k3s-ansible VS k3s

I deployed k3s to a test node using Techno Tim's k3s-ansible playbook.

Remind myself about how Ansible works (I've forked this: https://github.com/techno-tim/k3s-ansible/tree/master and added a role to automatically set up my Hetzner server and install Core OS, as well as staring the cluster with Flannel Wireguard Native, and a few other minor changes).

I think this one is updated https://docs.technotim.live/posts/k3s-etcd-ansible/

I recently broke my cluster somehow (see this thread) so I decided to start fresh because I can't get K3s up and running again. I now have 5 nodes (3 master, 2 worker) with etcd configured using the K3s-ansible guide found here. Is it possible to recover the PVs from my failed cluster? I still have SSH access to each of the machines that participated in the cluster. It would save me a lot of rebuilding time if I could extract them (even from an older backup, if Longhorn stores them in an accessible format) and apply to the new cluster.

Like u/darkstar_01 mentioned, I'd start with k3s since it has a lot of these things built in and is really lightweight. To further that suggestion I'd recommend using u/Techno-Tim k3s-ansible playbook, it's dark magic. https://github.com/techno-tim/k3s-ansible

To be honest, I'd just switch to Kubernetes for something like this. Technotim has some pretty easy to digest guides on how to get a basic cluster set up

take a look at this https://github.com/techno-tim/k3s-ansible https://www.youtube.com/watch?v=CbkEWcUZ7zM&ab\_channel=TechnoTim

I'm having a hard time understanding how to setup the network/cluster for HA. I've basically been following along with this guide: https://docs.technotim.live/posts/k3s-etcd-ansible/ which uses MetalLB + kube-vip. I have the cluster running and have the MetalLB IP range set for a block of internal LAN IPs / Layer 2 (unsure if this is correct for what I'm looking to do). All of this seems to be working internally. My confusion is how to get WAN traffic in.

I’m Nomsplease on GitHub, and I’m currently running the latest Proxmox 7.x with the opt-in kernel 6.X. https://github.com/techno-tim/k3s-ansible

Proxmox is host to a bunch of VMs, including a K3S cluster that is setup though an Ansible playbook. There are 3 Masters and 4 workers. I followed TechnoTim’s guide here to get this cracking and honestly, I’ve only scratched the surface on Kubernetes. I setup a bash alias on the first IP in the K3S stack to run the Ansible playbook with one simple command, so its simple to spin up again, should I shutoff this server. I then setup Rancher to maintain and utilize the Kubernetes Cluster, with a Traefik2 ingress, MetalLB, Helm, and Longhorn for distributed storage. Links here for tutorials by TechnoTim – Longhorn, Traefik-K3S-ingress with Cert-manager, and Rancher setup. The Proxmox server is also home to two separate PBX solutions, they’re installed and they have access to my SIP trunk provider (voip.ms, here’s my referral link if anyone’s interested.) I’ve added 15 bucks to the account and have it as a work line should I ever get my Technical Consulting business off the ground. Right now the PBXs can be spun up but the IP phones are sitting in a closet. It’s a cool project to get going though even if I don’t need a landline, let alone a full PBX. From there I have a bunch of small Ubuntu VMs that I have a created though template’s with cloud-init drives to make it a sinch to spin up another VM (Cloud-init tutorial) I just started to get into Terraform (IoC – infrastructure as code) to spin up VMs in much the same way you would with Ansible (project here thru The Digital Life, yt channel). LibreNMS is another thing that I just spun up the other day. No real tutorial to link because SNMP is dead simple. I’m sure I could dockerize some of these projects, rather than spinning up a whole new Ubuntu VM, but sometimes its nice to just have a clean start and then combine Compose files into stacks though I’m sure some of the VMs can be setup to run more than one service per VM.

Opinionated meaning it picks, install, patches your CNI/Ingress/Load Balancer/DNS Server/Metrics Server/Monitoring Setup.

k3s is probably most well known as it ships with bunch of preinstall software: https://github.com/k3s-io/k3s so you can just start throwing yaml files at cluster and handling workloads. It's what I use for my homelab.

Paid things I've heard of include OpenStack and SideroLabs. Haven't used personally by SRE coworkers say good things about them.

For self-hosting I've found https://k3s.io to be really good from the SUSE people. Works on basically any Linux distro and makes self-hosting k8s not miserable.

Yes it’s going to depend on which k8s distribution you’re using. We have work in-progress for k3s to natively support nix-snapshotter: https://github.com/k3s-io/k3s/pull/9319

For other distributions, nix-snapshotter works with official containerd releases so it’s just a matter of toml configuration and a systemd unit for nix-snapshotter.

We run Kubernetes outside of NixOS, but yes the NixOS modules provided by the nix-snapshotter certainly make it simple.

K3S: is a lightweight distribution of Kubernetes that is designed for resource-constrained environments. It is an excellent option for running Kubernetes on a virtual machine or cloud server.

I recently purchased a used Lenovo M900 Think Centre (i7 with 32GB RAM) from eBay to expand my mini-homelab, which was just a single Synology DS218+ plugged into my ISP's router (yuck!). Since I've been spending a big chunk of time at work playing around with Kubernetes, I figured that I'd put my skills to the test and run a k3s node on the new server. While I was familiar with k3s before starting this project, I'd never actually run it before, opting for tools like kind (and minikube before that) to run small test clusters for my local development work.

Kubernetes - k3s distribution

I’ve created a local cluster with K3S and installing Windmill could not be simpler with just one chart to configure, which already has sane defaults to get started. For this demo we will also configure workers to passthrough environment variables to our scripts so that they have access to the Kubernetes API server for later.

You should be familiar with Kubernetes and have set up a Kubernetes cluster. I recommend k3s.