我在AWS EC2同一个实例下挂了2个WordPress，第一个一切正常，第二个除了主页，访问其他页面都提示“The requested URL was not found on this server”。原来是站点2缺少.htaccess文件。

（1）问题描述

我在AWS EC2同一个实例下挂了2个wordpress，第一个一切正常，第二个除了主页，访问其他页面都提示“The requested URL was not found on this server”。最开始以为是文件权限的原因，还花了不少时间，较为系统了解了下文件的操作权限（详情见《将AWS EC2中网页服务器目录的权限设到最优》），仔细设置好文件（夹）权限后，并且再次检查apache2/sites-available/下的配置文件，还是不行。

（2）解决方法

最后在StackOverflow提问（问题在这里），今天得到回答，提示我检查.htaccess文件。一检查，才发现站点2压根就没有.htaccess文件，于是在站点2目录下创建之，内容如下：

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

现在一切正常了。

（3）.htaccess

关于.htaccess，摘抄维基百科词条.htaccess部分内容如下：

A .htaccess (hypertext access) file is a directory)-level configuration file supported by several web servers, that allows for decentralized management of web server configuration. They are placed inside the web tree, and are able to override a subset of the server's global configuration for the directory that they are in, and all sub-directories.[1]

The original purpose of .htaccess—reflected in its name—was to allow per-directory access control by, for example, requiring a password to access the content. More commonly, however, the .htaccess files override many other configuration settings such as content type,character set, CGI handlers, etc.