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# SecureInstanceSetup # RHELSecureSetup
## Overview 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.
**SecureInstanceSetup** is a script designed to set up and secure a compute instance on RHEL-based distributions. This script ensures that your instance is up-to-date, secure, and ready for use.
## Features ## Features
- Updates the system packages. - Updates the package manager and upgrades installed packages.
- Sets the timezone and hostname. - Sets the system timezone.
- Modifies SSH configuration to enhance security. - Changes the hostname of the machine.
- Updates the `/etc/hosts` file with the instance's IP address and hostname. - Updates the `/etc/hosts` file with the machine's IP address and hostname.
- Prompts for a public SSH key for secure access. - 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 ## Prerequisites
- A RHEL-based Linux distribution (e.g., CentOS, Fedora, RHEL). - A RHEL-based Linux distribution (e.g., CentOS, Fedora).
- Root access or sudo privileges. - Root access or sudo privileges.
- `dnf` or `yum` package manager. - `dnf` or `yum` package manager.
- `curl` installed (if not present, please install it using your package manager).
## Usage ## Usage
1. **Clone the repository:** 1. **Clone the repository:**
```bash ```bash
git clone https://git.nickhepler.cloud/nick/RHELSecureInstanceSetup.git git clone https://git.nickhepler.cloud/nick/RHELSecureSetup.git
cd RHELSecureInstanceSetup cd RHELSecureSetup
``` ```
2. **Make the script executable:** 2. **Make the script executable**:
```bash ```bash
chmod +x update_system.sh chmod +x setup.sh
``` ```
3. **Run the script with root privileges:** 3. **Run the script with root privileges**:
```bash ```bash
sudo ./update_system.sh sudo ./setup.sh
``` ```
4. **Follow the prompts:** 4. **Follow the prompts**:
- Enter your public SSH key when prompted. - Enter your public SSH key when prompted.
- Choose whether to install Docker CE at the end of the script.
## Configuration ## Customization
- You can customize the `hostname` and `timezone` variables in the script as needed. - **Time Zone**: Modify the `timezone` variable in the script to set your desired time zone.
## License ## License
This project is licensed under the GNU General Public License v3.0 or later. See the [LICENSE](LICENSE) file for details. This project is licensed under the GPL-3.0 License. See the [LICENSE](LICENSE) file for more details.
## Contributing
Contributions are welcome! Please submit a pull request or open an issue for any enhancements or bug fixes.
## Acknowledgments ## Acknowledgments