Install K3s Kubernetes

Install K3s lightweight Kubernetes on your VPS

K3s is a lightweight Kubernetes distribution designed for resource-constrained environments, making it ideal for running Kubernetes on a VPS.

Prerequisites

• A VPS with OnetSolutions
• SSH access to your server
• Root or sudo privileges

Installation Steps

1. Connect to your VPS

   Connect via SSH to your server.

2. Install K3s

   Run the K3s installation script:

   curl -sfL https://get.k3s.io | sh -
   
3. Wait for installation

   The installation may take a few minutes. K3s will automatically start after installation.

4. Configure kubectl

   Copy the K3s configuration for kubectl:

   mkdir -p ~/.kube
   sudo cp /etc/rancher/k3s/k3s.yaml ~/.kube/config
   sudo chown $USER:$USER ~/.kube/config
   
5. Verify installation

   Check that K3s is running:

   kubectl get nodes
   

   You should see your VPS listed as a node.

Deploying Applications

1. Create a manifest file

   Create a Kubernetes manifest file (e.g., my-app.yaml) describing your application.

2. Deploy the application

   kubectl apply -f my-app.yaml
   
3. Check deployment status

   kubectl get pods
   kubectl get services
   

Managing K3s

Stop K3s

sudo systemctl stop k3s

Start K3s

sudo systemctl start k3s

Uninstall K3s

/usr/local/bin/k3s-uninstall.sh

For more information, refer to the official K3s documentation.