View source for How to host multiple sites on one apache server

一台服务器放多个网站，无外乎子目录、子域名两种方法。

== 子目录 ==
<syntaxhighlight lang="apache" line>
<VirtualHost *:80>
    ServerName sample.com
    DocumentRoot /var/www/site1
    <Directory /var/www/site1>
        AllowOverride All
        Require all granted
    </Directory>

    Alias /site2 /var/www/site2
    <Directory /var/www/site2>
        AllowOverride All
        Require all granted
    </Directory>

    Alias /site3 /var/www/site3
    <Directory /var/www/site3>
        AllowOverride All
        Require all granted
    </Directory>

    Alias /site4 /var/www/site4
    <Directory /var/www/site4>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

# 这种方法的要点在于厘清三个没人说但很符合直觉的共识：
# 如果有多个 xxx.conf，则 apache 会按照首字母排序读取第一个配置
# 如果想一个域名的子目录下托管多个网站，实现的方式则是第一个默认读取，后续的通过 Alias /subdirectory 读取
# DocumentRoot 是 index.html 或 index.php 的目录
</syntaxhighlight>

== 子域名 ==
<syntaxhighlight lang="apache" line>
<VirtualHost *:80>
    ServerName site1.sample.com
    DocumentRoot /var/www/site1
    <Directory /var/www/site1>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

<VirtualHost *:80>
    ServerName site2.sample.com
    DocumentRoot /var/www/site2
    <Directory /var/www/site2>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

<VirtualHost *:80>
    ServerName site3.sample.com
    DocumentRoot /var/www/site3
    <Directory /var/www/site3>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

<VirtualHost *:80>
    ServerName site4.sample.com
    DocumentRoot /var/www/site4
    <Directory /var/www/site4>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

# 子域名的多网站托管方式，很符合单网站托管方式操作方法。只需注意一点即可：
# ServerName 是你注册的域名 yourdomain.com，ServerAlias 可以是 www.yourdomain.com
</syntaxhighlight>

最后，不论子目录托管多站，还是子域名托管多站，所牵涉的目录都要在 Directory 里设定权限，有时还涉及 FollowSymLinks 让服务器有权限读取符号链接。改完配置不要忘记<code>systemctl reload apache2</code>，字符别敲错了。

鸣谢：本文核心来自于 ChatGPT，感谢这位最好的老师。