GL124 - Red Hat Enterprise Linux Systems Admin I

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This Red Hat Enterprise Linux System Administration I course is designed to equip IT professionals with the foundational skills required to effectively manage and operate Red Hat Enterprise Linux environments. This comprehensive course provides an in-depth understanding of essential system administration tasks, ranging from managing files and directories to controlling access with Linux file system permissions. Whether you're new to Linux or looking to solidify your skills, this course offers a robust curriculum that lays the groundwork for advanced system management.

Participants in this course will gain practical, hands-on experience through a series of lab tasks that reinforce theoretical knowledge. The curriculum covers key topics such as managing local Linux users and groups, controlling services and daemons with systemd, and configuring secure SSH services. By the end of the course, students will be proficient in using both command-line tools and graphical interfaces to administer Red Hat Enterprise Linux systems, ensuring they are well-prepared to handle real-world scenarios in enterprise environments.

This course not only prepares individuals for professional certification but also enhances their ability to contribute effectively to their organization's IT infrastructure. With a focus on real-world application and troubleshooting, this course is an invaluable resource for IT professionals seeking to enhance their Linux administration skills and ensure the smooth operation of mission-critical systems.

The Red Hat Enterprise Linux (RHEL) system administration topics covered in this course along with the GL134 course cover the certification objects of the Red Hat Certified System Administrator (RHCSA) exam.

Benefits:

  1. Hands-On Learning: Gain practical experience with real-world tasks through interactive lab exercises.
  2. Foundational Skills: Master essential Red Hat Linux system administration tasks, from file management to user permissions.
  3. Certification Preparation: Get ready for professional certification with a curriculum aligned to industry standards.
  4. Enhanced Troubleshooting: Develop the ability to diagnose and resolve issues in enterprise Linux environments.
  5. Career Advancement: Strengthen your resume and expand your career opportunities in IT system administration.

Audience:

  1. System Administrators: Responsible for managing and maintaining Linux-based servers and systems.
  2. IT Support Technicians: Provide technical support and troubleshooting for Linux environments.
  3. DevOps Engineers: Integrate and automate Linux system management into continuous deployment workflows.
  4. Network Administrators: Manage and secure Linux-based network services and infrastructure.
  5. IT Managers: Oversee teams that deploy, manage, and maintain Linux systems within an organization.

Current Version: R9-D00

Red Hat® is a registered trademark of Red Hat, Inc. and its use by Guru Labs, L.C. does not imply association or sponsorship by Red Hat, Inc.

Prerequisites:

Students must be proficient in general computing skills but not necessarily experienced with Linux or Unix.

