xtl's questions

我有一个库存的、几乎未修改的 Visual Studio 模板 ASP.NET Core 应用程序，我试图在 Ubuntu 18.04 上运行。我已遵循本指南：https ://docs.microsoft.com/en-gb/aspnet/core/host-and-deploy/linux-apache?view=aspnetcore-3.1 。

经过一段时间的打击和失踪后，我设法让 ASP.NET 服务运行。但是，当我访问我的页面时，我看到了 503 Service Unavailable 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>

这是systemctl status tpanel（我的 ASP 守护程序）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，当我去的时候，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：

• 我有另一个使用 5001 端口的不相关应用程序正在运行，但我用其他东西替换了它，所以它应该不是问题
• 我是否将应用程序的端口设置为33138or似乎并不重要5001，它不会改变任何东西

我想创建一个每天都会运行的事件，看看某个帐户是否很快就会过期。该soon_expires单元格稍后将由 Bash 脚本使用，该脚本会向相关用户发送电子邮件，通知他情况。

这是我的活动内容（使用 phpmyadmin）：

SELECT * FROM users;

IF DATEDIFF(expirationtime, CURDATE()) < 45 THEN
    SET soon_expires = 1; 
ELSE 
    SET soon_expires = 0; 
END IF;

但是，它返回一个错误，说

#1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IF DATEDIFF(expirationtime, CURDATE()) < 45 THEN SET soon_expires = 1; EL' at line 3

我还尝试创建一个触发器，它按预期工作。但我意识到触发器只会在行更新时运行 -expirationtime或多或少是静态的，所以触发器是不够的。

所以 mysqldump 抛出以下错误：

mysqldump: [ERROR] Found option without preceding group in config file /etc/mysql/my.cnf at line 22!
mysqldump: [ERROR] Fatal error in defaults handling. Program aborted!

我的 my.cnf 是超级基本的：

#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html 
#

# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/
event-scheduler=ENABLED

附带问题：我应该在我的配置文件中添加一些内容以提高安全性吗？我能以某种方式压缩我的表吗，最好是使用 phpmyadmin？

我有一个/var/ftp/pub具有drwxr--r--ftpuser 权限的目录。我把我的文件放在那里，但匿名帐户看不到它们。文件本身有-rw-r--r--权限。

这可能是权限问题，但是我尝试了各种权限代码，但都没有用。它可能与连接无关，因为如果我使用 Total Commander，它只会显示空目录。如果我通过浏览器访问它，它会显示“ERR_FTP_FAILED”。Ftpuser 可以很好地查看文件。