I have been using this configuration, which worked nicely for many geronimo versions now. The section /dojo/ has been added today.
<Proxy balancer://g-backend> BalancerMember ajp://127.0.0.1:8009 </Proxy> ProxyPass /console/ balancer://g-backend/console/ ProxyPassReverse /console/ balancer://g-backend/console/ ProxyPass /dojo/ balancer://g-backend/dojo/ ProxyPassReverse /dojo/ balancer://g-backend/dojo/ -- Johannes Weberhofer Weberhofer GmbH, Austria, Vienna