ansible/playbooks/00_initial_adjustments.yml

- hosts: odroid_cluster
  name: Initial Adjustments
  become: true
  gather_facts: yes
  vars:
    iface: "eth0"
  tasks:
    - name: Debug
      ansible.builtin.debug:
        msg: "{{ ansible_default_ipv4.interface }}"
      
    - name: Reconfigure /root/.bashrc
      ansible.builtin.lineinfile:
        path: /root/.bashrc
        line: "export HISTCONTROL=ignoreboth"
    - name: Reconfigure /home/jd/.bashrc
      ansible.builtin.lineinfile:
        path: /home/jd/.bashrc
        line: "export HISTCONTROL=ignoreboth"
    - name: Set a hostname
      ansible.builtin.hostname:
        name: >-
          {%- if ansible_eth0.macaddress == "00:1e:06:48:cd:8e" -%}
          odroidc4-1
          {%- elif ansible_eth0.macaddress == "00:1e:06:48:d0:00" -%}
          odroidc4-2
          {%- elif ansible_eth0.macaddress == "00:1e:06:48:d0:01" -%}
          odroidc4-3
          {%- elif ansible_eth0.macaddress == "00:1e:06:48:cd:86" -%}
          odroidc4-4
          {%- elif ansible_eth0.macaddress == "00:1e:06:48:b3:0c" -%}
          odroidc4-5
          {%- endif -%}
      when: ansible_default_ipv4.interface == "eth0"
    - name: Set a hostname
      ansible.builtin.hostname:
        name: >-
          {%- if ansible_end0.macaddress == "00:1e:06:48:cd:8e" -%}
          odroidc4-1
          {%- elif ansible_end0.macaddress == "00:1e:06:48:d0:00" -%}
          odroidc4-2
          {%- elif ansible_end0.macaddress == "00:1e:06:48:d0:01" -%}
          odroidc4-3
          {%- elif ansible_end0.macaddress == "00:1e:06:48:cd:86" -%}
          odroidc4-4
          {%- elif ansible_end0.macaddress == "00:1e:06:48:b3:0c" -%}
          odroidc4-5
          {%- endif -%}
      when: ansible_default_ipv4.interface == "end0"
    - name: Iptables 1
      ansible.builtin.command:
        iptables -F
      ignore_errors: yes
    - name: Iptables 2
      ansible.builtin.command:
        update-alternatives --set iptables /usr/sbin/iptables-legacy 
      ignore_errors: yes
    - name: Iptables 3
      ansible.builtin.command:
        update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
      ignore_errors: yes