Added k3s

.gitignore

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+
+# Created by https://www.gitignore.io/api/macos,vagrant,visualstudiocode
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Vagrant ###
+.vagrant/
+*.box
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history
+
+### Ansible ###
+*.retry
+
+# End of https://www.gitignore.io/api/macos,vagrant,visualstudiocode,ansible

README.md

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+[![Agile611](https://www.agile611.com/wp-content/uploads/2020/09/cropped-logo-header.png)](http://www.agile611.com/)
+# Start Using Kubernetes (k3s) with Vagrant
+
+Aquest repositori mostra com desplegar un clúster lleuger de Kubernetes (k3s) usant Vagrant per a desenvolupament i proves ràpides.
+
+**Prerequisits**
+
+- Vagrant instal·lat
+- Un provider de VM (VirtualBox, Parallels, o un provider suportat)
+- `curl` i `ssh` disponibles
+
+Consulteu el `Vagrantfile` per a configuracions específiques del provider.
+
+**Ràpid Inici**
+
+1. Arrancar les màquines amb Vagrant:
+
+```bash
+vagrant up
+```
+
+2. Comprovar l'estat del clúster (ssh a una màquina i utilitzar `kubectl` integrat):
+
+```bash
+vagrant ssh -c "sudo kubectl get nodes"
+```
+
+3. Parar i eliminar les màquines:
+
+```bash
+vagrant halt
+vagrant destroy -f
+```
+
+**Detalls d'instal·lació**
+
+Les instruccions d'instal·lació i els scripts utilitzats per configurar k3s estan a [install_k3s.txt](install_k3s.txt). Revisa aquest fitxer per entendre com s'instal·la i s'inicia k3s dins de les VM.
+
+**Personalitzar**
+
+Modifica el [Vagrantfile](Vagrantfile) per canviar la mida de la VM, la xarxa o el nombre de nodes.
+
+**Contribucions i errors**
+
+Obre un issue o envia un PR amb millores o problemes trobats.
+
+# Support
+
+This tutorial is released into the public domain by [Agile611](http://www.agile611.com/) under Creative Commons Attribution-NonCommercial 4.0 International.
+
+[![License: CC BY-NC 4.0](https://img.shields.io/badge/License-CC_BY--NC_4.0-lightgrey.svg)](https://creativecommons.org/licenses/by-nc/4.0/)
+
+
+This README file was originally written by [Guillem Hernández Sola](https://www.linkedin.com/in/guillemhs/) and is likewise released into the public domain.
+
+Please contact Agile611 for further details.
+
+* [Agile611](http://www.agile611.com/)
+* Laureà Miró 309
+* 08950 Esplugues de Llobregat (Barcelona)
+
+[![Agile611](https://www.agile611.com/wp-content/uploads/2020/09/cropped-logo-header.png)](http://www.agile611.com/)
+

Vagrantfile

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+NUM_WORKER_NODES=2
+IP_NW="192.0.3."
+IP_START=10
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "bento/ubuntu-24.04"
+  config.vm.box_check_update = true
+
+  config.vm.define "master" do |master|
+    master.vm.hostname = "master-node"
+    master.vm.network "private_network", ip: IP_NW + "#{IP_START}"
+    master.vm.provider "virtualbox" do |vb|
+        vb.memory = 4048
+        vb.cpus = 2
+    end
+    master.vm.provision "shell", path: "install_k3s.sh"
+    master.vm.network :forwarded_port, guest: 8001, host: 8001
+    master.vm.network :forwarded_port, guest: 6443, host: 6443
+    for i in 30000..32767
+      master.vm.network :forwarded_port, guest: i, host: i
+    end
+  end
+
+  (1..NUM_WORKER_NODES).each do |i|
+
+  config.vm.define "node0#{i}" do |node|
+    node.vm.hostname = "worker-node0#{i}"
+    node.vm.network "private_network", ip: IP_NW + "#{IP_START + i}"
+    node.vm.provider "virtualbox" do |vb|
+        vb.memory = 2048
+        vb.cpus = 1
+    end
+  end
+
+  end
+end 
+
+# Configuració Global
+NUM_WORKER_NODES = 2
+IP_NW = "192.0.3."
+IP_MASTER = "192.0.3.10" # Fixem la IP del Master per referenciar-la als workers
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "bento/ubuntu-24.04"
+  config.vm.box_check_update = false
+
+  # --- Configuració del MASTER ---
+  config.vm.define "master" do |master|
+    master.vm.hostname = "master-node"
+    master.vm.network "private_network", ip: IP_MASTER
+    
+    master.vm.provider "virtualbox" do |vb|
+        vb.memory = 2048 # Amb 2GB n'hi ha prou per K3s bàsic
+        vb.cpus = 2
+    end
+
+    # Ports importants (API i Ingress HTTP/HTTPS)
+    master.vm.network :forwarded_port, guest: 6443, host: 6443, id: "k8s-api"
+    master.vm.network :forwarded_port, guest: 80, host: 8080, id: "ingress-http" # Accedeix a les apps via localhost:8080
+
+    master.vm.provision "shell", path: "k3s_master.sh"
+  end
+
+  # --- Configuració dels WORKERS ---
+  (1..NUM_WORKER_NODES).each do |i|
+    config.vm.define "node0#{i}" do |node|
+      node.vm.hostname = "worker-node0#{i}"
+      node.vm.network "private_network", ip: IP_NW + "#{10 + i}"
+      
+      node.vm.provider "virtualbox" do |vb|
+          vb.memory = 1024 # 1GB per worker
+          vb.cpus = 1
+      end
+
+      node.vm.provision "shell", path: "k3s_worker.sh"
+    end
+  end
+end

k3s_master.sh

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+  echo "🚀 Instal·lant K3s Server (Master)..."
+  curl -sfL https://get.k3s.io | sh -s - --node-ip #{IP_MASTER} --flannel-iface eth1
+
+  echo "🔑 Guardant el Token a la carpeta compartida..."
+  # Copiem el token a /vagrant (que és la carpeta del teu PC) perquè els workers el vegin
+  sudo cp /var/lib/rancher/k3s/server/node-token /vagrant/node-token
+  sudo chmod 644 /vagrant/node-token
+  
+  echo "✅ Master llest!"

k3s_worker.sh

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+  echo "⏳ Esperant que el Master generi el token..."
+  while [ ! -f /vagrant/node-token ]; do sleep 2; done
+  
+  K3S_TOKEN=$(cat /vagrant/node-token)
+  NODE_IP=$(ip addr show eth1 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1)
+
+  echo "🚀 Instal·lant K3s Agent (Worker) connectant a #{IP_MASTER}..."
+  curl -sfL https://get.k3s.io | K3S_URL=https://#{IP_MASTER}:6443 K3S_TOKEN=$K3S_TOKEN sh -s - --node-ip $NODE_IP --flannel-iface eth1
+  
+  echo "✅ Worker unit al clúster!"