Tomcat record load balancing real User IP address in linux

Tomcat has nginx or other software to do load balancing, Tomcat needs to record the real client address, need to define the following in host or context:

The code is as follows	Copy Code
<valve classname= "Org.apache.catalina.valves.AccessLogValve" directory= "Logs" Prefix= "Localhost_access_log." suffix= ". txt" pattern= "%{x-forwarded-for}i%h%l%u%t%r%s%b" resolvehosts= "false"/ >

Note: The above%{x-forwarded-for}i represents the client's true address, and the default%a only records the load balancing address.