Ubuntu-Certification

PHP-FPM breaks WooCommerce API calls intermittently on Ubuntu 22.04

Asked by carljames

I'm running a WooCommerce store here: https://theoncloudshoes.com

Recently, I noticed a recurring issue where:

WooCommerce REST API calls (especially admin-ajax.php) time out

Logs show intermittent PHP-FPM child process failures

This impacts everything from cart updates to third-party plugin APIs

Steps to reproduce:

Install WooCommerce on a WordPress instance (PHP 8.1, Apache)

Use a plugin that makes regular AJAX calls (e.g., currency switchers, Cloudflare cache plugins)

Monitor /var/log/php8.1-fpm.log and watch for child process failures

This bug affects frontend behavior and causes random 502s.

System Info:

Ubuntu 22.04

Apache 2.4.52

PHP 8.1.2

WooCommerce latest

Please let me know if logs or config dumps are helpful. Thanks!

Question information

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Ubuntu-Certification Edit question
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Revision history for this message
Jeff Lane  (bladernr) said : 		#1

This really has nothing to do with hardware certification. This attached FAQ has some information on where to possibly get support for issues like what you’re describing.
FAQ #1945: “Where can I get help or technical support?”.

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