For running an echo server for regular and web socket on kubernetes

README.md

Echo Server

A very simple HTTP echo server with support for web-sockets.

Any messages sent from a web-socket client are echoed.
Visit /.ws for a basic UI to connect and send web-socket messages.
Requests to any other URL will return the request headers and body.
The PORT environment variable sets the server port.
Set the LOG_HTTP_BODY environment variable to dump request bodies to STDOUT.
No TLS support yet :(

Ref: https://github.com/jmalloc/echo-server/blob/master/README.md

ws-echo-server.yaml

# Deployment to run 1 pod container of echo-server
apiVersion: apps/v1
kind: Deployment
metadata:
  name: echo-server
  labels:
    app: echo-server
spec:
  replicas: 1
  selector:
    matchLabels:
      app: echo-server
  template:
    metadata:
      labels:
        app: echo-server
    spec:
      containers:
      - name: echo-server
        image: jmalloc/echo-server
        ports:
        - containerPort: 8080

# Creating Kubernetes Service to expose 8080 to 80
---
apiVersion: v1
kind: Service
metadata:
  name: echo-server
spec:
  selector:
    app: echo-server
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080

# Creating Ingress to map service at port 80 to an external sub domain
# Change something.com to the domain you own
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: echo-server
  annotations:
    kubernetes.io/ingress.class: nginx
spec:
  rules:
    - host: echo-server.something.com
      http:
        paths:
          - path: /
            backend:
              serviceName: echo-server
              servicePort: 80