Netplan private ip only configs

Disable cloud-init network config

With Ansible

- name: Disable cloud-init network config
  copy:
    dest: "/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg"
    content: |
      network: {config: disabled}

With CLI

bash echo "network: {config: disabled}" > /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg

General suggestions

In some versions use this for IP address:

      addresses: [192.168.11.13/24]

In some versions you have to use default for the route:

      routes:
        - to: default
          via: 192.168.11.1

Netplan Hetzner private only config

Don’t forget they use a /32 netmask!

network:
  version: 2
  renderer: networkd
  ethernets:
    ens10:
      optional: false
      addresses: 
      - 10.10.1.6/32
      routes:
      - to: 0.0.0.0/0
        via: 10.10.1.1
        on-link: true
      nameservers:
        addresses: [8.8.8.8]
      dhcp4: no
      dhcp6: no

Netplan private IP with Ansible

Useful vars:

tasks:
  - debug: var=ansible_all_ipv4_addresses
  - debug: var=ansible_default_ipv4.address
  - debug: var=hostvars[inventory_hostname]['ansible_default_ipv4']['address']

- name: Set gateway on nodes
  gather_facts: yes
  hosts: nodes
  roles:
    - role: mrlesmithjr.netplan
      #when: ansible_distribution == 'Ubuntu' and ansible_distribution_release == 'jammy'
      netplan_enabled: true
      netplan_config_file: /etc/netplan/01-netcfg.yaml
      netplan_renderer: networkd
      # Configuration defined bellow will be written to the file defined
      # above in `netplan_config_file`.
      netplan_configuration:
        network:
          version: 2
          renderer: networkd
          ethernets:
            ens10:
              optional: false
              addresses: ["/32"]
              nameservers:
                addresses: [8.8.8.8]
              routes:
              - to: 0.0.0.0/0
                via: 10.10.1.1
                on-link: true
              dhcp4: no
              dhcp6: no