php fpm stops accepting requests

[slushpuppy]

Hi
I got a collection of docker containers running a variety of versions from php 7.4 to 8.1. I have encountered an intermittent problem where sometimes nginx cannot connect to the fastcgi worker with the error recv() failed (104: Connection reset by peer). The only solution is to restart the container. I am able to bash exec into the container. What debugging steps should I perform next?

[wglambert]

You might be hitting memory or other resource limits on the php container? It should have logs for any errors.
If you want phpdbg it's a simple derivative Dockerfile to install it in the image #1260 (comment)

You could also try asking over at the Docker Community Forums, Docker Community Slack, or Stack Overflow. Since these repos aren't really a user-help forum