reverse-proxy-1

# Assuming Docker Desktop Kubernetes, the following command fetches
# a joke from api.chucknorris.io via an nginx reverse proxy:
# curl -k -v -H "Host: chucknorris.local" https://kubernetes.docker.internal/jokes/random
---
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: chucknorris
spec:
  selfSigned: {}
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: server-conf
data:
  server.conf: |
    server {
      listen 0.0.0.0:8080;
      server_name _;
      root /app;
      location / {
        proxy_pass https://api.chucknorris.io;
        proxy_set_header Host api.chucknorris.io;
        proxy_ssl_name api.chucknorris.io;
        proxy_ssl_server_name on;
      }
    }
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: nginx
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      volumes:
      - name: server-conf
        configMap:
          name: server-conf
      containers:
      - image: bitnami/nginx
        name: nginx
        ports:
        - containerPort: 8080
        volumeMounts:
        - name: server-conf
          mountPath: /opt/bitnami/nginx/conf/server_blocks
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    cert-manager.io/cluster-issuer: "chucknorris"
  name: chucknorris
spec:
  ingressClassName: nginx
  tls:
  - hosts:
    - chucknorris.local
    secretName: chucknorris-local
  rules:
  - host: chucknorris.local
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: nginx
            port:
              number: 8080