apiVersion: v1
kind: Pod
metadata:
  name: json-logger
spec:
  containers:
    - name: logger
      image: busybox
      command: ["/bin/sh", "-c"]
      args:
        - |
          i=0;
          while true; do
            echo "{\"level\":\"info\", \"message\":\"hello from pod\", \"count\": $i}";
            i=$((i+1));
            sleep 1;
          done

apiVersion: apps/v1
kind: Deployment
metadata:
  name: json-logger-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      app: json-logger
  template:
    metadata:
      labels:
        app: json-logger
    spec:
      containers:
        - name: logger
          image: busybox
          command: ["/bin/sh", "-c"]
          args:
            - |
              i=0;
              while true; do
                echo "{\"timestamp\":\"$(date -Iseconds)\", \"level\":\"info\", \"message\":\"hello from deployment\", \"count\": $i}";
                i=$((i+1));
                sleep 1;
              done