RHCSA-Red Hat Certified System Administrator

This course, designed for students who have completed RH124, goes deeper into enterprise Linux administration, including file systems and partitioning, logical volumes, SELinux, firewalling, and troubleshooting. The course goes deeper into core Linux system administration skills in storage configuration and management, installation and deployment of Red Hat® Enterprise Linux®, management of security features such as SELinux, control of recurring system tasks, management of the boot process and troubleshooting, basic system tuning, and command-line automation and productivity. .

·       Run commands more efficiently by using advanced features of the Bash shell, shell scripts, and various utilities provided by Red Hat Enterprise Linux.

·       Schedule commands to run in the future, either one time or on a repeating schedule.

·       Improve system performance by setting tuning parameters and adjusting scheduling priority of processes.

·       Interpret and set access control lists (ACLs) on files to handle situations requiring complex user and group access permissions.

·       Protect and manage the security of a server by using SELinux.

·       Create and manage storage devices, partitions, file systems, and swap spaces from the command line.

·       Create and manage logical volumes containing file systems and swap spaces from the command line.

·       Manage storage using the Stratis local storage management system and use VDO volumes to optimize storage space in use.

·       Use the NFS protocol to administer network-attached storage.

·       Manage the boot process to control services offered and to troubleshoot and repair problems.

·       Control network connections to services using the system firewall and SELinux rules.

·       Install Red Hat Enterprise Linux on servers and virtual machines.

·       Obtain, run, and manage simple, lightweight services as containers on a single Red Hat Enterprise Linux server.

RHCSA exam candidates should be able to accomplish the tasks below without assistance. These have been grouped into several categories.

·         Understand and use essential tools

·         Access a shell prompt and issue commands with correct syntax

·         Use input-output redirection (>, >>, |, 2>, etc.)

·         Use grep and regular expressions to analyze text

·         Access remote systems using SSH

·         Log in and switch users in multiuser targets

·         Archive, compress, unpack, and uncompress files using tar,

       star, gzip, and bzip2

·         Create and edit text files

·         Create, delete, copy, and move files and directories

·         Create hard and soft links

·         List, set, and change standard ugo/rwx permissions

·         Locate, read, and use system documentation including man,

       info, and files in /usr/share/doc

·         Create simple shell scripts

·         Conditionally execute code (use of: if, test, [], etc.)

·         Use Looping constructs (for, etc.) to process file,

       command line input

·         Process script inputs ($1, $2, etc.)

·         Processing output of shell commands within a script

·         Processing shell command exit codes

·         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

·         Manage tuning profiles

·         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

·         List, create, delete partitions on MBR and GPT disks

·         Create and remove physical volumes

·         Assign physical volumes to volume groups

·         Create and delete logical volumes

·         Configure systems to mount file systems at boot by

       universally unique ID (UUID) or label

·         Add new partitions and logical volumes, and swap to a

       system non-destructively

·         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

·         Create and use file access control lists

·         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

·         Manage containers

·         Find and retrieve container images from a remote registry

·         Inspect container images

·         Perform container management using commands such as

       podman and skopeo

·         Perform basic container management such as running, starting,

       stopping, and listing running containers

·         Run a service inside a container

·         Configure a container to start automatically as a systemd service

·         Attach persistent storage to a container