Multiple issues:

1. It would be apiVersion: v1 not apiVerion: v1 in the Service

2. wrong Spec.ports formation of Service. As nodePort, port, targetPort and protocol are under the ports as a list but your did wrong formation.

your service yaml should be like below:

apiVersion: v1
kind: Service
metadata:
  name: producer-app
  labels:
    name: producer-app
spec:
  ports:
    - nodePort: 30163
      port: 9090
      targetPort: 9090
      protocol: TCP
  selector:
    app: producer-app
  type: NodePort

So your overall yaml should be:

apiVersion: v1
kind: Service
metadata:
  name: producer-app
  labels:
    name: producer-app
spec:
  ports:
    - nodePort: 30163
      port: 9090
      targetPort: 9090
      protocol: TCP
  selector:
    app: producer-app
  type: NodePort

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: producer-app
spec:
  selector:
    matchLabels:
      app: producer-app
  replicas: 3
  template:
    metadata:
      labels:
        app: producer-app
    spec:
      containers:
        - name: producer
          image: producer:1.0
          ports:
            - containerPort: 9090
          env:
            - name: DB_HOST
              valueFrom:
                configMapKeyRef:
                  name: db-config
                  key: host
            - name: DB_NAME
              valueFrom:
                configMapKeyRef:
                  name: db-config
                  key: name
            - name: DB_USERNAME
              valueFrom:
                secretKeyRef:
                  name: db-user
                  key: username
            - name: DB_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: db-user
                  key: password

• Please change the first line in producer-deployment.yml. Letter s is missing.

From

apiVerion: v1

To

apiVersion: v1

There is a typo in the first line: "apiVerion" should be "apiVersion".