如何弄清楚为什么所有子域名都指向 Ubuntu 中的一个文件夹

Question

我在 IP XXX.XX.XXX.XXX 上有一个 Laravel PHP 和 AngularJS Web 应用程序，当我加载任何一个IP 或任何子域名会加载var/www/html/example/application文件夹。例如 random.example.com 将指向该文件夹或https://XXX.XX.XXX.XXX将指向该文件夹。

当我将不同的域指向非服务器时，example.com不会发生这种情况。

然而，我的问题是，我不明白为什么。我本以为预期的行为是只有 subdomain.example.com 会指向它。服务器上是否还有其他可能导致这种情况的地方我应该留意？

以下是example.conf我在 /etc/apache2/sites-enabled 中使用的文件

    <VirtualHost *:443>
        ServerAdmin webmaster@localhost
        ServerName subdomain.example.com
        Alias /api /var/www/html/example/public
        <Directory /var/www/html/example/>
                Options Indexes FollowSymLinks
                AllowOverride All
                Require all granted
                RewriteEngine On
        </Directory>

        DocumentRoot /var/www/html/example/application
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
        SSLEngine on
        SSLCertificateFile  /etc/ssl/STAR_example_com.crt
        SSLCertificateKeyFile /etc/ssl/example.com.key
        SSLCertificateChainFile /etc/ssl/STAR_example_com.ca-bundle     
</VirtualHost>

<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        ServerName subdomain.example.com
        Alias /api /var/www/html/example/public
        <Directory /var/www/html/example/>
                Options Indexes FollowSymLinks
                AllowOverride All
                Require all granted
                RewriteEngine On
        </Directory>

        DocumentRoot /var/www/html/example/application
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
            # SSLEngine on
            # SSLCertificateFile      /etc/ssl/STAR_example_com.crt
            # SSLCertificateKeyFile /etc/ssl/example.com.key
            # SSLCertificateChainFile /etc/ssl/STAR_example_com.ca-bundle
</VirtualHost>

这是 /etc/apache2/sites-available 中的 000-default.conf 文件

<VirtualHost *:80>
#Redirect 403 /
#ErrorDocument 403 "Not allowed"

#Redirect 403 / 
#ErrorDocument 403 "Not allowed"


RewriteEngine On
RewriteCond %{HTTP_HOST} ^(.+)\.example\.com$ [OR]
RewriteCond %{HTTP_HOST} ^(.+)\.oldexample\.ie$
RewriteRule ^(.*)$ https://%1.example.com$1 [R=302,L]

<Directory /var/www/html>
            Options Indexes FollowSymLinks MultiViews
            AllowOverride All
            Order allow,deny
            allow from all
</Directory>

ServerAdmin webmaster@localhost
DocumentRoot /var/www/html

ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined

和 default-ssl.conf 在同一个目录中

<IfModule mod_ssl.c>
<VirtualHost _default_:443>
    ServerAdmin webmaster@localhost

    DocumentRoot /var/www/html

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    SSLEngine on

    SSLCertificateFile  /etc/ssl/certs/ssl-cert-snakeoil.pem
    SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key

    #SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire
    <FilesMatch "\.(cgi|shtml|phtml|php)$">
            SSLOptions +StdEnvVars
    </FilesMatch>
    <Directory /usr/lib/cgi-bin>
            SSLOptions +StdEnvVars
    </Directory>

</VirtualHost>