Red Hat Enterprise Linux System Admin II (GL134)

Course Duration

4 Days

Audience

Employees of federal, state and local governments; and businesses working with the government.

Prerequisites

Completion of GL120 (Linux Fundamentals) or equivalent experience with basic Linux command-line usage, file management, user administration, and text editing. Familiarity with the RHEL environment is recommended.

Course Description

Build on your Linux fundamentals to master the intermediate systems administration skills required for managing Red Hat Enterprise Linux 10 in production. Across fifteen focused chapters, this course develops core competency in shell scripting, security, storage, networking, and containerization, with direct alignment to RHCSA exam objectives. Topics span the full breadth of day-to-day RHEL administration, from writing Bash scripts and configuring SELinux and LVM storage to troubleshooting the boot process, building nftables and firewalld firewalls, and deploying containers with Podman. Like all Guru Labs courses, the material is designed to provide extensive hands-on experience, with 28 labs on live RHEL 10 systems reinforcing every topic.

Learning Objectives

• Write and debug Bash shell scripts using variables, conditionals, loops, and exit status handling.
• Construct regular expressions and apply them with grep to search and filter text across BRE, ERE, and PCRE.
• Schedule recurring and one-time tasks using cron, at, anacron, and systemd timers.
• Manage process priorities with nice, renice, and ionice, and monitor system activity with ps and top.
• Configure POSIX access control lists and SELinux contexts, booleans, and policies to secure files and services.
• Configure LDAP-based network authentication using authselect, SSSD, and directory services.
• Partition disks, create ext4 and XFS filesystems, and manage LVM volumes including snapshots and thin provisioning.
• Mount NFS shares and configure autofs for on-demand network storage access.
• Troubleshoot the RHEL boot process including GRUB2 configuration, systemd targets, and root password recovery.
• Configure packet filtering with nftables and manage firewalld zones, services, and rich rules.
• Deploy and manage containers using Podman, build images with Containerfiles, and run rootless containerized services.
• Install RHEL systems using Anaconda and automate deployments with Kickstart.

Course Outline

• Introduction to Shell Scripting
• Use regular expressions with grep
• Schedule future Linux tasks
• Manage priority of Linux processes
• Control access to files with access control lists (ACL)
• Manage SELinux security
• Connect to network-defined users and groups
• Add disks, partitions, and file systems to a Linux system
• Manage logical volume management (LVM) storage
• Access and manage network attached storage
• Control and troubleshoot the Red Hat Enterprise Linux boot process
• Linux network communication with firewall
• Container Technology Overview
• Installing RHEL
• Comprehensive review

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