[Samba] demote ad dc

[Andrea Ballarati]

Hello,
in my lan I have an ad dc samba and a file server that is ad dc too 
(Version 4.11.6-Ubuntu).
I know this configuration is not recommended and I want to demote the ad 
dc file server to a simple domain member.
What is the correct procedure to follow? I have googled a bit but 
coudn't find any suitable instructions.

Thank you in advance

-- 
Andrea Ballarati