mod_vhost_aliasがすごかったｗ

ｈｔｔpd.confの
LoadModule vhost_alias_module modules/mod_vhost_alias.so

を有効にして、
<VirtualHost *:80>

ServerAdmin webmaster@%0
VirtualDocumentRoot /www/%0/public_html/
VirtualScriptAlias /www/%0/cgi-bin/

<Directory “/www/*/public_html”>
Options Indexes FollowSymLinks
AllowOverride all
Require all granted

ExpiresActive On
ExpiresByType image/gif “access plus 1 days”
ExpiresByType image/jpg “access plus 1 days”
ExpiresByType image/jpeg “access plus 1 days”
ExpiresByType image/png “access plus 30 days”
ExpiresByType application/x-javascript “access plus 20 days”
ExpiresByType text/css “access plus 20 days”

</Directory>
</VirtualHost>

これでこの階層にディレクトリを作れば、apacheを再起動しなくても自動でサイトが作れちゃう。

こんな書き方もできるよ

<VirtualHost *:80> 
    ServerAdmin info@example.com
    ServerName example.com
    ServerAlias *.example.com
    VirtualDocumentRoot /home/%2/public_html/%1
    ErrorLog logs/example.com-error_log
    CustomLog logs/example.com-access_log common
</VirtualHost>

sub.example.com の場合

%0  = sub.example.com
%1  = sub
%1+ = sub.example.com
%2  = example
%2+ = example.com