Bulk Creation of target instances & sync

Question

In looking through the Extensibility doc it looks like emctl (config agent addtarget) would be used to
do a bulk create of target instances. Is that correct?
Using an example of a plug-in to monitor an application server domain and creating target instances
for each server and cluster (in an automated fashion). The plug-in would be installed on one agent.
Run and OS job/ program which would make a jmx call to find the clusters and servers then run the
emctl commands to create the target instances.
Is that how something like this would be done, or am I missing a more straightforward way?
Now to keep the OEM target instances in sync with the application server domain, I'm thinking I need
to periodically compare the emctl listtargets info to what is currently in the application domain.
This question is just related to trying to "import" the tree of managed items (meaning the target
instances).

Answer 1

There are 2 utilities you can use to create target instances: emctl and emcli.
emctl is local to a specific agent and you must be on a particular agent's host to run its emctl
With emcli you can install the emcli client wherever you want and it will talk to the OMS to do the instance creation. You'll have to specify which agents you want to put the target instances on, but through a single emcli client you could create target instances on every agent in your enterprise.