Folks,

My infrastructure team want to build a Health Check procedure that checks all 
the nodes behind the load balancer.  
If we just sent a URL request to the LB in front of the mid-tier servers, we do 
not know which path the request will go. 

How can be best determine the path?

We could implement a servlet in the mid-tier tomcat that connects to each AR 
Server. If LB routes the sessions depending on the TCP port (e.g. port 2001 
goes to AR Server node 1, port 2002 to AR Server 2 etc.) we could have a simple 
servlet with 2 parameters:
Server name (which is always the LB alias) and port (allows us to choose the AR 
Server we want to check). The servlet should implement one or more API calls to 
the AR Server, e.g. retrieve data from a table. We might be able to implement 
this as a JSP.

Have anyone done this? Or is the another simple solution out there?

Thanks,
Terje

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