| # All the data below will be stored as a string object
  #cloud-config, see http://cloudinit.readthedocs.io/en/latest/topics/examples.html

  ssh_pwauth: True
  users:
   - name: root
     sudo: ALL=(ALL) NOPASSWD:ALL
     shell: /bin/bash
     ssh_authorized_keys:
     {% for key in config.underlay.ssh_keys %}
      - ssh-rsa {{ key['public'] }}
     {% endfor %}

  disable_root: false
  chpasswd:
   list: |
    root:r00tme
   expire: False

  bootcmd:
   # Block access to SSH while node is preparing
   - cloud-init-per once sudo iptables -A INPUT -p tcp --dport 22 -j DROP
   # Enable root access
   - sed -i -e '/^PermitRootLogin/s/^.*$/PermitRootLogin yes/' /etc/ssh/sshd_config
   - service sshd restart
  output:
    all: '| tee -a /var/log/cloud-init-output.log /dev/tty0'

  runcmd:
   # Mount config drive
   - mkdir /root/config-drive
   - mount /dev/sr0 /root/config-drive

   # Create swap
   - fallocate -l 4G /swapfile
   - chmod 600 /swapfile
   - mkswap /swapfile
   - swapon /swapfile
   - echo "/swapfile   none    swap    defaults    0   0" >> /etc/fstab

   # Run user data script from config drive
   - cd /root/config-drive && /bin/bash -xe ./user-data

   # Enable root access
   - sed -i -e '/^PermitRootLogin/s/^.*$/PermitRootLogin yes/' /etc/ssh/sshd_config

   ########################################################
   # Node is ready, allow SSH access
   - echo "Allow SSH access ..."
   - sudo iptables -D INPUT -p tcp --dport 22 -j DROP
   - touch /is_cloud_init_finish
   ########################################################

  write_files:
   - path: /root/.ssh/config
     owner: root:root
     permissions: '0600'
     content: |
          Host *
            ServerAliveInterval 300
            ServerAliveCountMax 10
            StrictHostKeyChecking no
            UserKnownHostsFile /dev/null