RHELSecureSetup

This Bash script is designed for RHEL-based Linux distributions. It automates the process of updating the system, configuring security settings, and optionally installing Docker CE.

Features

• Updates the package manager and upgrades installed packages.
• Sets the system timezone.
• Changes the hostname of the machine.
• Updates the /etc/hosts file with the machine's IP address and hostname.
• Modifies SSH configuration for better security:
  • Disables root login.
  • Disables password authentication.
  • Ensures IPv4 address family is not commented out.
• Optionally installs Docker using the official installation script.

Prerequisites

• A RHEL-based Linux distribution (e.g., CentOS, Fedora).
• Root access or sudo privileges.
• dnf or yum package manager.
• curl installed (if not present, please install it using your package manager).

Usage

1. Clone the repository:

   git clone https://git.nickhepler.cloud/nick/RHELSecureSetup.git
   cd RHELSecureSetup
   

2. Make the script executable:

   chmod +x setup.sh
   

3. Run the script with root privileges:

   sudo ./setup.sh
   

4. Follow the prompts:

   • Enter your public SSH key when prompted.
   • Choose whether to install Docker CE at the end of the script.

Customization

• Time Zone: Modify the timezone variable in the script to set your desired time zone.

License

This project is licensed under the GPL-3.0 License. See the LICENSE file for more details.

Acknowledgments

• Inspired by the documentation from Akamai (formerly Linode) for setting up and securing compute instances.