OPcache Auto Configuration Script

Overview

This script automates the detection of installed PHP versions on a server and configures OPcache settings based on server resources (RAM and CPU) and workload type (Shared Hosting, High-Traffic Website, or E-commerce). The script also applies changes to the respective configuration files and restarts the web server to activate the new settings.

Features

• Dynamic Resource-Based Configuration: Automatically adjusts OPcache memory and settings based on server RAM and the selected workload type.
• Support for Multiple PHP Versions: Detects and applies configurations to all installed PHP versions.
• Admin Prompt: Asks the admin to specify the server's workload type for optimized settings.
• Web Server Restart: Restarts LiteSpeed or Apache after applying the configuration.

Supported Environments

• Operating Systems: Linux-based systems (e.g., CentOS, AlmaLinux, CloudLinux).
• Web Servers: LiteSpeed, Apache.
• PHP Management: Supports PHP installations managed by cPanel and CloudLinux.

Workload Types

1. Shared Hosting:

   • Optimized for multi-tenant environments.
   • Lower memory usage and higher revalidation frequency.

2. High-Traffic Website:

   • Optimized for websites with high concurrent users.
   • Increased OPcache memory and lower revalidation frequency.

3. E-commerce:

   • Designed for performance-critical e-commerce platforms.
   • Maximum memory allocation and zero revalidation frequency for stability.

How to Use

1. Download the Script: Save the script as opcache_auto_config.sh.

2. Make the Script Executable:

   chmod +x opcache_auto_config.sh

3. Run the Script: Execute the script with root privileges:

   sudo ./opcache_auto_config.sh

4. Follow the Prompts:

   • Select the server workload type (Shared Hosting, High-Traffic Website, or E-commerce).
   • The script will automatically configure OPcache for all detected PHP versions.

5. Verify the Configuration:

   • Check the OPcache settings by running:

     php -i | grep opcache

   • Verify the web server is running:

     systemctl status lsws

     or

     systemctl status httpd

OPcache Configuration

The script applies the following settings dynamically based on server resources and workload type:

Setting	Shared Hosting	High-Traffic Website	E-commerce
opcache.memory_consumption	128 MB	128-512 MB	128-512 MB
opcache.max_accelerated_files	10,000	20,000	30,000
opcache.revalidate_freq	60 seconds	1 second	0 seconds

Logs

The script logs OPcache-related errors and messages to /var/log/opcache.log.

Troubleshooting

• Permission Errors: Ensure the script has write access to PHP configuration files.
• Web Server Not Restarting: Restart the server manually if the script fails to detect it.
• Invalid Workload Type: Enter a valid option (1, 2, or 3) when prompted.

Contributions

Feel free to contribute by suggesting improvements or submitting pull requests. This project aims to simplify and optimize OPcache configuration for diverse workloads.