I'm going to migrate some clients from one deployment server to a new one. Both are *nix and I can't change DNS names. Can you please tell me how I can do this?
There are 2 ways:
BEST: Create 2 different apps for the 2 versions of deploymentclient.conf: DCOLD and DCNEW. When you need apps to change DS, just deploy the appropriate app to the forwarders by modifying the serverclass.
ALTERNATE: You can control the forwarder DCs from the DS by "agent name" as well as by "hostname" and "IP Address"; read about it here:
http://docs.splunk.com/Documentation/Splunk/latest/Updating/Filterclients
http://docs.splunk.com/Documentation/Splunk/latest/Updating/Configuredeploymentclients#Set_a_client_...