I have webapp deployed at / in Tomcat.
server.xml
Apache
httpd.conf
LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so
LoadModule proxy_http_module /usr/lib/apache2/modules/mod_proxy_http.so
LoadModule proxy_ajp_module /usr/lib/apache2/modules/mod_proxy_ajp.so
LoadModule proxy_balancer_module /usr/lib/apache2/modules/mod_proxy_balancer.so
BalancerMember ajp://127.0.0.1:8009 route=osmoz-tomcat-1 retry=5
Allow From All
ProxyPass balancer://tomcatservers/ stickysession=JSESSIONID nofailover=off
ProxyPassReverse /