So, we changed out all four DCs on a domain with approximately 600 servers. It's a mixture of both physical and VM servers and a mixture of some 2003, 2008 and 2012 servers.
All of the servers have statically assigned IP addresses and they all have statically assigned DNS.
To keep the world from ending, when the old DCs went away, I assigned the old IP addresses to the new servers as a second IP. That way anything looking for DNS or LDAP or anything else based on the old DCs IP would still work.
Now I need to change the statically assigned DNS settings on the NICs for 600 servers.
Now, I could leave the old IPs in place, but I don't like changing IP addresses on DCs when they were promoted and began replicating with one IP. Some rules stick in my head like never try and change the name of a DC after it's promoted and never change it's IP. Yes, I know it's doable, but I don't like doing it.
So, how can I change the statically assigned DNS on 600 servers without having to log into each one and do it manually?
Powershell? Script from Hades? 600 Kelly temps (one per server)?