CentOS7x_Apply-OS-Updates-playbook.yml

---

################################################################################
#  description: Installs/applies OS updates and patches on CentOS7x
#  usage: ansible-playbook CentOS7x_Apply-OS-Updates-playbook.yml --extra-vars 'HostOrGroup=YourServerOrGroupNameGoesHere'
#  author: Ernest G. Wilson II <ErnestGWilsonII@gmail.com> (https://github.com/ernestgwilsonii)
#  license: MIT
################################################################################


# Ansible Playbook options
# REF: http://docs.ansible.com/ansible/playbooks.html
#####################################################

- name: Apply OS updates and patches on CentOS7x
  hosts: "{{ HostOrGroup|default ('FATAL ERROR --> HostOrGroup NOT SET! You must specify either a Host or a Group name!') }}"
  serial: "100%"
  gather_facts: False
  tasks:


# Install yum packages
# REF: http://docs.ansible.com/ansible/yum_module.html
######################################################

  - name: Update / upgrade all existing installed packages
    yum:
      name=*
      state=latest

  - name: Install yum-utils if that package is not already present or update existing if needed
    yum:
      name=yum-utils
      state=latest

  - name: Install yum-cron if that package is not already present or update existing if needed
    yum:
      name=yum-cron
      state=latest


# Execute command(s)
# REF: http://docs.ansible.com/ansible/command_module.html
##########################################################

  - name: Remove old kernels from the OS keeping only the current and last most recent one
    command: /usr/bin/package-cleanup --oldkernels --count=1 -y