K3S on Hetzner Cloud

This repository contains a Terraform template to spin up a k3s cluster on Rancher. It also provides a Helm-Chart which contains two Subcharts for installing the hcloud-cloud-controller-manager and the hcloud-csi-driver. Thanks to Matthias Lohr for providing the Helm Charts.

Usage

Cluster Provisioning

1. Copy the terraform.tfvars.example to terraform.tfvars and hand in the information
2. Take a look at the variables.tf to check if you want to add more config
3. Run terraform init and terraform plan. Check if everything seems ok
4. Run terraform apply and let Terraform do the deployment
5. Get your kubeconfig by running chmod +x ./cp-kubeconf.sh followed by ./cp-kubeconf.sh <IP Adress of your Management Node>

Add Hetzner Cloud Integrations

The attached Helm Chart can install all necessary components to provide a tight integration with Hetzner Cloud.

1. Initialize the submodules by running git submodule update --init --recursive
2. Install the Helm-Chart, using e.g. helm --kubeconfig ./kube_config.yaml upgrade --namespace kube-system --install -f ./controller-values.yaml setup ./controller
   • If you choose another command for helm installation, please name your Helm deployment setup or change the variable hcloud-csi-driver.csiDriver.secret.name
3. Check if all components get up