I have to begin this post with the normal caveat that this is only the developers preview build that I'm testing with and things may change.
When I promoted my Windows Server 8 to become a domain controller I also installed DNS. As most people know AD has to have DNS in order to work. Most places use Microsoft DNS but you can also use BIND and others but I decided to stick with Microsoft.
After the DC was installed and rebooted I was able to access all the normal AD management consoles such as AD Users & Computers, Sites and Services, Domains and Trusts, AD Administrative Center and others.
I went to look at DNS and could not load the DNS management console.
I verified that the DNS feature had been installed.
I tried to add the DNS console via the MMC snap-in but it was missing.
I tried to run the dnsmgmt.msc command and again no luck
This could not be right and I had to be missing something. I decided to go look into the roles and features. Once again I verified that DNS was installed
I went into the features and looked at the Remote Server Administration Tools(RSAT) settings. I noticed that the DNS Server Tools were not checked/installed.
I checked the box to install the tools and just had to verify and install. This feature did not require a server reboot.
I once again tried to add the DNS tools via the MMC snap-in and this time voila it was there
I verified that dnsmgmt.msc would also work from the command line.
As you can see below the DNS management tools are now accessible and this is what it looks like in Windows Server 8 Developers Preview.