - name: "Install puppet 4 if not already installed"
    shell: /tmp/install_puppet.sh
    environment:
      PUPPET_VERSION: 4
    when: not puppet4_bin_path.stat.exists