node and number of jvm

[CommunityUser]

Hi App Dynamics Experts

I have one domain weblogic with 2 clusters, each cluster contains 4 jvms (4 weblogic managed servers)

If I want to install App Dynamics agents in these two weblogic clusters,

How many nodes AppDynamics controller will  see  for my two weblogics clusters ?

I mean 2 nodes or 8 nodes ?

Thanks a lot

Nicolas

[Arun_Dasetty]

Hi Nicolas,

We see one agent node is tied to one JVM instance / jvm process id so you would need to provide 8 agent node names and it will result in 8 nodes, with each agent node in controller UI represents 8 jvm instance, Hope that answers your query.

Regards,

Arun

[CommunityUser]

Hi Arun

Effectively, I have installed the appdynamics agents for each jvm of my weblogic cluster (there are a total of 4 jvms)

Of course, these jvms are all the same except of their process id which are different

If I understand what you have said, I will have in the flow graph a symbol of 4 nodes

But, in reality, there is only a symbol of one node as if  there is one jvm instead of 4 jvms

How can you explain this case ?

Thanks a lot

Best regards

Nicolas

[Arun_Dasetty]

Hi Nicolas,

Given that there are no connectivity issues as i believe from your comments that 4 jvms must be from same physical instance but have 4 different jvm pid or it is 4 jvm instances, we see you could be seeing only 1 agent node/1 jvm in controller ui could be due to that you are passing same agent node name for <node-name> xml element in controller-info.xml Or -Dappdynamics.agent.nodeName argument for all 4 jvm pids, because agent is tied to jvm pid and the node name should be different else the 3 other jvm pid will fail to register at Controller UI,  Check if that is the case here.

If above said is not the case, attach the following, to assist you further:

shell> ps -ef | grep "java" 
issue above command issued at physical instance where 4 jvm pids are running

Or 

cmd> JPS -v (in windows)

- archive version of agent logs from agent directories pointed in 4 jvm startup settings or jvm pids

- screenshot from controller UI depicting the issue

Regards,

Arun