ALTTEXT
UNDER CONSTRUCTION
RHCSA is a must have certification for anyone serious about getting a Linux system administration job. This RHCSA Exam Preparation Guide is currently under construction but is regularly updated with new topics. Please check back later.

If you are a beginner or somewhat new to GNU/Linux do not waste time by waiting but get started with a GNU/Linux command line basics before you do anything else. Understanding the GNU/Linux command line is an absolute must and will take you a long way on your RHCSA exam.

Understand and use essential tools

Operate running systems

  • Boot, reboot, and shut down a system normally
  • Boot systems into different targets manually
  • Interrupt the boot process in order to gain access to a system
  • Identify CPU/memory intensive processes and kill processes
  • Adjust process scheduling
  • Locate and interpret system log files and journals
  • Preserve system journals
  • Start, stop, and check the status of network services
  • Securely transfer files between systems

Configure local storage

Create and configure file systems

  • Create, mount, unmount, and use vfat, ext4, and xfs file systems
  • Mount and unmount network file systems using NFS
  • Extend existing logical volumes
  • Create and configure set-GID directories for collaboration
  • Configure disk compression
  • Manage layered storage
  • Diagnose and correct file permission problems

Deploy, configure, and maintain systems

  • Schedule tasks using at and cron
  • Start and stop services and configure services to start automatically at boot
  • Configure systems to boot into a specific target automatically
  • Configure time service clients
  • Install and update software packages from Red Hat Network, a remote repository, or from the local file system
  • Work with package module streams
  • Modify the system bootloader

Manage basic networking

  • Configure IPv4 and IPv6 addresses
  • Configure hostname resolution
  • Configure network services to start automatically at boot
  • Restrict network access using firewall-cmd/firewall

Manage users and groups

  • Create, delete, and modify local user accounts
  • Change passwords and adjust password aging for local user accounts
  • Create, delete, and modify local groups and group memberships
  • Configure superuser access

Manage security

  • Configure firewall settings using firewall-cmd/firewalld
  • Configure key-based authentication for SSH
  • Set enforcing and permissive modes for SELinux
  • List and identify SELinux file and process context
  • Restore default file contexts
  • Use boolean settings to modify system SELinux settings
  • Diagnose and address routine SELinux policy violations
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