K3s on Ubuntu 24.04

1. Download a VDI disk image from https://www.osboxes.org/ubuntu-server/

2. Import in VirtualBox and run as a VM

3. Install basics:

   sudo apt update
   sudo apt upgrade
       sudo apt install openssh-server vim
   

4. Install k3s:

   curl -sfL https://get.k3s.io | sh -
   

5. Validate:

   systemctl status k3s
   kubectl get all -n kube-system
   

6. Install helm:

   curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
   chmod 700 get_helm.sh
   ./get_helm.sh
   

Example helm chart install

1. Set k3s config file:

   export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
   

2. Add helm repository:

   helm repo add airbyte https://airbytehq.github.io/helm-charts
   helm repo update
   helm search repo airbyte
   

3. Install

   helm install airbyte-test airbyte/airbyte

4. Pay attention to instructions:

   1. Get the application URL by running these commands:
   export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=webapp" -o jsonpath="{.items[0].metadata.name}")
   export CONTAINER_PORT=$(kubectl get pod --namespace default $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
   echo "Visit http://127.0.0.1:8080 to use your application"
   kubectl --namespace default port-forward $POD_NAME 8080:$CONTAINER_PORT