错误：监听 EADDRINUSE：地址已在使用 :::4000

Question

我一直在这个帖子上寻找答案：Node / Express: EADDRINUSE, Address already in use - Kill server

虽然我不认为它回答了我的问题，因为我不想杀死正在运行的进程而是重新启动服务。

$ npm run start

> graphql-basics@1.0.0 start /home/phill/Documents/graphql-course/graphql-basics
> nodemon src/index.js --exec babel-node

[nodemon] 1.17.5
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `babel-node src/index.js`
The server is up!


[nodemon] restarting due to changes...
[nodemon] starting `babel-node src/index.js`
events.js:174
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE: address already in use :::4000

基本上它会重启服务器而不杀死之前的进程？

手动终止进程不会解决此问题

这是我的package.json

{
  "name": "graphql-basics",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "nodemon src/index.js --exec babel-node",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "babel-cli": "^6.26.0",
    "babel-preset-env": "^1.7.0",
    "graphql-yoga": "^1.14.10"
  },
  "devDependencies": {
    "nodemon": "^1.17.5"
  }
}

const server = new GraphQLServer({
    typeDefs,
    resolvers
})

server.start(() => {
    console.log('The server is up!')
})

//should i use process.on('SIGTERM',...) and kill it somehow?

Answer 1

您有 2 个选项来解决此问题。

1. 使用root用户执行killall node命令
2. 设置可用端口。 var port = process.env.PORT || 8080;

Answer 2

Nodemon 提供了延迟选项。我通过在与您相同的情况下插入该选项来解决它。请参考以下链接。 github.com/nodemon/delaying-restarting

"start": "nodemon --delay 300ms src/index.js --exec babel-node"

{
  "name": "graphql-basics",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "nodemon --delay 300ms src/index.js --exec babel-node",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "babel-cli": "^6.26.0",
    "babel-preset-env": "^1.7.0",
    "graphql-yoga": "^1.14.10"
  },
  "devDependencies": {
    "nodemon": "^1.17.5"
  }
}