deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: daemon-deployment
spec:
  # slector must match the template to keep track of pods created by this deployment.
  selector:
    matchLabels:
      app: daemon
  replicas: 1
  template:
    metadata:
      labels:
        app: daemon
    spec:
      containers:
        # Single container from image repository, if private a pull secret would be required.
        - name: daemon
          image: repo/daemon:v1
          ports:
            - containerPort: 3000
          # readiness checks that the service is ready to accept connections this ideally would be changed to a HTTP request to a /health enpoint if this service is HTTP based.
          readinessProbe:
            tcpSocket:
              port: 3000
            initialDelaySeconds: 5
            periodSeconds: 10
          # Liveness checks the services is listening, if it fails this health check will restart the pod.
          livenessProbe:
            tcpSocket:
              port: 3000
            initialDelaySeconds: 5
            periodSeconds: 10