![]() terraform apply will prompt you for confirmation and then will create the infrastructure in only a few seconds. The command terraform init will initialize Terraform and download the provider. $ export HCLOUD_TOKEN= ""įor provisioning the infrastructure we do the following: $ terraform init If you take a look at the terraform provider documentation you will find the variable HCLOUD_TOKEN. There are several ways to do this but we will just export the token as an environment variable. Apply Terraform codeīefore we can run terraform to create the resources for us, we have to provide the API Token for Hetzner. This makes sure that the input cluster_nameis set and we are ready to go. Create a file called terraform.tfvars in the same directory and add the following line to it: cluster_name = "" Most of the inputs have defaults except the variable cluster_name. The README.md in the project directory gives us a brief explanation of inputs and outputs and gives us hints about load balancers. "kubeone_cluster_name" = var.cluster_name Change the rule allow SSH from any from: rule -bastion-host" Open the main.tf file with a text editor of your choice and find go to line 80. Of course we also have to make some adjustments on the Hetzner Firewall.įirst we change the firewall configuration. This allows us to restrict ssh connections only if they are tunnel through this specific host. To increase the level of security we will add another server resource and create a bastion server/jump host. This includes:Ĭurrently, there will be only servers created for Kubernetes. When we change the directory to examples/terraform/hetzner we find a ready to use terraform module, that provisions the basic infrastructure on our cloud provider. We clone the Kubermatic provided Terraform examples. We begin with provisioning our needed infrastructure with Terraform on Hetzner. It provides full lifecycle management of your clusters, including provisioning, upgrading and (when necessary) repairing them. KubeOne tries to solve this problem by providing a wrapper, which automates the operations of Kubernetes Clusters. But deploying Kubernetes with kubeadm is very cumbersome. kubeadm is the official tool to install Kubernetes on Virtual Machines or Bare Metal nodes. KubeOne is a small wrapper around kubeadm. In the first part of this blog series, we are focussing on deploying the basic infrastructure with Terraform. You have a basic understanding of Linux and Kubernetes You have installed KubeOne on your machine You have installed Terraform on your machine You already have set up a Hetzner account To begin with this little journey, I assume that: Provision a production-grade Kubernetes Cluster with Kubermatic KubeOne To make things a bit clearer about what you can expect from this series, I will give you a brief overview:Ĭreate Kubernetes infrastructure on Hetzner Cloud with Terraform Except that I will try to share some of my experiences and some (best) practices I learned while working with those two tools. ![]() "Oh no! Yet another blog post about setting a Kubernetes Cluster" - That's probably what most of you think when you read the headline.Īnd you are not wrong at all. ![]()
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