Saturday, August 16, 2014

Network Error When Adding DAG Member in DR Site

I was adding a new DAG member in a disaster recovery (DR) site and got an error about networking. The error was as follows:
A server-side administrative operation has failed. 'GetDagNetworkConfig' failed on the server. Error: The NetworkManager has not yet been initialized. Check the event logs to determine the cause. [Server:] It was running the command 'Get-DatabaseAvailabilityGroupNetwork | Sort-Objects -Property Name'.
This error is due to Active Directory replication latency to the DR site. The server in the DR site does not have the Active Directory changes in the configuration partition yet. However, if you look at Failover Cluster Manager, the new server is up in the DAG cluster.

You have two options:
  1. Wait for replication to complete. This typically takes 15 minutes between sites.
  2. Trigger replication to speed it up. After I triggered replication to the remote site and then triggered replication back the error was gone right away and I could move on with adding my database copies for the DR site.