From NUC 1, log in to the Ansible control node, NUC 2.

We are going to create and run an Ansible playbook to check the CMOS battery health on the nodes

Steps:

1. Create file /home/ansible/my-project/cmos-check.yml

   • cmos-check.yml

     - hosts: nodes
       become: true
       become_user: root
       tasks:
         - name: CMOS battery health
           lineinfile:
             dest: /proc/drive/rtc
             line: "batt_status	: okay"
           check_mode: yes
           register: presence
           failed_when: presence.changed

2. Test the playbook
   • ansible-playbook -i hosts cmos-check.yml