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From Docker with Ansible to k3s: I don't get it... (sh.itjust.works)

submitted 11 months ago by sunoc@sh.itjust.works to c/selfhosted@lemmy.world

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Hey! I have been using Ansible to deploy Dockers for a few services on my Raspberry Pi for a while now and it's working great, but I want to learn MOAR and I need help...

Recently, I've been considering migrating to bare metal K3S for a few reasons:

To learn and actually practice K8S.
To have redundancy and to try HA.
My RPi are all already running on MicroOS, so it kind of make sense to me to try other SUSE stuff (?)
Maybe eventually being able to manage my two separated servers locations with a neat k3s + Tailscale setup!

Here is my problem: I don't understand how things are supposed to be done. All the examples I find feel wrong. More specifically:

Am I really supposed to have a collection of small yaml files for everything, that I use with kubectl apply -f ?? It feels wrong and way too "by hand"! Is there a more scripted way to do it? Should I stay with everything in Ansible ??
I see little to no example on how to deploy the service containers I want (pihole, navidrome, etc.) to a cluster, unlike docker-compose examples that can be found everywhere. Am I looking for the wrong thing?
Even official doc seems broken. Am I really supposed to run many helm commands (some of them how just fails) and try and get ssl certs just to have Rancher and its dashboard ?!

I feel that having a K3S + Traefik + Longhorn + Rancher on MicroOS should be straightforward, but it's really not.

It's very much a noob question, but I really want to understand what I am doing wrong. I'm really looking for advice and especially configuration examples that I could try to copy, use and modify!

Thanks in advance,

Cheers!

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[–] testgoofy@infosec.pub 3 points 11 months ago (1 children)

I agree. k8s and helm have a steep learning curve. I have an engineering background and understand k8s in and out. Therefore, for my helm is the cleanest solution. I would recommend getting to know k8s and it's resources, before using (or creating) helm charts.

[–] atzanteol@sh.itjust.works 1 points 11 months ago

Yeah - I did come down a bit harder on helm charts than perhaps I intended - but starting out with them was a confusing mess for me. Especially since they all create a new 'custom-to-this-thing' config file for you to work with rather than 'standard yml you can google'. The layer of indirection was very confusing when I was learning. Once I abandoned them and realized how simple a basic deployment in k8s really is then I was able to actually make progress.

I've deployed half a dozen or so services now and I still don't think I'd bother with helm for any of it.