Ubuntu, but I'm very strongly considering switching out to Debian or Rocky. Ubuntu has a lot of really unnecessary cruft that I think I'd be better off without.

I use Fedora on my laptop now, so going the RHEL/Rocky/Alma route for my servers is really tempting. Especially as I'm also considering switching to Podman.

I'm currently on ubuntu and fedora. I'd love to try coreos

Fedora

Windows Hyper-V Server on the host with most of the VM's split between Ubuntu and Debian. I also have two Windows VM's that I keep out of necessity.

Proxmox on physical servers hosting a variety of vanilla Debian installations. I have a physical router running pfsense as well as two HP miniservers running OpenMediaVault.

I have 4 home servers. 1 running pfsense, 1 running truenas, 1 running proxmox, and 1 is a cloud key gen2 for unifi that I got for free

Gentoo always and for everything!

Gentoo!

One with Arch that runs gameservers for my friends, and another that runs Proxmox filled with either Arch or Debian in the containers depending on what it is in them.

Proxmox with latest Debian i guess, but all virtual machines are on Ubuntu 23.10. It's just the easiest to install things on, and have a semi-recent kernel, even though I would never use it on the desktop.

I actually wanted to run arch in the vms but I couldn't find any image with the latest arch. The latest I found was with kernel 6.3.

Fedora Server, with most of the services I need running via Docker.

My setup consists of the following:

Unraid, most services I self host run in docker here. Things like plex/jellyfin, nextcloud, unifi could controller.

Proxmox, used to virtualize my pfsense after I moved away from my unifi USG router. A few Linux and Debian headless virtual machines run here as well. Had pihole virtualized here as well but switched over to pfBlockerNG to consolidate.

TrueNAS, all my media shares. I also sync my desktop environments here to have a consistent windows desktop across my desktops and laptops.

Home assistant running on home assistant yellow. Runs a few add-on services.

A few actually.

Rocky Linux 9, XCP-NG, Windows server 2022 datacenter

Different usecasses.

Mythbuntu. It started its life as a MythTV server.

Gentoo because it can do it all

I have several servers I’ve acquired over the years setup in a proxmox cluster

Fedora Server

hypervisor: proxmox

vms: rhel 9.2

Ubuntu server w/ zfs on the main.

Have a little atom hp home server at my parents house that uses almost no power, that runs freebsd x86, zerotier one, and kopia. Free cloud backup 😁

Ubuntu and WinServer2019 vms split over a proxmox-machine and server2019-hyperv-machine

2 each for replication.

Arch which is great, but I want to move to FreeBSD or Proxmox for security reasons

• Alpine on Pi4.

• LMDE on recycled AMD systems (phenoms, opterons, FM2 APUs, oh and a recently dead bulldozer fx-8150).

• TrueNAS, OPNsense on dedicated hardware.

• VMware ESXi on my older workstations (currently transitioning toward LXD/Incus and ~~XPG-ng~~ XCP-ng with Xen Orchestra).

TrueNAS, and Debian

Proxmox, Openmediavault, Ubuntu Server. Mostly because I'm lazy and I grew up using Ubuntu.

Arch for stuff I have physical access to. Nothing's ever gone wrong, so it's worth it for the immediate updates and consistency with my other systems. For VPS I use Debian though, occasionally the unstable/Sid branch if I really need the latest updates. There are almost always Debian images available on a VPS.