hetzner-k8s-setup

Notes how to setup kubernetes cluster in Hetzner cloud

Versions

• kubernetes: 1.27.2
• OS: Rocky linux 9
• Docker: 24.0.2

Features

• Container runtime: Docker
• Network: Flannel
• Cloud controller manager
  • Private network management
  • Nodes interfaces settings
  • Load balancers
• Autoscaler
• Storage driver

Preparing

For this step you can use web cloud console or hcloud cli app

• (Optional) Create firewall with no-limit outbound, allow inbound TCP 22 and ICMP
• (Optional) Create placement group
• (Optional) Upload your ssh key
• Create private network 10.0.0.0/16
• Create access token with read and write permissions
• Create master node (Ex. CX21) with attached firewall, network, placement group and ssh key

Installation

• Follow cloud-init-all.sh in master node
• Make master node snapshot for worker nodes
• Follow cloud-init-master.sh
• Add base64 encoded join command to autoscaler (ex. in cloud-init-worker.sh)
• Test your setup with echoserver deployment
• (Optional) Install addons