Active directory on MacOS

Solution 1:

Open System Preferences → Users & Groups.

Click Login Options.

Click the Join button after Network Account Server

Bind your Mac to the directory. (You may have to click the lock to unlock System Preferences first.

The AD will then show up in the search paths in directory utility, and be available for selection in nodes.

Solution 2:

Secondarily, if you are intending to switch away from using AD (your OP was not clear on this) you can run Open Directory, which is a direct equivalent in many ways.

In some multi-platform environments, Open Directory is in use in concert with Active Directory, where the OD is populated from the AD: I can tell you from previous experience this configuration can work, though it requires you to develop some knowledge and skill with OD as well as your existing AD knowledge.

Here are some article with relevant details which may help:

https://en.wikipedia.org/wiki/Apple_Open_Directory

http://krypted.com/mac-os-x/setup-open-directory-master-macos-server-5-4-high-sierra-10-13/

https://www.jamf.com/jamf-nation/discussions/25499/macos-high-sierra-10-13-issues-with-ad-and-password-changes

http://krypted.com/mac-os-x-server/manage-users-macos-server-5-4-high-sierra/

hope that helps.