如何在本地和 hereko 服务器上使用命令行运行多个节点 js 服务。？

Question

I have multiple services in my node js app as below

.git
 domain
 public
 view
 .gitingore
 service1.js
 service2.js
 service3.js
 package.json
 package-lock.json
 Procfile
 README.md

service1.js code

var port = process.env.PORT_SERVICE1 || 8001;
 .....
 .....
 .....

service2.js code

 var port = process.env.PORT_SERVICE2 || 8002;
 .....
 .....
 .....

service3.js code

var port = process.env.PORT_SERVICE3 || 8003;
 .....
 .....
 .....

Currently i am running above3 services on windows as below..

 set PORT_SERVICE1 = 8001
 set PORT_SERVICE2 = 8002
 set PORT_SERVICE3 = 8003

and opening 3 different command promt to run all services

 node service1.js
 node service2.js
 node service3.js

I want to configure same in heroko Procfile file. but not able to set it?

How to set different port for all services in node js and run them all?

Answer 1

I suggest you using PM2

It allows you create complex config file, that will start all your applications with configs you've provided.

Here's an example of how to run multiple applications using config file

module.exports = {
  apps: [{
      name: 'sevice1',
      script: './services/sevice1',
      watch: true,
      env: {
        NODE_ENV: 'development',
      },
      env_production: {
        NODE_ENV: 'production',
      },
    }, {
      name: 'sevice2',
      script: './services/sevice2',
      watch: true,
      env: {
        NODE_ENV: 'development',
      },
      env_production: {
        NODE_ENV: 'production',
      },
    }],
};

Speaking of Heroku. PM2 provides Heroku integration . Hope this one helps!

Answer 2

@number16BusShelter suggested a good option. But if you want to do it quick then go for the below option.

Add below code in your Procfile:

web: node service1.js && node service2.js && node service3.js

Reference: Heroku