Fossils

This tool is a diagnostic and resolution guide for the 502 Bad Gateway error, a common HTTP status code indicating a communication failure between servers. It is designed for website administrators, developers, and hosting support teams who need to quickly identify and fix the underlying cause of this disruptive error.

• Error Identification explains what triggers a 502 error, typically a failed request from an origin server to an upstream server like a PHP processor.
• Step-by-Step Troubleshooting provides a logical sequence of checks, from reloading the page to investigating server and application logs.
• Common Fixes outlines actionable solutions for frequent culprits, including restarting web services, checking for resource overload, and reviewing firewall configurations.
• Preventive Measures offers guidance on configuring timeouts, monitoring server health, and implementing proper caching to reduce future occurrences.