How to fix 504 server error due to prestashop?

Question

PHP

In Prestashop's admin area, there is a "REGENERATE Thumbnails" section.
Like when you try to recreate both all the pictures at once, and separately (images, formats), even without deleting old images (Delete old images - NO), the server crashes in 504.
How to fix this problem?
Server:
4 cores 1200MHz
RAM: 8GB
HDD: 80GB SSD
Added execution time in php, apache and nginx to 600 seconds, but the error appears after 60. For some reason, nginx does not accept parameters. - Didn't work
Compressed images without loss of quality with linux utility, regenerated images, still 504
Maybe there is some batch tool in Prestashop to recreate thumbnails?

Answer 1

If the server is your own, then it will be easier to deal with the max_execution_time parameter. On hosting, this parameter should not be increased more than 120 seconds (usually).
You can try to run the _regenerateThumbnails function from controllers/admin/AdminImagesController.php via the console by packing it into a file:

<?php
//в корень сайта!!!
include(dirname(__FILE__).'/config/config.inc.php');
include(dirname(__FILE__).'/init.php');

_regenerateThumbnails('all', true);
 
echo 'Done!';
?>

This code has not been tested.
Or you can make the _regenerateThumbnails function work only for an ID interval - one that does not cause a timeout on the server. And change this interval. For example, first 1-500, 501-1000, etc.
I did it, it works.

Answer 2

I suggest looking in the code for a method that recreates thumbnails and write a php script that uses this method (I did this for open real estate cms ). Run everything in console.