FPM

FastCGI Process Manager

Links

• Documentation
• Switching to FPM on Ubuntu/Debian

Monitoring PHP-FPM

• https://www.php.net/manual/en/fpm.status.php
• Zabbix monitoring php-fpm

FAQ

proxy_fcgi AH01071: Got error 'Primary script unknown'

The fcgi 404

AH01079: failed to make connection to backend: httpd-UDS

USB = Unix Domain Socket, look for logging/config about the socket involved