# NATS — JetStream-enabled message broker
# JetStream enabled with persistent storage via local-path PVC
# Unpinned — scheduler places freely
# NodePorts: 32376 (client), 32377 (websocket), 32378 (monitoring)
#
# Deploy:
#   kubectl apply -f nats.yaml -n <ns>
#
# Internal cluster DNS: nats:4222
# WebSocket: nats:8080
# Monitoring: nats:8222

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nats-config
data:
  nats.conf: |
    jetstream {
      store_dir: /data
    }

    http_port: 8222

    websocket {
      port: 8080
      no_tls: true
    }

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nats-pvc
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: local-path
  resources:
    requests:
      storage: 10Gi

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nats
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nats
  template:
    metadata:
      labels:
        app: nats
    spec:
      containers:
        - name: nats
          image: nats:latest
          command: ["-c", "/etc/nats/nats.conf"]
          ports:
            - containerPort: 4222
            - containerPort: 8080
            - containerPort: 8222
          volumeMounts:
            - name: nats-config
              mountPath: /etc/nats
            - name: nats-data
              mountPath: /data
      volumes:
        - name: nats-config
          configMap:
            name: nats-config
        - name: nats-data
          persistentVolumeClaim:
            claimName: nats-pvc

---
apiVersion: v1
kind: Service
metadata:
  name: nats
spec:
  selector:
    app: nats
  ports:
    - name: client
      port: 4222
      targetPort: 4222
      nodePort: 32376
    - name: websocket
      port: 8080
      targetPort: 8080
      nodePort: 32377
    - name: monitoring
      port: 8222
      targetPort: 8222
      nodePort: 32378
  type: NodePort