Managing Pod configuration using ConfigMaps and Secrets in Kubernetes (resource for the story on Medium)

webapp-deployment.yaml

apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: webapp
spec:
  ...
        env:
        - name: POSTGRES_HOST
          value: postgres
        - name: POSTGRES_PORT
          value: "5432"
        - name: POSTGRES_DATABASE
          value: url_shortener_db
        - name: POSTGRES_USER
          value: user
        - name: POSTGRES_PASSWORD
          value: mysecretpassword