andrewhamon · June 12, 2016 05:07
diff --git a/Caddyfile b/Caddyfile
 localhost:80

 proxy / server_1:8080 server_2:8080 server_3:8080 {
  policy round_robin
  health_check /healthcheck 1s
 }
diff --git a/docker-compose.yml b/docker-compose.yml
 version: '2'
 services:
  server_1:
    build: .
    environment:
      - SERVER_NAME=server_1

  server_2:
    build: .
    environment:
      - SERVER_NAME=server_2

  server_3:
    build: .
    environment:
      - SERVER_NAME=server_3

  caddy:
    image: abiosoft/caddy
    ports:
      - "80:80"
    volumes:
      - ./Caddyfile:/etc/Caddyfile
    depends_on:
      - server_1
      - server_2
      - server_3
diff --git a/Dockerfile b/Dockerfile
 FROM node
 COPY server.js .
 CMD node server.js
diff --git a/server.js b/server.js
 var http = require('http')

 var numRequests = 0

 function handleRequest(request, response){
  if(request.url == "/healthcheck"){
    response.end("Healthcheck OK")
  } else {
    numRequests++
    response.end(process.env.SERVER_NAME + ' requests: ' + numRequests);
  }
 }

 var server = http.createServer(handleRequest)

 server.listen(8080);
	var http = require('http')

	var numRequests = 0

	function handleRequest(request, response){
	if(request.url == "/healthcheck"){
	response.end("Healthcheck OK")
	} else {
	numRequests++
	response.end(process.env.SERVER_NAME + ' requests: ' + numRequests);
	}
	}

	var server = http.createServer(handleRequest)

	server.listen(8080);