Primary Secondary server in Weblogic - session

Question

I have apache proxy web server ahead of 6 weblogic instances which are part of a single cluster.
For a client that hits my application the Apache's access logs shows the below loggin
/Replica/AddServlet;jsessionid=PvqTQtYfKLrzBHtT1dpcJX5WhryRgpTGBvMJ8pLbpJnSDR5p0K65!1647512983!-1661904304!1357731903334 HTTP/1.1" 200 284
How can I determine which out the six is the primary and which is the secondary weblogic server for this client request ?

Answer 1

You have to switch on the Apache DEBUG log, which notes the individual server HASH and maps it to the Managed server.
Turn on proxy debug by setting Debug=”ALL” in the proxy configuration file.
Example configuration for Apache plug-in (httpd.conf):
<Location /mywebapp>
SetHandlerweblogic-handler
WebLogicCluster sol1:8001,sol2:8001,sol3:8003
Debug ALL
DebugConfigInfo ON
WLLogFile /tmp/wlproxy.log
</Location>
You can then see the exact host:port for your primary and secondary for the request.
Example from http://www.bea-weblogic.com/weblogic-server-support-pattern-common-diagnostic-process-for-proxy-plug-in-problems.html
Or try this link
http://www.findsol.com/blog/weblogic-server-support-pattern-common-diagnostic-process-for-proxy-plug-in-problems/
Mon May 10 13:14:40 2004 getpreferredServersFromCookie: -2032354160!-457294087
Mon May 10 13:14:40 2004 GET Primary JVMID1: -2032354160
Mon May 10 13:14:40 2004 GET Secondary JVMID2: -457294087
Mon May 10 13:14:40 2004 [Found Primary]: 172.18.137.50:38625:65535
Mon May 10 13:14:40 2004 list[0].jvmid: -2032354160
Mon May 10 13:14:40 2004 secondary str: -457294087
Mon May 10 13:14:40 2004 list[1].jvmid: -457294087
Mon May 10 13:14:40 2004 secondary str: -457294087
Mon May 10 13:14:40 2004 [Found Secondary]: 172.18.137.54:38625:65535
Mon May 10 13:14:40 2004 Found 2 servers
Remember each time you restart the weblogic servers, new HASHes are used.