代理：错误] [pid 137137]（111）连接被拒绝：AH00957：HTTP：尝试连接到 ip：49000

Question

我的网站运行良好，然后我进行了更新nuxt.config.js。之后，网站开始显示Service Unavailable。

我正在使用 pm2 来启动/部署应用程序。它的 vps 服务器中装有 apache。

其显示：

Service Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

但，如果我运行，npm run dev网站加载正常，没有任何问题。此外，我使用检查了状态pm2 list，它显示该应用程序处于在线状态。

我的 package.json

{
  "name": "nuxtjs",
  "version": "1.0.0",
  "private": true,
  "scripts": {
    "dev": "nuxt --hostname domain.link --port 49000",
    "build": "nuxt build",
    "start": "nuxt start",
    "generate": "nuxt generate",
    "deploy": "pm2 start npm --name nuxtjs -- start"
  },
  "dependencies": {
    "@nuxtjs/axios": "^5.13.6",
    "@yeger/vue-masonry-wall": "^3.0.16",
    "core-js": "^3.19.3",
    "nuxt": "^2.15.8",
    "pm2": "^5.1.2",
    "vue": "^2.6.14",
    "vue-server-renderer": "^2.6.14",
    "vue-template-compiler": "^2.6.14",
    "webpack": "^4.46.0"
  },
  "devDependencies": {},
  "config": {
    "nuxt": {
      "host": "0.0.0.0",
      "port": "49000"
    }
  }
}

我的domain.link.conf长相是这样的：

<VirtualHost *:80>

    ServerName domain.link
    ServerAlias www.domain.link
    ServerAdmin [email protected]

    DocumentRoot /var/www/html
    <Directory /var/www/html/>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Require all granted
    </Directory>

    ProxyRequests Off
    ProxyPreserveHost On
    ProxyVia Full

    <Proxy *>
        Require all granted
    </Proxy>

    ProxyPass / http://domain.link:49000/
    ProxyPassReverse / http://domain.link:49000/

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

</VirtualHost>

但是，如果我检查apache2/error.log它显示：

[Sun Feb 06 09:15:31.555004 2022] [proxy:error] [pid 137137] (111)Connection refused: AH00957: HTTP: attempt to connect to ip:49000 (domain.link) failed
[Sun Feb 06 09:15:31.555068 2022] [proxy_http:error] [pid 137137] [client 27.34.104.213:56874] AH01114: HTTP: failed to make connection to backend: domain.link, referer: http://domain.link/