1 Correct answer
Hi Richard 
Two important points for ColdFusion 10 Session Replication
1> ColdFusion 10 servers must be Enterprise Edition
2> All the Servers(Machines) should be under same Network (same subnet)
Below is the example of two IP Addresses in the same Subnet
10.40.166.xx (say 34)
10.40.166.xx (say 121)
Test Application.cfc and Test.cfm (At the bottom)
Steps to perform:
Enable the J2EE session variables for both the ColdFusion servers under Memory Variables in ColdFusion Administrator
Create a local instance
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8
Replies
Hi Richard 
Two important points for ColdFusion 10 Session Replication
1> ColdFusion 10 servers must be Enterprise Edition
2> All the Servers(Machines) should be under same Network (same subnet)
Below is the example of two IP Addresses in the same Subnet
10.40.166.xx (say 34)
10.40.166.xx (say 121)
Test Application.cfc and Test.cfm (At the bottom)
Steps to perform:
Enable the J2EE session variables for both the ColdFusion servers under Memory Variables in ColdFusion Administrator
Create a local instance (say test1) and create a remote instance (say test 2) on the remote machine.
Go ahead and Register the remote instance (test2) in the ColdFusion Administrator . Create a cluster and add both the instances (test1 and test2).
Now add the cluster tag information in the server.xml (between </host> and </engine>) of the remote instance using the help document of ColdFusion 10 mentioned below
http://help.adobe.com/en_US/ColdFusion/10.0/Admin/WSc3ff6d0ea77859461172e0811cbf363c31-7ffa.html
NOTE : Make sure you change the multicast port in the server.xml of the remote instance with the Multicast port number when you create cluster in ColdFusion Admin console.
Open the context.xml of the remote instance (test2) and make sure that the “Manager pathname” is comment out.
Also, make sure that in the context.xml of local machine instance (test1), “Manager pathname” is comment out.
Stop and Start remote instance first (test2) using command prompt and then stop and start instance (test1) using command prompt.
Place the App folder in the wwwroot of both the instances. Create a cluster using the Web Server Configuration tool using the cluster and then test the Session replication behavior.
Also, place the .cfc and .cfm in Web root folder (wwwroot) and then try to access the Test.cfm from there. Then note down the session ID and instance name, refresh the page and observe that the Session ID is same for other instance or not. You can stop any one instance and refresh the same page then check the same instance is getting the same session ID or not.
Application.cfc
<cfcomponent>
<cfset this.name = "SessionApp" />
<cfset this.sessionmanagement = "true" />
<cfset this.sessiontimeout = createTimeSpan(0,5,0,0) />
</cfcomponent>
Test.cfm
<cfset Session.svar="Test">
<cfdump var="#Session#" />
<cfscript>
hostaddress = createObject("java", "java.net.InetAddress").localhost.getHostAddress();
</cfscript>
IP Address: <cfdump var="#hostaddress#"><br />
Hope it helps
VJ 
Hi rdjanna
Once you go to the main instance say cfusion in the server one then under Enterprise manager , click on Instance Manager and click on Register Remote Instance.
NOTE : This is an Enterprise feature and this option will be available on the default/main instance (say cfusion) which gets created at the time of CF install
Thanks
VJ
As you are creating the cluster in server 1 then server would not have the info for the same. That is why, you need to add the cluster info in the server.xml of the other instance(server2) as explained above
Now add the cluster tag information in the server.xml (between </host> and </engine>) of the remote instance using the help document of ColdFusion 10 mentioned below
http://help.adobe.com/en_US/ColdFusion/10.0/Admin/WSc3ff6d0ea778594611 72e0811cbf363c31-7ffa.html
Yes, both the instances have same settings. Also, if you want the load balancer that if 1 server fails then the request with same session goes to server 2, then the same will happen for cf admin.
Thanks
VJ
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