Heroku 节点崩溃：at=error code=H10 desc="App crashed" method=GET path="/"答案

【问题标题】：Heroku Node Crash: at=error code=H10 desc="App crashed" method=GET path="/"Heroku 节点崩溃：at=error code=H10 desc="App crashed" method=GET path="/"
【发布时间】：2020-03-25 21:40:54
【问题描述】：

我在尝试部署我的节点应用程序时收到以下 Heroku 日志。我无法弄清楚造成这种情况的原因。我猜这与我的index.html 文件中的图标链接有关？

Heroku 日志

2020-03-25T14:07:37.323633+00:00 app[web.1]: > react-scripts start
2020-03-25T14:07:37.323633+00:00 app[web.1]: 
2020-03-25T14:07:40.667543+00:00 app[web.1]: ℹ ｢wds｣: Project is running at http://172.16.68.202/
2020-03-25T14:07:40.668023+00:00 app[web.1]: ℹ ｢wds｣: webpack output is served from
2020-03-25T14:07:40.668162+00:00 app[web.1]: ℹ ｢wds｣: Content not from webpack is served from /app/public
2020-03-25T14:07:40.668280+00:00 app[web.1]: ℹ ｢wds｣: 404s will fallback to /
2020-03-25T14:07:40.668531+00:00 app[web.1]: Starting the development server...
2020-03-25T14:07:40.668533+00:00 app[web.1]: 
2020-03-25T14:07:40.815780+00:00 heroku[web.1]: State changed from starting to crashed
2020-03-25T14:07:40.794329+00:00 heroku[web.1]: Process exited with status 0
2020-03-25T16:50:20.606050+00:00 heroku[web.1]: State changed from crashed to starting
2020-03-25T16:50:29.481448+00:00 heroku[web.1]: Starting process with command `npm start`
2020-03-25T16:50:32.126241+00:00 app[web.1]: npm WARN npm npm does not support Node.js v12.16.1
2020-03-25T16:50:32.126628+00:00 app[web.1]: npm WARN npm You should probably upgrade to a newer version of node as we
2020-03-25T16:50:32.126812+00:00 app[web.1]: npm WARN npm can't make any promises that npm will work with this version.
2020-03-25T16:50:32.127129+00:00 app[web.1]: npm WARN npm Supported releases of Node.js are the latest release of 6, 8, 9, 10, 11.
2020-03-25T16:50:32.127378+00:00 app[web.1]: npm WARN npm You can find the latest version at https://nodejs.org/
2020-03-25T16:50:32.263784+00:00 app[web.1]: 
2020-03-25T16:50:32.263791+00:00 app[web.1]: > project-x@0.1.0 start /app
2020-03-25T16:50:32.263792+00:00 app[web.1]: > react-scripts start
2020-03-25T16:50:32.263792+00:00 app[web.1]: 
2020-03-25T16:50:34.783181+00:00 app[web.1]: ℹ ｢wds｣: Project is running at http://172.18.253.226/
2020-03-25T16:50:34.783787+00:00 app[web.1]: ℹ ｢wds｣: webpack output is served from
2020-03-25T16:50:34.783888+00:00 app[web.1]: ℹ ｢wds｣: Content not from webpack is served from /app/public
2020-03-25T16:50:34.783977+00:00 app[web.1]: ℹ ｢wds｣: 404s will fallback to /
2020-03-25T16:50:34.784185+00:00 app[web.1]: Starting the development server...
2020-03-25T16:50:34.784187+00:00 app[web.1]: 
2020-03-25T16:50:34.903396+00:00 heroku[web.1]: State changed from starting to crashed
2020-03-25T16:50:34.886104+00:00 heroku[web.1]: Process exited with status 0
2020-03-25T20:32:58.790170+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hidden-stream-53835.herokuapp.com request_id=d958c692-68ad-4723-a7da-1b0fb261e74b fwd="73.60.116.154" dyno= connect= service= status=503 bytes= protocol=https
2020-03-25T20:32:59.217144+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hidden-stream-53835.herokuapp.com request_id=1e9dbfb7-070b-485e-906b-a30a2e0dcc35 fwd="73.60.116.154" dyno= connect= service= status=503 bytes= protocol=https

index.html

  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="theme-color" content="#000000" />
    <meta
      name="description"
      content="Web site created using create-react-app"
    />

【问题讨论】：

“应用程序崩溃”并没有告诉我们任何有用的信息。您的日志中还有其他内容吗？如果没有，请添加一些日志记录。
我不确定日志中的哪些信息对解决此问题有用或无用。关于我正在使用的 Node 版本，我看到了另一个警告（我提供了）。我使用的是 12.16.1，但因此降级到 10.0.0。不确定这是否会导致崩溃。谢谢
“项目在 0.0.0.202 运行”... “项目在 0.0.0.226 运行”——这些几乎肯定是错误的。他们来自哪里？
我更正了，应该是 172.16.68.202。谢谢
不，不应该。它应该是 Heroku 给你的任何 IP 地址和端口。再次，这个IP地址来自？

标签： node.js heroku deployment

【解决方案1】：

任何一次分配给您的 IP 地址都会经常更改。不要专门绑定到它们。

相反，绑定到所有可用的 IP 地址，通常由0.0.0.0 表示或根本不提供 IP 地址。确保还使用 Heroku 通过 PORT 环境变量指定的端口。

假设您使用的是 Express，something like this should work：

const express = require('express')
const PORT = process.env.PORT || 5000  # Fall back to port 5000 if process.env.PORT is not set

express()
  .listen(PORT, () => console.log(`Listening on ${ PORT }`))

【讨论】：