[Freeipa-users] Novice question re IPA management of host RBAC login, sudo and ssh key management for users who are only in Active Directory

[Chris Dagdigian]

Thanks to great tips and pointers from people on this list (h/t 
Alexander B) I was able to build an IPA master + replica setup that can 
recognize and allow logins from users coming from multiple disconnected 
AD Forests with 1-way trusts to the IPA servers

Sanitized view of our AWS footprint:

AD Servers & IPA:
------------------------
AD Forest #1:   company-test.org
AD Forest #2:   company-aws.org
AD Forest #3:   company.org
IPA Domain/Realm:    company-ipa.org   (successful 1-way trusts to 
company-test.org and company-aws.org etc.)

With basic recognition of users and working SSH logins based on AD 
username and passwords I'm moving on to trying to use the far more 
interesting IPA/IDM features.

Using user accounts defined locally on the IPA server I'm having a blast 
uploading SSH keys and creating sudo rules and groups. So the natural 
next question is "can we do this for users who exist only in remote AD 
controllers?

IPA is doing 100% of the UID/GID/Posix stuff management - we are only 
pulling usernames & groups from AD and checking passwords against the AD 
servers.

The basic question -- is it possible for me to get to "hybrid linux user 
management" nirvana whereby IPA/IDM manages everything about AD users 
except for their username and passwords?

Tried to find this in the official documentation but it dives instantly 
into deep topics about user data mapping, custom schemas and dealing 
with POSIX data served up by the AD controllers. Hard to figure out the 
boundary between what IPA can support with local user accounts vs  what 
it can do when the users exist in remote AD forests.

Any URLs or documentation pointers would be appreciated

Regards,
Chris