Supported Distributions:
Red Hat Enterprise Linux 9
Recommended Class Length:
5 days
Detailed Course Outline:
  1. Access the command line
    1. Components of a Distribution
    2. Red Hat Linux Products
    3. Logging In
    4. Running Programs
    5. Interacting with Command Line
    6. Desktop Environments
    7. GNOME
    8. got root?
    9. Switching User Contexts
    10. sudo
    Lab Tasks
    1. Login and Discovery
    2. Switching Users With su
  2. Manage files from the command line
    1. Physical Unix File Structure
    2. Unix/Linux Filesystem Features
    3. Navigating the Filesystem
    4. Displaying Directory Contents
    5. Directory Manipulation
    6. File Manipulation
    7. Deleting and Creating Files
    8. Filesystem Links
    9. Filename Matching
    10. File Globbing and Wildcard Patterns
    11. Brace Expansion
    12. Shell and Environment Variables
    13. Key Environment Variables
    Lab Tasks
    1. Navigating Directories and Listing Files
    2. Manipulating Files and Directories
    3. Wildcard File Matching
    4. Shell Variables
  3. Get help in a textual environment
    1. Gathering Login Session Info
    2. Red Hat Online Documentation
    3. Getting Help Within the Graphical Desktop
    4. Gathering System Info
    5. Help from Commands and Documentation
    6. Getting Help with man & info
    7. $MANPATH, whatis and apropos
    Lab Tasks
    1. Help with Commands
  4. Create, view, and edit text files
    1. vi and Vim
    2. Learning Vim
    3. Basic vi
    4. Intermediate vi
    5. Communication Channels
    6. File Redirection
    7. Piping Commands Together
    8. Searching Inside Files
    9. The Streaming Editor
    10. Text Processing with Awk
    11. Producing File Statistics
    12. Replacing Text Characters
    13. Text Sorting
    14. Duplicate Removal Utility
    15. Extracting Columns of Text
    16. Combining Files and Merging Text
    17. Comparing File Changes
    Lab Tasks
    1. Text Editing with Vim
    2. Text Processing
  5. Manage local Linux users and groups
    1. User and Group Concepts
    2. User Administration
    3. Modifying Accounts
    4. Group Administration
    5. User Private Group Scheme
    6. Password Aging
    Lab Tasks
    1. User and Group Administration
    2. User Private Groups
  6. Control access to files with Linux file system permissions
    1. File Ownership
    2. File and Directory Permissions
    3. Changing File Permissions
    4. File Creation Permissions with umask
    5. SUID and SGID on files
    6. SGID and Sticky Bit on Directories
    Lab Tasks
    1. File and Directory Ownership and Permissions
  7. Monitor and manage Linux processes
    1. What is a Process?
    2. Process States
    3. Viewing Processes
    4. System Status – CPU
    5. System Status – Memory
    6. Signals
    7. Tools to Send Signals
    8. Job Control Overview
    9. Job Control Commands
    Lab Tasks
    1. Job Control Basics
    2. Process Management Basics
  8. Control services and daemons
    1. systemd System and Service Manager
    2. Using systemd
    3. Modifying systemd services
    Lab Tasks
    1. Managing Services With Systemd's systemctl
    2. Creating a systemd unit file
  9. Configure and secure OpenSSH service
    1. Secure Shell
    2. OpenSSH Client & Server Configuration
    3. Accessing Remote Shells
    4. Transferring Files
    5. Alternative sftp Clients
    6. SSH Key Management
    7. ssh-agent
    Lab Tasks
    1. Introduction to ssh and secure file transfer
    2. SSH Key-based User Authentication
    3. Using ssh-agent
  10. Analyzing and Storing Logs
    1. System Logging
    2. systemd Journal
    3. systemd Journal's journalctl
    4. Secure Logging with Journal's Log Sealing
    5. Cockpit - Logs
    6. Rsyslog
    7. /etc/rsyslog.conf
    8. Log Management
    9. Log Anomaly Detector
    Lab Tasks
    1. Using the systemd Journal
    2. Setting up a Full Debug Logfile
    3. Remote Syslog Configuration
    4. Remote Rsyslog TLS Configuration
  11. Manage Red Hat Enterprise Linux networking
    1. IPv4 Fundamentals
    2. TCP/UDP Fundamentals
    3. IPv6
    4. Linux Network Interfaces
    5. Ethernet Hardware Tools
    6. Network Configuration with ip Command
    7. Starting and Stopping Interfaces
    8. Configuring Routing Tables
    9. IP to MAC Address Mapping with ARP
    10. DNS Clients
    11. DHCP Clients
    12. Hardware and System Clock
    13. Continual Time Sync with NTP
    14. Time Synchronization with Chronyd
    15. Network Diagnostics
    16. NetworkManager
    Lab Tasks
    1. Network Discovery
    2. Using nmcli
    3. Chrony Client Configuration
    4. Introduction to Troubleshooting Labs
    5. Troubleshooting Practice: Networking
  12. Archive and copy files between systems
    1. Archives with tar
    2. Archives with cpio
    3. The gzip Compression Utility
    4. The bzip2 Compression Utility
    5. The XZ Compression Utility
    6. The PKZIP Archiving/Compression format
    Lab Tasks
    1. Archiving and Compression
    2. Using rsync and ssh for Backups
  13. Install and update software packages
    1. Managing Software
    2. RPM Features
    3. RPM Architecture
    4. RPM Package Files
    5. Working With RPMs
    6. Querying and Verifying with RPM
    7. Managing Software Dependencies
    8. Using the Yum & DNF commands
    9. Yum package groups
    10. Configuring Yum
    11. Updating the Kernel RPM
    12. DNF Repositories
    13. DNF Repository Groups
    14. DNF Plugins & RHSM Subscription Manager
    15. DNF Version Lock Plugin
    Lab Tasks
    1. Managing Software with RPM
    2. Querying the RPM Database
    3. Using DNF
  14. Access Linux file systems
    1. Filesystem Creation
    2. Mounting Filesystems
    3. Mounting Filesystems
    4. Filesystem Maintenance
    5. Managing an XFS Filesystem
    6. Persistent Block Devices
    7. Filesystem Structures
    8. Determining Disk Usage With df and du
    9. Filesystem Table (/etc/fstab)
    Lab Tasks
    1. Creating and Managing Filesystems
  15. Comprehensive review
    1. System Administration I
    Lab Tasks
    1. Understand And Use Essential Tools
    2. Operate Running Systems
    3. Users, Groups, and File Permissions