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LEMP on Ubuntu
LEMP on Ubuntu LEMP on Ubuntu = Linux + Nginx + MySQL + PHP-FPM. Nginx talks to PHP through a socket file in /run/php/. The socket name has the PHP version, like php8.3-fpm.sock . An old name copied from the internet gives 502 Bad Gateway . Check the real name with ls /run/php/ and put that exact na
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What it is
LEMP on Ubuntu = Linux + Nginx + MySQL + PHP-FPM.
Nginx talks to PHP through a socket file in /run/php/.
Common mistake
The socket name has the PHP version, like php8.3-fpm.sock. An old name copied from the internet gives 502 Bad Gateway.
Fix
Check the real name with ls /run/php/ and put that exact name in the config.
Learn more in the lesson: 9.6 LEMP on Ubuntu