terraform-hcloud-kube-hetzner/modules/host/templates/userdata.yaml.tpl

#cloud-config

# Resize /var, not /, as that's the last partition in MicroOS image.
growpart:
    devices: ["/var"]

write_files:

# Configure private network
- content: |
    BOOTPROTO='dhcp'
    STARTMODE='auto'
  path: /etc/sysconfig/network/ifcfg-eth1

# Disable ssh password authentication
- content: |
    PasswordAuthentication no
    X11Forwarding no
    MaxAuthTries 2
    AllowTcpForwarding no
    AllowAgentForwarding no
    AuthorizedKeysFile .ssh/authorized_keys
  path: /etc/ssh/sshd_config.d/kube-hetzner.conf

# Setting the right reboot mode
- content: | 
    REBOOT_METHOD=rebootmgr
  path: /etc/transactional-update.conf

# Add ssh authorized keys
ssh_authorized_keys:
%{ for key in sshAuthorizedKeys ~}
  - ${key}
%{ endfor ~}

runcmd:
  # Activate the private network
  - systemctl reload network

  # Activate ssh configuration
  - systemctl reload sshd

  # Fix hostname (during first boot)
  - hostnamectl hostname ${hostname}

  # Finishing automatic reboot via Kured setup
  - rebootmgrctl set-strategy off