Register a DAG IP (ipconfig /registerdns for DAG’S)

I ran into an issue recently where I needed to register the IP of a DAG. I discovered this wasn’t well documented and it took a while to figure out how to get it registered.


I first tried running ipconfig /registerdns on the primary active manager. To find the primary active manager you must run


get-databaseavailabilitygroup <name> -status | select name,primaryactivemanager


But that did not work. What does work is running,

cluster . res "Cluster Name" /registerdns

on any of the cluster nodes.


Also note:

The DAG will attempt to register on its own at some random time within 2 hours of midnight.


Hope it helps.



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