The control of users and groups is a core element of Red Hat Enterprise Linux system administration. This chapter explains how to add, manage, and delete users and groups in the graphical user interface and on the command line, and covers advanced topics, such as creating group directories.

Containers are technologies that allow the packaging and isolation of applications with their entire runtime environment—all of the files necessary to run. This makes it easy to move the contained application between environments (dev, test, production, etc.) while retaining full functionality. Containers are also an important part of IT security. By building security into the container pipeline and defending infrastructure, containers stay reliable, scalable, and trusted. You can also easily move the containerized application between public, private and hybrid cloud environments and data centers (or on-premises) with consistent behavior and functionality.

Modern application development teams must use multiple cloud databases to access various features and capabilities. As database usage continues to increase, it is difficult using and manage this multitude of databases. Red Hat commissioned Forrester Consulting found that simplified managed database access solutions help decision-makers maximize the impact, mitigate the complexity of their database-as-a-service (DBaaS) solutions, and manage their diverse landscape of databases.