ansible playbook to patch RHEL8

main.yml

---
- name: Patch server
  hosts: all
  become: true
  vars:
    packages_to_update:
      - package1
      - package2
      - package3
    lv_max_size: 3
  tasks:
  - include_role:
      name: lvm
    vars:
      lv_max_size: "{{ lv_max_size }}"
  - include_role:
      name: upgrade_packages
    vars:
      packages_to_update: "{{ packages_to_update }}"

patch.yml

---
- name: Patch server
  hosts: all
  become: true
  vars:
    packages_to_update:
      - package1
      - package2
      - package3
    lv_max_size: 3
  tasks:
  - name: Check if LVM commands are available
    command: which lvcreate
    register: lvm_check
    ignore_errors: true
  - name: Install LVM2 package
    yum:
      name: lvm2
      state: present
    when: lvm_check.rc != 0
  - name: Show current logical volume size
    command: lvs --noheadings --units g -o lv_size,lv_path | grep '/dev/mapper/system-var'
    register: lv_size_info
  - set_fact:
      current_lv_size: "{{ lv_size_info.stdout_lines[0].split()[0] }}"
  - name: Increase logical volume size
    lvm:
      vg: system
      lv: system-var
      size: +2g
    when: current_lv_size|float < lv_max_size
  - name: Resize the filesystem
    command: resizefs /dev/mapper/system-var
    when: lvm_check.rc == 0 and current_lv_size|float < lv_max_size
  - name: Upgrade packages
    yum:
      name: "{{ packages_to_update }}"
      state: latest
    when: packages_to_update is defined
  - name: Upgrade all packages
    yum:
      name: '*'
      state: latest
    when: packages_to_update is not defined

roles_lvm_tasks_main.yml

- name: Check if LVM commands are available
  command: which lvcreate
  register: lvm_check
  ignore_errors: true
- name: Install LVM2 package
  yum:
    name: lvm2
    state: present
  when: lvm_check.rc != 0
- name: Show current logical volume size
  command: lvs --noheadings --units g -o lv_size,lv_path | grep '/dev/mapper/system-var'
  register: lv_size_info
- set_fact:
    current_lv_size: "{{ lv_size_info.stdout_lines[0].split()[0] }}"
- name: Increase logical volume size
  lvm:
    vg: system
    lv: system-var
    size: +2g
  when: current_lv_size|float < lv_max_size
- name: Resize the filesystem
  command: resizefs /dev/mapper/system-var
  when: lvm_check.rc == 0 and current_lv_size|float < lv_max_size

upgrade_packages_tasks_main.yml

---
- name: Upgrade packages
  yum:
    name: "{{ packages_to_update }}"
    state: latest
  when: packages_to_update is defined
- name: Upgrade all packages
  yum:
    name: '*'
    state: latest
  when: packages_to_update is not defined