/terraform-k8s-hcloud

A simple project to spin your k8s cluster with terraform, kubeadm on hcloud

Primary LanguageHCLMIT LicenseMIT

Terraform Kubernetes on Hetzner Cloud

This repository will help to setup an opionated Kubernetes Cluster with kubeadm on Hetzner Cloud.

Usage

$ git clone https://github.com/solidnerd/terraform-k8s-hcloud.git
$ terraform init
$ terraform apply

Example

$ terraform init
$ terraform apply
$ KUBECONFIG=secrets/admin.conf kubectl get nodes
$ KUBECONFIG=secrets/admin.conf kubectl get pods --namespace=kube-system -o wide
$ KUBECONFIG=secrets/admin.conf helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
$ KUBECONFIG=secrets/admin.conf helm repo update
$ KUBECONFIG=secrets/admin.conf helm install -n kube-system tmp-ingress ingress-nginx/ingress-nginx -f demo-ingress.yml
$ KUBECONFIG=secrets/admin.conf kubectl apply -f demo-app.yml

Variables

Name Default Description Required
hcloud_token `` API Token that will be generated through your hetzner cloud project https://console.hetzner.cloud/projects Yes
master_count 1 Amount of masters that will be created No
master_image ubuntu-20.04 Predefined Image that will be used to spin up the machines (Currently supported: ubuntu-20.04, ubuntu-18.04) No
master_type cx11 Machine type for more types have a look at https://www.hetzner.de/cloud No
node_count 1 Amount of nodes that will be created No
node_image ubuntu-20.04 Predefined Image that will be used to spin up the machines (Currently supported: ubuntu-20.04, ubuntu-18.04) No
node_type cx11 Machine type for more types have a look at https://www.hetzner.de/cloud No
ssh_private_key ~/.ssh/id_ed25519 Private Key to access the machines No
ssh_public_key ~/.ssh/id_ed25519.pub Public Key to authorized the access for the machines No
docker_version 19.03 Docker CE version that will be installed No
kubernetes_version 1.18.6 Kubernetes version that will be installed No
feature_gates `` Add your own Feature Gates for Kubeadm No
calico_enabled false Installs Calico Network Provider after the master comes up No

All variables cloud be passed through environment variables or a tfvars file.

An example for a tfvars file would be the following terraform.tfvars

# terraform.tfvars
hcloud_token = "<yourgeneratedtoken>"
master_type = "cx21"
master_count = 1
node_type = "cx31"
node_count = 2
kubernetes_version = "1.18.6"
docker_version = "19.03"

Or passing directly via Arguments

$ terraform apply \
  -var hcloud_token="<yourgeneratedtoken>" \
  -var docker_version=19.03 \
  -var kubernetes_version=1.18.6 \
  -var master_type=cx21 \
  -var master_count=1 \
  -var node_type=cx31 \
  -var node_count=2

Contributing

Bug Reports & Feature Requests

Please use the issue tracker to report any bugs or file feature requests.

Tested with