apiVersion: v1
kind: Service
metadata:
  name: numbers-api-proxy
  namespace: kiamol-ch13-test
spec:
  ports:
    - port: 8080
      targetPort: http
  selector:
    app: numbers-api-proxy
  type: LoadBalancer
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: numbers-api-proxy-config
  namespace: kiamol-ch13-test
data:
  nginx.conf: |-
    user  nginx;
    worker_processes  1;

    error_log  /var/log/nginx/error.log warn;
    pid        /var/run/nginx.pid;

    events {
      worker_connections  1024;
    }

    http {
      proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=STATIC:1m inactive=24h  max_size=1g;

      server {
        listen 80 default_server;
        listen [::]:80 default_server;

        location / {
            proxy_pass             http://numbers-api;
            proxy_set_header       Host $host;
            proxy_cache            STATIC;
            proxy_cache_valid      20s;
            add_header             X-Cache     $upstream_cache_status;
            add_header             X-Host      $hostname;         
        }
      }
    }
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: numbers-api-proxy
  namespace: kiamol-ch13-test
spec:
  selector:
    matchLabels:
      app: numbers-api-proxy
  template:
    metadata:
      labels:
        app: numbers-api-proxy
    spec:
      containers:
        - image: nginx:1.17-alpine
          name: nginx
          ports:
            - containerPort: 80
              name: http
          volumeMounts:
            - name: config
              mountPath: "/etc/nginx/"
              readOnly: true
            - name: cache-volume
              mountPath: /data/nginx/cache
      volumes:
        - name: config
          configMap:
            name: numbers-api-proxy-config
        - name: cache-volume
          emptyDir: {}