k3s VS k3sup

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.

# Maintainer: Talha Altinel pkgname=k3sup pkgver=0.13.0 pkgrel=1 pkgdesc='A tool to bootstrap K3s over SSH in < 60s' arch=('x86_64') url='https://github.com/alexellis/k3sup' license=('MIT') depends=('glibc' 'openssh') makedepends=('git' 'go>=1.20') source=("${pkgname}-${pkgver}.tar.gz::https://github.com/alexellis/k3sup/archive/${pkgver}.tar.gz") sha256sums=('24939844ac6de581eb05ef6425c89c32b2d0e22800f1344c19b2164eec846c92') _commit=('1d2e443ea56a355cc6bd0a14a8f8a2661a72f2e8') build() { cd "$pkgname-$pkgver" export CGO_CPPFLAGS="${CPPFLAGS}" export CGO_CFLAGS="${CFLAGS}" export CGO_CXXFLAGS="${CXXFLAGS}" export CGO_LDFLAGS="${LDFLAGS}" export GOFLAGS="-buildmode=pie -trimpath -mod=readonly -modcacherw" go build \ -ldflags "-s -w -X github.com/alexellis/k3sup/cmd.Version=$pkgver -X github.com/alexellis/k3sup/cmd.GitCommit=$_commit" \ -o k3sup \ . for shell in bash fish zsh; do ./k3sup completion "$shell" > "$shell-completion" done } package() { cd "$pkgname-$pkgver" install -Dm755 -t "$pkgdir/usr/bin" k3sup mkdir -p "${pkgdir}/usr/share/bash-completion/completions/" mkdir -p "${pkgdir}/usr/share/zsh/site-functions/" mkdir -p "${pkgdir}/usr/share/fish/vendor_completions.d/" install -Dm644 bash-completion "$pkgdir/usr/share/bash-completion/completions/k3sup" install -Dm644 fish-completion "$pkgdir/usr/share/fish/vendor_completions.d/k3sup.fish" install -Dm644 zsh-completion "$pkgdir/usr/share/zsh/site-functions/_k3sup" install -Dm644 -t "$pkgdir/usr/share/licenses/$pkgname" LICENSE }

I recommend learning docker first, then pick a vps host from vpsbenchmarks, then use k3sup to deploy a kubernetes cluster on that, then follow a getting-started kubernetes tutorial from there. You'll also want to buy a domain name with tld-list and then provision a TLS certificate with cert-manager and letsencrypt (skip steps 1-4 because Google Cloud is overpriced).

I just installed k3s yesterday using k3sup on 6 VMs (3 masters, 3 workers) each with 2GB RAM ( limited by the actual RAM on hardware, for now ) with Ubuntu 22.04 as the base OS.

k3s installed with k3sup, longhorn for storage, kube-vip for API VIP, and MetalLB for service load balancer using local subnet, and of course Rancher.

My applause to Alex Ellis for writing a clear, direct call to arms!

Their work is super useful and interesting. I've added them to my list of sponsorships: https://github.com/sponsors/alexellis

Yeah, this is the answer, but I would use this with K3S: https://github.com/alexellis/k3sup

$ curl -sLS https://get.k3sup.dev | sh x86_64 Downloading package https://github.com/alexellis/k3sup/releases/download/0.12.12/k3sup as /home/ec2-user/k3sup Download complete. ============================================================ The script was run as a user who is unable to write to /usr/local/bin. To complete the installation the following commands may need to be run manually. ============================================================ sudo cp k3sup /usr/local/bin/k3sup ================================================================ alexellis's work on k3sup needs your support https://github.com/sponsors/alexellis ================================================================ No nos devolverá nada, pero podremos correr lo siguiente para saber si k3sup efectivamente se instalo: