ASP.NET Core 应用程序在 Ubuntu 18.04 上响应 503 服务不可用

ASP.NET Core 应用程序在 Ubuntu 18.04 上响应 503 服务不可用

我有一个几乎未经修改的 Visual Studio 模板 ASP.NET Core 应用程序,我正尝试在 Ubuntu 18.04 上运行。我遵循了以下指南:https://docs.microsoft.com/en-gb/aspnet/core/host-and-deploy/linux-apache?view=aspnetcore-3.1

经过一段时间的尝试和失败后,我终于让 ASP.NET 服务运行起来了。但是当我访问我的页面时,我看到了 503 服务不可用错误。

我的 Apache 配置:

<IfModule mod_ssl.c>
<VirtualHost *:80>
        ServerName example.com
        Redirect / https://example.com
        Redirect /panel https://example.com/panel
        Redirect /privacy https://example.com/privacy
</VirtualHost>

<VirtualHost *:443>
        ServerName example.com
        DocumentRoot /var/www/
        ServerAdmin [email protected]

        RewriteEngine On
        ErrorLog "/var/log/apache2/rewrite"
        LogLevel alert rewrite:trace6

        # ASP.NET application
        # launchSettings.json is configured to listen on this port
        ProxyPass /panel https://localhost:33138/
        ProxyPassReverse /panel https://localhost:33138/

        ProxyPass /api/socket ws://localhost:44909/api/socket
        ProxyPassReverse /api/socket ws://localhost:44909/api/socket

        ProxyPass /pgadmin4 !
        ProxyPass /privacy !
        ProxyPass /contact !
        ProxyPass /panel !

        ProxyPass / http://localhost:44909/
        ProxyPassReverse / http://localhost:44909/

        SSLEngine on
        SSLOptions +StrictRequire
        SSLProtocol TLSv1
        ServerAlias example.com
        SSLCertificateFile /etc/letsencrypt/live/example.com/fullchain.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/example.com/privkey.pem
        Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
</IfModule>

systemctl status tpanel这是(我的 ASP 守护进程)的结果:

● tpanel.service - a .NET Core 3.1 server
   Loaded: loaded (/etc/systemd/system/tpanel.service; disabled; vendor preset: enabled)
   Active: active (running) since Fri 2019-12-13 10:16:21 CET; 4h 1min ago
 Main PID: 2765 (dotnet)
    Tasks: 16 (limit: 4915)
   CGroup: /system.slice/tpanel.service
           └─2765 /usr/bin/dotnet /var/www/TPanel/publish/TPanel.dll

Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Now listening on: http://localhost:5000
Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Now listening on: https://localhost:5001
Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Application started. Press Ctrl+C to shut down.
Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Hosting environment: Production
Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Content root path: /var/www/TPanel/publish

launchSettings.json

{
  "iisSettings": {
    "windowsAuthentication": false, 
    "anonymousAuthentication": true, 
    "iisExpress": {
      "applicationUrl": "http://localhost:50015",
      "sslPort": 44313
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "TPanel": {
      "commandName": "TPanel",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "applicationUrl": "http://localhost:33138"
    }
  }
}

但就像我说的,当我访问时,example.com/panel我看到了 503 错误。我网站的其他部分运行良好。

其他信息:

  • 我正在运行另一个不相关的应用程序,该应用程序使用了 5001 端口,但我用其他应用程序替换了它,所以这应该不是问题
  • 似乎无论我将应用程序的端口设置为33138或 都无关紧要5001,它都不会改变任何东西

答案1

launchSettings.json是 VS Code 的东西。它在这里不做任何事情。

您的应用程序正在端口 5000(HTTP)和 5001(HTTPS)上运行,这是我们可以在日志中看到的不可否认的事实:

Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Now listening on: http://localhost:5000
Dec 13 10:16:22 vps-example dotnet[2765]: info: Microsoft.Hosting.Lifetime[0]
Dec 13 10:16:22 vps-example dotnet[2765]:       Now listening on: https://localhost:5001

Apache 配置为连接到端口 33138 上的应用程序:

    ProxyPass /panel https://localhost:33138/
    ProxyPassReverse /panel https://localhost:33138/

该应用程序未监听该端口,因此 503 – 由 Apache 发送,而不是 ASP.NET Core。

修复应用程序的监听端口。例如,在appsettings.json或通过ASPNETCORE_URLS。更多信息可用这里

顺便说一句, 中的尾部斜杠不匹配ProxyPass。这可能会导致其他问题。

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