CentOS Initial Setup (Home Lab Only)

This repository contains configuration files and an Ansible playbook for the initial setup of CentOS systems, leveraging a dedicated Ansible role.

⚠️ Disclaimer: This setup is intended for testing and development environments only. It is not recommended for production use. Please review, adapt, and harden any configurations before deploying to production.

Usage

Ensure your inventory.ini is configured. If you already have SSH key access to root, you can safely run this playbook using the provided Docker command:

docker run -it --rm \
  -v ~/.ssh:/root/.ssh \
  -v $(pwd):/apps \
  -w /apps \
  alpine/ansible:2.17.0 \
  ansible-playbook -i inventory.ini setup.yaml

The playbook uses the centos_init_setup role. You can configure the new_user and ssh_public_key variables in roles/centos_init_setup/defaults/main.yml, or override them via command line (-e "new_user=your_user") or host_vars. For ssh_public_key, you can provide the key directly or a path to a public key file (e.g., ~/.ssh/id_rsa.pub).

Notes

The playbook will:

• Update the system packages
• Create a sudo user with SSH key access
• Harden basic SSH settings (disable root login, password authentication)
• Configure automatic updates (by default it's off(commented out), but you can enable it by uncommenting the relevant lines in roles/centos_init_setup/tasks/system.yml)
• Configure a pretty PS1 and aliases

Always test in a non-production environment first.