Ixp stopped working post upgrade of Idash to latest version, both applications running on same node. both the tools were up and running before the upgrade.
Release : 11.3.6
The catalina.out logs showed the following error
"java.net.BindException: Address already in use"
This means that another application has bound to one of the ports specified in your apache-tomcat/conf/server.xml Connectors, preventing Tomcat from binding the port.
Identified that port 8181 was configured for both idash and ixp. They were using different tomcat on the same server.
Once we stopped the iDash the iXP loaded fine.
For a permanent solution use different ports for the two different tomcat instances