I have installed the log agent on two local(non-azure) domain DC's to try to get the DNS requests and other event log events. I am able to see the event log events from these servers in queries but I don't get any DNS request info in Sentinel. The documentation makes it seem that installing the client is all that's required.
What additional configuration is needed to get the DNS requests? Both servers are Server 2012 R2.
I had the same problem. I found that in the DNS Analytics solution added to the same workspace that I hadn't added a "Talkative Client Threshold" to the configuration for that. As soon as I did that, it started updating.