Summary

A single node Crowd Data Center is showing duplicate nodes in Clustering information.

Environment

Crowd 4.1.0

Diagnosis

The following stack trace found in Crowd startup log:

2020-08-14 13:10:41,750 localhost-startStop-1 INFO [ContainerBase.[Catalina].[localhost].[*/crowd03*]] Initializing Spring root WebApplicationContext
2020-08-14 13:11:11,107 localhost-startStop-1 INFO [ContainerBase.[Catalina].[localhost].[*/crowd*]] Initializing Spring root WebApplicationContext

Two different context paths found on each node startup log:

• /crowd03
• /crowd

Cause

/crowd Context path present in the server.xml file is modified to a custom path:

<Context path="/crowd03" docBase="../../crowd-webapp">
          <Manager pathname=""/>
        </Context>

 Crowd will load two different context roots, which essentially will start two instances of Crowd if the /crowd context path is altered or added to the server.xml

Solution

Remove the default context path set by Crowd in <Crowd-Install>/apache-tomcat/conf/Catalina/localhost/crowd.xml file.

Example steps

1.  First perform a backup of the crowd.xml file in <Crowd-Install>/apache-tomcat/conf/Catalina/localhost to another directory.
2. From <Crowd-Install>/apache-tomcat/conf/Catalina/localhost, remove the crowd.xml file to prevent Tomcat from loading the /crowd context.
3. Restart Crowd

 If you have more than one Data Center node, please make sure that those steps are run for each node in your setup.