This document gives step-by-step instructions for deploying the Maven website http://maven.apache.org.
Be sure that:
$ svn checkout https://svn.apache.org/repos/asf/maven/site site
site$ mvn site
You could also use the stage goal of the Maven Site Plugin to verify the site output. For instance:
site$ mvn site:stage -DstagingDirectory=/tmp/maven-website
site$ mvn site-deploy
It will copy the site to the site.deploy.url which is currently defined in the pom.xml as scp://people.apache.org/www/maven.apache.org/
Note: It will take an hour or so to sync.