Ansible Role: Configure Hosts

Configures RHEL/CentOS servers and updates their packages.

Requirements

SSH trafic must be up and running between ansible control node and the servers.

Role Variables

For the entire list of variables, see defaults/main.yml.

Role's behavior/actions are controlled by these booleans:

---
# tasks variables
copy_hosts_file: false # copy hosts file to remote hosts
copy_ssh_key: false # configure public ssh key in remotes
speedup_dnf: false # configure dnf speed-ups
max_parallel_downloads: 3 # configure dnf parallel downloads speed-up
install_packages: false # install packages
update_host: false # preform a system-wide update
clean_subscription: true # clean RHEL subscription after package installs and updates

These variables controll configuration contents:

# user variables
home_dir: /root
ssh_key_name: id_ed25519.pub
ssh_key: "{{ home_dir }}/.ssh/{{ ssh_key_name }}"

user_name: admin # user name to be created
user_pass: admin # user password
keyboard_layout: fr # change default keyboard layout

# custom aliases to configure on remotes
bashrc_aliases: |
  # general aliases
  alias psg="ps aux | grep -v grep | grep"
  alias ...
  alias ...

# RHEL machine subscriptions
redhat_username: redhat_access_login
redhat_password: redhat_access_pass
subscription_pool: 8a82c58b81d513980181dd125a771945 # Developer subscription

# packages to install
packages:
  - vim
  - wget
  - curl
  - ...

Note: user_name, user_pass, redhat_username and redhat_password variables should be defined in vault-crypted file(s).

Dependencies

Only ansible is needed to run this role.

Example Playbook

You can use this role with this basic playbook.

---
- name: Configure vm
  hosts: vm_guests
  remote_user: root

  tasks:
    - name: Include role host_configure
      ansible.builtin.include_role:
        name: ansible-role-configure-hosts
      vars:
        copy_ssh_key: true
        speedup_dnf: true
        install_packages: true
        clean_subscription: false

License

BSD