Welcome to the Centrify Express forums.
I moved the thread to the appropriate forum since Server Suite forums is for users of the commercial versions.
Please note that for us to be able to give you the help you need, we need to know 3 basic pieces of information:
a) Are you running Express or commercial? (Express)
b) What is the Operating System and version (e.g. Red Hat Enterprise Linux 7.2)
c) What is the version of Centrify you're running (you can run the "adinfo -v" command to see this). The current supported community version is 5.4.x
Please understand the following basic concepts.
a) Centrify Express for UNIX/Linux allows ALL add users to log in to the systems.
b) Installing the software alone does not do the job, you have to join Active Directory like you would a Windows system. This means that you have to provide the credentials of a user with the proper rights to do this.
c) Once you join succesfully, the client will be active and running; however, if you had any local users (e.g. /etc/passwd) that are named the same as AD users, you have to consolidate them. If you try to log in, you have to supply the AD password instead.
That being said, it seems you have succesfully installed the client, but you have NOT joined AD.
To join AD, you need to run the adjoin command (as root or with sudo) and supply the credentials of an AD user that is authorized to join systems in the target OU.
For example, if I want to join in express/workstation mode (-w) the domain called corp.contoso.com with the user (-u) called fred with verbose (-V) output, and I have privileges via sudo I would run:
$ sudo adjoin -w -u fred -V corp.contoso.com
This command will prompt you for your sudo password, and then for fred@CORP.CONTOSO.COM's password. Provided that Fred can join systems to the default Computers container, you'll be fine.
For more information about adjoin, please review the man page or the Cheat Sheet below.
If you are new to Centrify, here are a few resources:
Centrify Express Documentation: https://docs.centrify.com/en/css/suite2016/centrify-express-unix-agent-guide.pdf
Centrify commands cheat sheet: http://community.centrify.com/t5/TechBlog/TIPS-A-Centrify-Server-Suite-Cheat-Sheet/ba-p/22568
My personal blog: http://centrifying.blogspot.com/search/label/Start%20Here
R.P