How remote instances work on Coldfusion Clustering?

[Deepak Kumar Padhy]

I have just decided to set up my site using ColdFusion clustering in the staging environment. I need to find out what code adjustments are required when we move to a cluster environment. I have two machines where Coldfusion server is installed. Till now Steps I followed:

1. On CFServer_1 I have created a instance.(cfinstance_1)
2. On CFServer_2 I have created another instance. (cfinstance_2)
3. On CFServer_1 I have created a Cluster using these two instances.
4. Now on CFServer_1 I have created a IIS site(testsite.com) pointing to my codebase.
5. Now On CFServer_1, Using the Web Configuration Tool I have associated testsite.com with the cluster.

Now my question is Do I also need to set up the code base on the second server(CFServer_2), Create a site in IIS with same name(testsite.com) and associate the site with the cfinstance_2?

[vishu_13]

Hi Deepak,

Everything is correct

Do not worry, you need not to create a site/folder in the server where you have cfinstance_2. Just place the .cfm in the webroot only and I believe IIS is configured in the machine where you have cfinstance_1.

HTH

Thanks
VJ

[Deepak Kumar Padhy]

Yes IIS is configured on cfinstance_1. So basically all my project files and folders must be on both the machines.Am I correct?

[vishu_13]

Place the cfm in 2 different folders

1. in the webroot (say C:\inetpub\wwwroot)

2. in the cfinstance_2 webroot which is the other server (server 2) where you have this instance. The path will be C:\ColdFusion11\cfinstance_2\wwwroot

Thanks
VJ

[Deepak Kumar Padhy]

Thanks VJ, for you reply. Now everything is working fine. But I have one more query. Actually I have two instances from my local machine and one instance from remote server. Session replication is not working properly. Session replication works fine when i switch between the two local instances (sessionid remains same) , but the time when it hits to the remote server instance the sessionid changes and all my session variable are lost. I have followed  all the steps exactly mentioned on this link Adobe ColdFusion 10 * Enterprise Manager section .   Do I need any other setting changes?

Any Help would be greatly appreciated.

Thanks,

Deepak Kumar

[vishu_13]

Check this thread : https://forums.adobe.com/message/5616340#5616340

Also, make sure when you add the instances in the cluster then you must check the "Session Replication" option

HTH

Thanks

VJ

[Deepak Kumar Padhy · Accepted solution]

The Key point is

ColdFusion 10 servers must be Enterprise Edition for Session Replication To Work.

As in Developer Edition you will never see a option(Check box) for enabling session replication. Its so strange that some forums explains that "Deselecting the Sticky Session" option leads to session replication, which I tried a lot on my local dev edition but did not worked. I do not understand why Adobe does not explain these things properly on the documentation.

Thanks a lot for the info.

Thanks

Deepak Kumar