apiVersion: v1
kind: Service
metadata:
  name: nats-headless
  labels:
    app: nats
spec:
  ports:
    - port: 6222
      name: cluster
  clusterIP: None  #
  selector:
    app: nats
---
apiVersion: v1
kind: Service
metadata:
  name: nats
  labels:
    app: nats
spec:
  ports:
    - port: 4222
      name: client
  selector:
    app: nats
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: nats
  labels:
    app: nats
spec:
  serviceName: "nats-headless"
  replicas: 3
  selector:
    matchLabels:
      app: nats
  template:
    metadata:
      labels:
        app: nats
    spec:
      containers:
        - name: nats
          image: nats:alpine
          # Start-Befehl für Clustering
          command:
            - "nats-server"
            - "--cluster"
            - "nats://0.0.0.0:6222"
            - "--routes"
            - "nats://nats-headless:6222" # Route zeigt auf den Headless Service
          ports:
            - containerPort: 4222
              name: client
            - containerPort: 6222
              name: cluster
          resources:
            requests:
              memory: "64Mi"
              cpu: "50m"
            limits:
              memory: "256Mi"
              cpu: "150m"