Join CentOS 7 into Active Directory using realm and sssd
Introduction to SSSD and Realmd Staring from Red Hat 7 and CentOS 7, SSSD or 'System Security Services Daemon' and realm have been introduced. SSSD's main function is to access a remote identity and authentication resource through a common framework that provides caching and offline support to the system. SSSD provides PAM ans NSS integration and a database to store local users, as well as core and extended user data retrieved from a center server. The main reason to transition from winbind to sssd is that sssd can be used for both direct and indirect integration and allows to switch from one integration approach to another without significant migration costs. The most convenient way to configure SSSD or winbind in order to directly integrate a Linux system with AD is use the realm service. Because it allows callers to configure network authentication and domain membership in a standard way. The realm service automatically discovers information about accessib