---
# Check disk usage (read-only) and warn above threshold.
# Run: ansible-playbook -i inventory/hosts.yml playbooks/bf-disk-check.yml --limit lab
# Threshold overridable: -e disk_warn_pct=80.
# No Semaphore Pro feature is used.
- name: Check disk usage
  hosts: blueforce
  gather_facts: false
  vars:
    disk_warning_percent: "{{ disk_warn_pct | default(80) }}"
  tasks:
    - name: Get disk usage
      ansible.builtin.command: df -h --output=source,pcent,target
      register: df_out
      changed_when: false

    - name: Show disk usage
      ansible.builtin.debug:
        msg: "{{ inventory_hostname }}:\n{{ df_out.stdout }}"

    - name: Get root filesystem usage percentage
      ansible.builtin.shell: "df --output=pcent / | tail -n 1 | tr -dc '0-9'"
      register: root_pct
      changed_when: false

    - name: Flag hosts above threshold
      ansible.builtin.debug:
        msg: "WARNING {{ inventory_hostname }} root disk {{ root_pct.stdout }}% exceeds {{ disk_warning_percent }}%"
      when: root_pct.stdout | int >= (disk_warning_percent | int)