Create a backup of the file

server.xml

and call it

server.xml.bak

.

Enable AJP connector by removing the comment indicator from the line

<connection port="18009" enableLookup="false" redirectPort="18443" protocol="AJP/1.3"/>

.

Change the value of the attribute

jvmRoute

on the element

Engine

to the physical computer name, for example,

Tomcat-A

. The value of the

jvmRoute

attribute must be unique for each Tomcat instance, therefore, use the computer name. Otherwise, the load balancer cannot consistently route the requests and sessions to the correct machine.