How can I increase the value of post_max_size strictly for phpMyAdmin?
I do not want to unnecessarily apply this directive change for all sites.
Also, is there a way to gracefully restart or reload php-fpm if one were to make a global directive change via one of the /etc/phpXX/*.ini? Or which service(s) should I restart/reload so that phpMyAdmin sees those changes?
Create a file named .user.ini in /var/www/html. It follows PHP-FPM configuration. Once you’ve adjusted upload_max_filesize + post_max_size you can restart the server PHP-FPM via systemctl restart php-fpm-MAIN.
You can also do this at database creation in the control panel through the “advanced” section.