GL134 - Red Hat Enterprise Linux Systems Admin II

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This GL134 course is designed to follow an identical set of topics as the Red Hat® RH134 course with the added benefit of very comprehensive lab exercises and detailed lecture material.

The Red Hat Enterprise Linux (RHEL) system administration topics covered in this course along with the GL124 course cover the certification objects of the Red Hat Certified System Administrator (RHCSA) exam.

The topics covered include automating installation with Kickstart, intermediate and advanced level command line building blocks and tools, troubleshooting, network file sharing server configuration, connecting to a directory service, managing advanced security settings, maintenance tasks, and kernel tuning.

Current Version: R9-B00

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Completion of or skills equal to the GL124 "Linux Systems Administration I" course.

Supported Distributions:
Red Hat Enterprise Linux 9
Recommended Class Length:
5 days
Detailed Course Outline:
  1. Introduction to Shell Scripting
    1. Shell Script Strengths and Weaknesses
    2. Example Shell Script
    3. Positional Parameters
    4. Input & Output
    5. Doing Math
    6. Exit Status
    7. Comparisons with test
    8. Conditional Statements
    9. Flow Control: case
    10. The borne for-Loop
    11. The while and until Loops
    Lab Tasks
    1. Writing a Shell Script
  2. Use regular expressions with grep
    1. Searching Inside Files
    2. The Streaming Editor
    3. Regular Expression Overview
    4. Regular Expression Implementations
    5. Regular Expressions
    6. RE Character Classes
    7. Regex Quantifiers
    8. RE Parenthesis
    Lab Tasks
    1. Pattern Matching with Regular Expressions
    2. Extended Regular Expressions
    3. Using Regular Expressions With sed
  3. Create and edit text files with Vim
    1. Text Editing
    2. vi and Vim
    3. Learning Vim
    4. Basic vi
    5. Intermediate vi
    Lab Tasks
    1. Text Editing with Vim
  4. Schedule future Linux tasks
    1. Automating Tasks
    2. at/batch
    3. cron
    4. The crontab Command
    5. crontab Format
    6. /etc/cron.*/ Directories
    7. Anacron
    8. Systemd Timers
    Lab Tasks
    1. Creating and Managing User Cron Jobs
    2. Adding System cron Jobs
  5. Manage priority of Linux processes
    1. Viewing Processes
    2. Managing Processes
    3. Tuning Process Scheduling
    Lab Tasks
    1. Process Management Basics
  6. Control access to files with access control lists (ACL)
    1. File and Directory Permissions
    2. File Access Control Lists
    3. Manipulating FACLs
    4. Viewing FACLs
    5. Backing Up FACLs
    Lab Tasks
    1. