Ubuntu server can't connect to some sites when qbittorrent is running
Hey all, ran into a weird issue with my Ubuntu server running qbittorrent-nox I can't seem to figure out.
When Qbittorrent is running, I can't load some sites. How I discovered this was Jackett was failing tests to my trackers. Sometimes all trackers would fail, other times only a couple would.
From the server I ran a curl to the tracker URLs and confirmed they were not loading.
Pcap shows the TLS hello go out, but no response from the server.
Once I kill the qbittorrent process, everything works.
Wondering if anyone has any ideas or has seen this issue before.
Things I've tried:
Disabled ipv6
Changed Qbit UI port
Paused Torrents
re-installed openssl
rebooted about 150 times and counting
Qbit version is 4.5.5
Ubuntu 22.04.3 headless running on Esxi
Appreciate any ideas!
Edit: So after much frustration and some other weird things, restored to a previous snapshot and the issue seems to have resolved. Appreciate all the troubleshooting ideas and responses!
Do you currently have a bunch of active torrents, each with a bunch of connected peers? What's your network topology like? Aging combo modem/wifi/router? Have you tried limiting the total number of connected peers in your torrent manager? Torrents can really clog up a network. Sometimes routing too many connections overwhelmed my old router, forcing a reboot before any traffic could get through again.