我正在尝试使用默认版本的20.04服务器Ubuntu和Apache与Node一起使全新基于云的服务器运行。Node服务器似乎正在运行，并报告4006端口已打开，但我认为我的Apache配置没有问题。请求将会非常非常长时间挂起，而节点终端中不显示任何错误信息。因此，故障必定存在于我的Apache配置中，因为我们得到以下Apache错误而无JS错误。
一段时间后出现请求错误
502 proxy error
Apache错误日志
[Sun Oct 17 20:58:56.608793 2021] [proxy:error] [pid 1596878] (111)Connection refused: AH00957: HTTP: attempt to connect to [::1]:4006 (localhost) failed
[Sun Oct 17 20:58:56.608909 2021] [proxy_http:error] [pid 1596878] [client 207.46.13.93:27392] AH01114: HTTP: failed to make connection to backend: localhost
虚拟主机
<VirtualHost IP_ADDRESS:80>
ServerName api.aDomain.com
Redirect permanent / https://api.aDomain.com/
</VirtualHost>
<IfModule mod_ssl.c>
<VirtualHost IP_ADDRESS:443>
ServerName api.aDomain.com
ProxyRequests on
LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so
LoadModule proxy_http_module /usr/lib/apache2/modules/mod_proxy_http.so
ProxyPass / http://localhost:4006/
ProxyPassReverse / http://localhost:4006/
#certificates SSL
SSLEngine on
SSLCACertificateFile /etc/ssl/api.aDomain.com/apimini.ca
SSLCertificateFile /etc/ssl/api.aDomain.com/apimini.crt
SSLCertificateKeyFile /etc/ssl/api.aDomain.com/apimini.key
ErrorLog ${APACHE_LOG_DIR}/error_api.aDomain.com.log
CustomLog ${APACHE_LOG_DIR}/access_api.aDomain.com.log combined
</VirtualHost>
</IfModule>
终端输出
[nodemon] 1.19.4
[nodemon] to restart at any time, enter `rs`
[nodemon] watching dir(s): *.*
[nodemon] watching extensions: js,mjs,json
[nodemon] starting `babel-node -r dotenv/config --inspect=9229 index.js`
Debugger listening on ws://127.0.0.1:9229/c1fcf271-aea8-47ff-910e-fe5a91fce6d2
For help, see: https://nodejs.org/en/docs/inspector
Browserslist: caniuse-lite is outdated. Please run next command `npm update`
Server ready at http://localhost:4006
Node服务器
import cors from 'cors'
import scrape from './src/api/routes/scrape'
const express = require('express')
const { ApolloServer, gql } = require('apollo-server-express')
const { postgraphile } = require('postgraphile')
const ConnectionFilterPlugin = require('postgraphile-plugin-connection-filter')
const dbHost = process.env.DB_HOST
const dbPort = process.env.DB_PORT
const dbName = process.env.DB_NAME
const dbUser = process.env.DB_USER
const dbPwd = process.env.DB_PWD
const dbUrl = dbPwd
? `postgres://${dbUser}:${dbPwd}@${dbHost}:${dbPort}/${dbName}`
: `postgres://${dbHost}:${dbPort}/${dbName}`
var corsOptions = {
origin: '*',
optionsSuccessStatus: 200, // some legacy browsers (IE11, various SmartTVs) choke on 204
}
async function main() {
// Construct a schema, using GraphQL schema language
const typeDefs = gql`
type Query {
hello: String
}
`
// Provide resolver functions for your schema fields
const resolvers = {
Query: {
hello: () => 'Hello world!',
},
}
const server = new ApolloServer({ typeDefs, resolvers })
const app = express()
app.use(cors(corsOptions))
app.use(
postgraphile(process.env.DATABASE_URL || dbUrl, 'public', {
appendPlugins: [ConnectionFilterPlugin],
watchPg: true,
graphiql: true,
enhanceGraphiql: true,
})
)
server.applyMiddleware({ app })
//Scraping Tools
scrape(app)
const port = 4006
await app.listen({ port })
console.log(` Server ready at http://localhost:${port}`)
}
main().catch(e => {
console.error(e)
process.exit(1)
})
启用的Apache模块
/etc/apache2/mods-enabled/proxy.conf /etc/apache2/mods-enabled/proxy.load /etc/apache2/mods-enabled/proxy_http.load
更新的错误日志
[Thu Oct 21 10:59:22.560608 2021] [proxy_http:error] [pid 10273] (70007)The timeout specified has expired: [client 93.115.195.232:8963] AH01102: error reading status line from remote server 127.0.0.1:4006, referer: https://miniatureawards.com/
[Thu Oct 21 10:59:22.560691 2021] [proxy:error] [pid 10273] [client 93.115.195.232:8963] AH00898: Error reading from remote server returned by /graphql, referer: https://miniatureawards.com/
curl/wget命令，查看是否返回任何内容。Apache配置看起来没问题。也许节点没有将套接字绑定到正确的网络接口。这只是猜测，因为您没有提及节点应用程序的任何信息。 - Marc/graphiql端点在没有任何模式的情况下加载，但确实加载了。这意味着代理可能正在工作，我需要确保 psql 权限正确，从逻辑上讲，这就是它对我的含义！ - Jamie HutberVirtualHost中，您设置了ProxyRequests on，这是用于正向代理，但实际上您定义了一个反向代理。我建议首先将ProxyRequests关闭（默认值）。从文档中可以看到，在典型的反向代理或网关配置中，此选项应设置为Off。 - Chris