Hi guys, I recently had a problem starting taiga with docker (something permissions related) which led to me uninstalling snap-based docker and installing it via an apt repo. Ever since then, whenever I start mailcow, it starts up fine but after some time I lose access to my server, all my websites are down, no Ping, no ssh access, no nada. When I restart and stop the mailcow container on time, this problem doesn’t occur anymore. I’ve read somewhere that this might have to do something with how docker modifies iptables and can conflict with ufw but I’m actually totally clueless as to what the underlying issue here could be. I wouldn’t even know where to start looking. My server is a Hetzner root server running Ubuntu 22.04.5 LTS, I am running a LEMP stack for some smaller web applications, a node server, redis, mysql. but all of these bare metal. As for docker containers I’m currently only running taiga and trying to run mailcow. System resources should be okay, this machine has 64gigs of ram and an i7-7700 and is basically running nothing; my system resources are always around max 5% of usage.
As for the UFW- Thing; up until a month ago dockerized mailcow was working flawlessly. I also tried resetting mailcow to some earlier commit (486b2974092dc5a42178204ff587650a8452c9c0 from around may) back when everything was still working which started the server but somehow I didn’t see any output. But at least it didn’t crash my server. I might have to check this with some other commits later.
But in the meantime; does anyone have a clue as to what’s the issue here? Could this be solely ufws fault or something?
Any help would be greatly appreciated.
Greetz derelektrischemoench