DokuWiki runs just fine on Dreamhost with a few settings.

If you want to support the DokuWiki author, you can signup through this link and use the promotional code DOKUWIKI. This will also give you a free domain.

DreamHost uses PHP4 by default. It is recommended to switch to PHP5 in the admin panel. This will not only give you a newer PHP version but will also switch to CGI mode where it is much simpler to setup permissions. Please Note as at Feb09: PHP 5 was added to all plans by DreamHost as of June 2005. As of September 2008, support for PHP4 was discontinued, so you can no longer switch back to PHP 4 from PHP 5 from the panel. Existing Dreamhost users can move to PHP5 and any new install is PHP5.

DreamHost makes web statistics available through the /stats directory. When using URL Rewriting with DokuWiki's default .htaccess these statistics will no longer be reachable. Use the following rules in your .htaccess instead:

RewriteEngine On
RewriteBase /

RewriteRule ^/?_media/(.*) lib/exe/fetch.php?media=$1 [QSA,L]
RewriteRule ^/?_detail/(.*) lib/exe/detail.php?media=$1 [QSA,L]
RewriteRule ^/?_export/([^/]+)/(.*) doku.php?do=export_$1&id=$2 [QSA,L]
RewriteRule ^$ doku.php  [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !^/(stats/|missing\.html|failed_auth\.html) [NC]
RewriteRule (.*) doku.php?id=$1 [QSA,L]
RewriteRule ^/?index\.php$ doku.php