Kerberos: The Definitive Guide: The Definitive Guide
Active Directory: Designing, Deploying, and Running Active Directory
DNS and BIND: Help for System Administrators
Mastering OpenLDAP: Configuring, Securing and Integrating Directory Services
Active Directory Cookbook: Solutions for Administrators & Developers (Cookbooks (O'Reilly))
How Linux Works, 2nd Edition: What Every Superuser Should Know
Docker: Up & Running: Shipping Reliable Containers in Production
Using Samba: A File & Print Server for Linux, Unix & Mac OS X
Site Reliability Engineering: How Google Runs Production Systems
Getting Started with OAuth 2.0: Programming Clients for Secure Web API Authorization and Authentication