---
layout: post
title: I don't get Kubernetes
date: 2025-04-06 15:59 +0200
categories: tech
lang: en
---

No real content, just me ranting.

There are [some ;)](https://xeiaso.net/talks/2025/surreal-joy-homelab/) who take
great joy in Kubernetes. I never really understood how I could use it.

Okay, so, very simplified, K8s let's you say "I wanna run these services (Docker
containers) on my cluster (various computers/servers), optionally with
redundancy"? Well, I only have one "server" in my "homelab", and then 3 VPS or
so. Only one of them runs something in Docker/Podman.

I *can't imagine*/don't understand how I would run, say, Nextcloud in K8s. I
*want* to know which server is currently running it, and where the data is
stored.  Especially with something like Nextcloud, I want to have the Nextcloud
application, the database, and the data store on **one** VPS, without any
indirections, without any communication over the internet or a VPN, via some
proxy software. From what little I've heard about K8s (forgive me my ignorance),
I had more questions that I could answer. K8s seems really complex, because it
~~has~~ can have so many moving parts (yes, you can probably run a very basic
setup, most of the components seem optional). I don't want my database suddenly
moved around to somewhere else.

That is to say: I never had a use case of trying out K8s. No *actual, real* one.
I could probably construct one if I tried really hard. But, eh. "My current
setup works".

My attempt to run K8s on my Proxmox via LXC all failed, even if they're
privileged containers, probably because I need to mount Linux Namespaces, or
load specific kernel modules on Proxmox itself so they can be loaded in the LXC
containers as well (???).