This demonstrates how to run Minecraft in Kubernetes. It builds on the work of the itzg Minecraft Server Docker Image to create a docker container in kubernetes

This repository demonstrates how to run in a local kubernetes cluster using local disks.

• Have a Kubernetes cluster, be able to SSH to the nodes in your cluster
• Have your kubeconfig command line set up to talk to your cluster
• Have cluster admin privileges on this cluster
• Clone this repository to your computer

SSH to one of the nodes in your kubernetes cluster. Create a directory where you want Minecraft files to exist.

ssh your_kubernetes_host
sudo mkdir -p "/mnt/local-volumes/minecraft"
sudo chmod 777 "/mnt/local-volumes/minecraft"

Get the kubernetes node name name of the host machine on which you just added the directory.

Edit 20-volume-local.yaml. Update Line 17 to include the host path. Update line 25 to include the kubernetes node name

The itzg Minecraft Server Docker Image allows you to configure settings in the minecraft server by setting environment variables.

You can edit 30-deployment-local.yaml to add or change environment variables for your purposes. See lines 30-35 for examples. See the minecraft-server docker image page for documentation on configuring your server.

Now, apply the configuration to Kubernetes

kubectl apply -f 00-namespace.yaml
kubectl apply -f 10-volume-claim-local.yaml
kubectl apply -f 20-volume-local.yaml
kubectl apply -f 30-deployment-local.yaml
kubectl apply -f 40-service-nodeport.yaml

We have created a node-port service, which means that you can connect to any node in your kubernetes cluster on port 30565 (declared in 40-service-nodeport.yaml) to attach to this minecraft server. Suppose that your kubernetes node has a public ip address of 192.168.1.203. When you configure your minecraft server, connect to 192.168.1.203:30565

Running on GKE: If anyone is interested in figuring this out the details to make this work on Google Cloud GKE or Azure AKS, please send me a PR.

Helm Chart: If anyone wants to turn this into a Helm chart, that would be pretty cool.