Dodgy client takes whole instance offline

ℹ️ Support
,
1

The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • 31.0.4
  • Operating system and version (e.g., Ubuntu 24.04):
    • Debian 12
  • Web server and version (e.g, Apache 2.4.25):
    • apache2.4
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • nginx
  • PHP version (e.g, 8.3):
    • 8.4
  • Is this the first time you’ve seen this error? (Yes / No):
    • Yes
  • When did this problem seem to first start?
    • today
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • manual install in a Proxmox Debian VM
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • No

Summary of the issue you are facing:

[When a client with a dodgy Internet connection connects and attempts to sync and download videos, it’ll take the whole Nextcloud instance offline for all users.]

Steps to replicate it (hint: details matter!):

  1. Go to a festival with tons of people
  2. Connect to nextcloud
  3. Tell it to download videos

After some minutes, the instance becomes available again.

What log entries or settings should I look for?

Imo. it seems some timeout issue.

2

Then go through the logs which one creates the timeout. You can start with the Nextcloud logs, or server logs, php logs (if you have separate ones), database, system logs, …

The server should have a better connection than the clients. If you are on a residential internet connection and you might go through a very slow upstream connection which might block or slow down downloads for the clients.