Dumb question, but what have you replaced it with? I’ve been working on setting up Proxmox/LXC on a box at home as we speak — but if it’s not worth the headache I’ll stick to VMs.
I'm not who you asked but I use them for different purposes. There are some quirks here and there. Never anything that won't run, but it could potentially add extra troubleshooting.
Things that got me recently, just off the top of my head:
- htop sees memory usage incorrectly
- Docker tries to use overlay2 on ZFS which fails (I think, I needed to create and mount an ext4 volume for reasons)
- Hashicorp Vault needed disable_mlock because I believe LXC blocks the syscall.
On the other hand, I like my Samba file server in a container though, because it is much easier to share storage from the host into LXC than a VM.
We've pretty much stopped using LXC containers in Proxmox because of all the little issues.