在谷歌云引擎（无服务器）上部署独立 webpack + react 应用程序时出现 502 错误网关答案

【问题标题】：502 bad gateway while deploying stand alone webpack + react application on google cloud engine (no server)在谷歌云引擎（无服务器）上部署独立 webpack + react 应用程序时出现 502 错误网关
【发布时间】：2020-01-11 16:00:25
【问题描述】：

我使用 webpack 创建了一个反应应用程序，并试图将其部署到谷歌应用引擎。该应用程序没有服务器，一切都在浏览器中完成。我之前已经成功部署了简单的 react 应用程序，但我认为 webpack 入口点是目前让我头疼的原因。

我的应用程序部署成功，但导航到 URL 时，我收到 502 bad gateway 错误。查看$gcloud app logs read 时，我没有发现任何问题，我的应用程序已成功编译和构建，谷歌云控制台中的日志也没有任何帮助。我已经尝试将我所有的 devDependencies 移动到依赖项。

我的 webpack 配置：

const path = require('path');
const webpack = require('webpack');

module.exports = {
    entry: './src/index.js',
    mode: 'development',
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: /(node_modules|bower_components)/,
                loader: 'babel-loader',
                options: {
                    presets: [
                        '@babel/env'
                    ]
                }
            },
            {
                test: /\.css$/,
                use: [
                    'style-loader',
                    'css-loader'
                ]
            },
            {
                test: /\.(png|svg|otf)$/,
                loader: 'file-loader',
                options: {
                    name: '[path][name].[ext]'
                }
            }
        ]
    },
    resolve: {
        extensions: ['*', '.js', '.jsx']
    },
    output: {
        path: path.resolve(__dirname, 'dist/'),
        publicPath: '/dist/',
        filename: 'bundle.js'
    },
    devServer: {
        contentBase: path.join(__dirname, 'public/'),
        port: 8080,
        publicPath: 'http://localhost:8080/dist/',
        hot: true
    },
    devtool: "source-map",
    plugins: [new webpack.HotModuleReplacementPlugin()]
};

app.yaml：

# [START app_yaml]
env: flex
runtime: nodejs
# [END app_yaml]

package.json:

{
  "name": "my-app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "webpack-dev-server --mode development",
    "build": "webpack --config webpack.config.js"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/cli": "^7.1.0",
    "@babel/core": "^7.1.0",
    "@babel/preset-env": "^7.1.0",
    "@babel/preset-react": "^7.0.0",
    "babel-loader": "^8.0.2",
    "css-loader": "^1.0.0",
    "d3": "^5.11.0",
    "file-loader": "^4.2.0",
    "react": "^16.5.2",
    "react-dom": "^16.5.2",
    "react-masonry-css": "^1.0.12",
    "style-loader": "^0.23.0",
    "webpack": "^4.19.1",
    "webpack-cli": "^3.1.1",
    "webpack-dev-server": "^3.8.0"
  },
  "dependencies": {
    "bootstrap": "^4.3.1",
    "react-hot-loader": "^4.3.11",
    "webpack-dev-server": "^3.8.0",
    "webpack": "^4.19.1",
    "webpack-cli": "^3.1.1",
    "@babel/cli": "^7.1.0",
    "@babel/core": "^7.1.0",
    "@babel/preset-env": "^7.1.0",
    "@babel/preset-react": "^7.0.0",
    "babel-loader": "^8.0.2",
    "css-loader": "^1.0.0",
    "d3": "^5.11.0",
    "file-loader": "^4.2.0",
    "react": "^16.5.2",
    "react-dom": "^16.5.2",
    "react-masonry-css": "^1.0.12",
    "style-loader": "^0.23.0"
  }
}

【问题讨论】：

标签： reactjs google-app-engine webpack

【解决方案1】：

如果一切设置正确，可能的原因之一是scalability。如果不是可扩展性问题，您是否有任何支持包/免费试用版？我建议您直接在support center 中打开支持票证，否则您可以通过Google Issue Tracker 联系 Google，因为 5XX 错误可能由不同的原因引起，因此很难从 SO 中排除故障。

【讨论】：