configure-static-network-params.yml

---
- name: Configure Static IP
  hosts: localhost
  connection: local
  become: true

  # To customize variable values, use --extra-vars when running to override.
  # For example:
  #   ansible-playbook --extra-vars "ip=192.168.1.100 hostname=mypi"
  vars:
    ip: "{{ ansible_default_ipv4.address }}"
    netmask: "{{ ansible_default_ipv4.netmask }}"
    gateway: "{{ ansible_default_ipv4.gateway }}"
    primary_dns: "{{ ansible_dns.nameservers[0] }}"
    secondary_dns: 1.1.1.1
    hostname: "{{ ansible_hostname }}"
    domain: home

  tasks:
  - name: Checking IP address
    debug:
      msg: "The IP address hasn't changed. (Still using: {{ ip }}) Are you sure you don't want to customize using --extra-vars?"
    when: ip == ansible_default_ipv4.address

  - name: Checking Hostname
    debug:
      msg: "The hostname hasn't changed. (Still using: {{ hostname }}) Are you sure you don't want to customize using --extra-vars?"
    when: hostname == ansible_hostname

  - name: Configuring network interface parameters
    ansible.builtin.copy:
      dest: /etc/network/interfaces.d/eth0
      content: |
        auto eth0
        allow-hotplug eth0
        iface eth0 inet static
        address {{ ip }}
        netmask {{ netmask }}
        gateway {{ gateway }}
        dns-nameservers {{ primary_dns }} {{ secondary_dns }}
        dns-search {{ domain }}

  - name: Disabling DHCP
    ansible.builtin.service:
      name: dhcpcd
      state: stopped
      enabled: no

  - name: Setting the hostname
    ansible.builtin.hostname:
      name: "{{ hostname }}.{{ domain }}"

  - name: Creating /etc/hosts
    ansible.builtin.copy:
      dest: /etc/hosts
      backup: yes
      content: |
        127.0.0.1  localhost
        {{ ip }}  {{ hostname }}.{{ domain }} {{ hostname }}

  - name: Reboot to active changes
    debug:
      msg: You must reboot for changes to take effect.