apiVersion: apps/v1
kind: Deployment
metadata:
  name: tcp-echo
  namespace: tcp-echo
spec:
  replicas: 1
  selector:
    matchLabels:
      app: tcp-echo
  template:
    metadata:
      labels:
        app: tcp-echo
    spec:
      containers:
      - name: tcp-echo
        image: busybox
        command: ["/bin/sh", "-c", "while true; do nc -lk -p 9000 -e /bin/cat; done"]
        ports:
        - containerPort: 9000