This YAML file is designed to be a quickstart for deploying an Nginx web server in a Kubernetes cluster.

k8s-nginx-quickstart.yaml

# Define a new Namespace for our test environment
apiVersion: v1
kind: Namespace
metadata:
  name: quickstart-test

---
# Deployment definition starts here
apiVersion: apps/v1
kind: Deployment
metadata:
  # Name of the Deployment
  name: nginx-deployment
  # Namespace in which this Deployment will be created
  namespace: quickstart-test
spec:
  # Number of pod replicas
  replicas: 2
  # Label selector for managing the pods
  selector:
    matchLabels:
      app: nginx
  # Template for the pods
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        # Docker image to use for the container
        image: nginx:latest
        # Ports exposed by the container
        ports:
        - containerPort: 80

---
# Service definition starts here
apiVersion: v1
kind: Service
metadata:
  # Name of the Service
  name: nginx-service
  # Namespace in which this Service will be created
  namespace: quickstart-test
spec:
  # Type of Service - NodePort makes it accessible externally
  type: NodePort
  # Selector to link the Service to the Deployment
  selector:
    app: nginx
  # Port configuration
  ports:
    - protocol: TCP
      # Port to be exposed on the pod
      port: 80
      # Port to be exposed on the node
      nodePort: 30007