Kubernetes: a simple Nginx "Hello world" deployment file

nginx-hello-world-deployment.yaml

# To deploy: kubectl create -f nginx-hello-world-deployment.yaml
# Access it with the API as a proxy:
# $ kubectl proxy
# Then in you browser: http://localhost:8001/api/v1/namespaces/default/services/nginx:/proxy/#!/

apiVersion: v1
kind: Service
metadata:
  name: nginx
spec:
  type: NodePort
  ports:
  - port: 80
    targetPort: 80
    nodePort: 30001
  selector:
    app: nginx
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  nginx.conf: '
events {
}
http {
   server {
       listen 80;
       location / {
           return 200 "Hello world!";
       }
   }
}
'
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  selector:
    matchLabels:
      app: nginx
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - image: nginx:latest
        name: nginx
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
          - name: config-vol
            mountPath: /etc/nginx/
      volumes:
        - name: config-vol
          configMap:
            name: nginx-config
            items:
              - key: nginx.conf
                path: nginx.conf