This gist consists of examples for Kubernetes Labels, Selectors and Annotations

k8s-labels-selectors-annotations.yml

---
# Labels with prefix 
apiVerion: apps/v1
kind: Deployment
metadata:
  labels: 
    app.kubernetes.io/name: redpod
    app.kubernetes.io/version: 1.24

# Labels without prefix
apiVersion: v1
kind: Pod
metadata:
  name: nginx
  labels:
    environment: prod
    app: nginx
spec:
  containers:
  - name: nginx
    image: nginx:1.14.2
    ports:
    - containerPort: 80
      
# Kubernetes Service Kind with Selectors
apiVersion: v1
kind: Service
metadata:
  name: my-nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    protocol: TCP
  selector:
    environment: prod
    app: nginx
		    
# Annotation Example
apiVersion: v1
kind: Pod
metadata:
  name: annotations-demo
  annotations:
    imageregistry: "https://hub.docker.com/"
spec:
  containers:
  - name: nginx
    image: nginx:1.14.2
    ports:
    - containerPort: 80