<Host name="xxxx.com" appBase="/opt/web/xxxx" unpackWARs="true" autoDeploy="true"  xmlValidation="false" xmlNamespaceAware="false">
         <Context path="" docBase="/opt/web/xxxx" reloadable="true" debug="0" privileged="true">  
                      <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="d_access_log." sufFix=".txt" pattern="%h %l %u %t %r %s %b %T" resolveHosts="false"/>        
         </Context>          </Host>