Alibaba Cloud database cannot be connectedphpmyadminWhat should I do?
The Alibaba Cloud server configured using the one-click installation web tutorial is quite convenient to use, but occasionally there will be some inexplicable problems, such as being unable to log in to the database, being unable to change the website root directory, etc. Yes, it’s a pity that I don’t understand Linux servers, so if there is any problem, I can only ask others or Baidu for help, which is quite inconvenient. It seems that I need to find some time to learn Linux server.
Record the most common database login problems and solutions encountered since using Alibaba Cloud Server:
Use xftp to operate files on Alibaba Cloud Server, and encounter interruptions when submitting forms. Internet, the form submission failed, and when I tried to submit it again, it prompted a database connection error. At this time, when I accessed phpmyadmin, it prompted a 2002 error. When Baidu found a solution, all I saw was that the configuration file needed to be changed, change '127.0.0.1' Change it to 'localhost' or something like that.
Solution.#2002 Unable to log in to the MySQL server
Copy config.sample.inc.php to config.inc.php
This error occurs, indicating that there is no Connect to the database. Modify the config.inc.php file,
The code is as follows:
Change $cfg['Servers'][$i]['host'] = 'localhost';
Change to $cfg['Servers'][$i]['host'] = '127.0.0.1';
or
Modify php.ini: mysql.default_socket = /tmp /mysql.sock
After imitating the configuration file and modifying it, I found that the problem was still not solved. So I used Alibaba Cloud's snapshot rollback to restore the file to an earlier stage.
After the snapshot is rolled back, Alibaba Cloud returns to an earlier state. After restarting the system and trying to access the URL again, a message appears that the page cannot be opened. At first, Baidu tried for a long time but couldn't find a solution. Finally, when I couldn't figure it out, I asked a friend who knew Linux for help, and I realized that it turned out that the service needed to be restarted after the Alibaba Cloud system was restarted.
Just two lines of code start the Alibaba Cloud service, and then you can visit the website.
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表的主键是一列或多列,用于唯一标识表中每条记录。设置主键的步骤如下:登录 phpMyAdmin。选择数据库和表。勾选要作为主键的列。点击 "保存更改"。主键具有数据完整性、查找速度和关系建模方面的好处。

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PHPMyAdmin日志文件的默认位置:Linux/Unix/macOS:/var/log/phpmyadminWindows:C:\xampp\phpMyAdmin\logs\日志文件用途:故障排除审计安全性

phpMyAdmin 中删除数据表的步骤:选择数据库和数据表;点击“操作”选项卡;选择“删除”选项;确认并执行删除操作。

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可以在 phpMyAdmin 中“结构”选项卡下的“视图”子菜单中找到关联视图。要访问它们,只需选择数据库、点击“结构”选项卡、然后点击“视图”子菜单。


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