Resolving Nginx 502 Bad Gateway with PHP-FPM Unix Socket on Debian 12 Bookworm
Fix Nginx 502 Bad Gateway errors on Debian 12 Bookworm caused by PHP-FPM Unix socket misconfigurations or resource issues. A comprehensive troubleshooting guide.
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#502 bad gateway Solutions
Browse all server troubleshooting guides and configuration walkthroughs tagged with #502 bad gateway.
PHP-FPM Socket Permission Denied: Nginx User/Group Mismatch on CentOS Stream / Rocky Linux
Resolve 'permission denied' errors between Nginx and PHP-FPM Unix sockets on CentOS Stream/Rocky Linux, often leading to 502 Bad Gateway. Fix user/group mismatches and SELinux.
Troubleshooting PHP-FPM Socket Permission Denied: Nginx User/Group Mismatch on Alpine Linux
Resolve 'PHP-FPM socket permission denied' errors on Alpine Linux caused by Nginx and PHP-FPM user/group mismatches. Fix your 502 Bad Gateway now!
Troubleshooting PHP-FPM Socket Permission Denied: Nginx User/Group Mismatch on Ubuntu 20.04 LTS
Resolve 'Permission denied' errors between Nginx and PHP-FPM on Ubuntu 20.04 LTS. This guide addresses common user and group mismatch issues preventing proper socket access.
Fixing Nginx 502 Bad Gateway with PHP-FPM Unix Socket & TCP Pools (Ubuntu, Debian, Alpine, WSL2)
Comprehensive troubleshooting guide for connect() to unix:/var/run/php/php-fpm.sock failed (111: Connection refused). Learn root causes, system traces, and verified resolutions.
Nginx Worker Process Permissions Denied Opening Unix Socket on WSL2 Ubuntu
Troubleshoot 'permissions denied' when Nginx worker processes fail to open a Unix socket on Windows WSL2 Ubuntu. Fix PHP-FPM and directory permissions.
Resolving Nginx FastCGI Buffer Size Exceeded: Response Header Too Large on Debian 12 Bookworm
Fix the 'FastCGI buffer size exceeded' error on Nginx with PHP-FPM on Debian 12. Adjust Nginx and PHP-FPM buffer settings for large HTTP headers.
Fixing PHP-FPM Socket Permission Denied: Nginx User/Group Mismatch on Ubuntu 22.04 LTS
Resolve Nginx 502 Bad Gateway errors caused by PHP-FPM Unix socket permission issues on Ubuntu 22.04 LTS by correcting user, group, and listen mode configurations.