Minecraft Operator
A Kubernetes operator for dedicated servers of the
video game Minecraft Java Edition.
This allows you to administer and configure a Minecraft server solely using the Kubernetes API — no remote shell, SFTP,
or graphical admin interfaces are required.
Note that this is 🚧 alpha-grade 🚧 software. No guarantee is provided (see the license), and users are
responsible for the security and data-integrity of their own servers. The API surface is subject to change. This
software is not endorsed or supported by Microsoft, Mojang, or the Minecraft development team.
All the heavy-lifting is done by the excellent itzg/docker-minecraft-server.
That container image is what is actually deployed into the cluster as a Pod
. This project isn't endorsed or
supported by itzg either.
Installing
You can install the latest version of the operator by running this command with your cluster configured in kubectl
.
curl -L https://github.com/JamesLaverack/minecraft-operator/releases/latest/download/operator.yaml | kubectl apply -f -
The command above will install the operator at a specific release. You can also change the image tag to either latest
to always get the latest published release or edge
to get the latest build of the main branch. However, doing so won't
get you YAML updates (e.g., adding new permissions or custom resource definition updates). (Also the edge
tag
publishes before tests are run, so it comes with even fewer guarantees than normal.)
Verify
You can verify everything is working by looking for the operator Pod in the minecraft-operator-system
namespace, e.g.:
kubectl --namespace minecraft-operator-system get pod
If this gives you a running Pod, then it's likely all good.
Usage
Once the operator is installed, you can create a Minecraft server by creating a MinecraftServer
object in Kubernetes.
This will create and manage resources such as a Pod and a Service. Resources are created in whatever namespace the
MinecraftServer
object is in.
Note that the API uses "allowList" in place of "whitelist", but it is applied to the server in the same way.
Example Server
apiVersion: minecraft.jameslaverack.com/v1alpha1
kind: MinecraftServer
metadata:
name: my-minecraft-server
spec:
eula: Accepted
minecraftVersion: 1.18.1
type: Paper
opsList:
- name: Player1
uuid: da6a1ae6-e2f5-4e32-9135-b82a9ef426a9
allowList:
- name: Player2
uuid: 880182d6-a0e3-44cd-a57c-8dc3799e92b8
world:
persistentVolumeClaim:
claimName: minecraft-world
motd: "My Minecraft Server"
maxPlayers: 8
viewDistance: 16
externalServiceIP: 192.168.1.51
vanillaTweaks:
survival:
- 'multiplayer sleep'
- 'afk display'
items:
- 'player head drops'
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: minecraft-world
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi