# 174-webserver-deployment.yaml
apiVersion: apps/v1      # Kubernetes API version
kind: Deployment         # Type of resource
metadata:                # Resource metadata
  name: mywebserver      # Resource name
  labels:                # Labels for the resource
    app: httpd           # Label "app=httpd"
spec:                    # Resource specifications
  replicas: 2            # Number of replicas
  selectors:             # Pod selectors
    matchLabels:         # Selects Pods with matching labels
      app: httpd         # Selects Pods labeled "app=httpd"
  template:              # Pod template
    metadata:            # Pod metadata
      labels:            # Labels for the Pod
        app: httpd       # Label "app=httpd"
    spec:                # Pod specifications
      containers:        # Containers to create in the Pod
        - name: myhttpd   # Container name
          image: httpd    # Docker image
          ports:          # Container ports
            - containersPort: 80 # Port number (HTTP traffic)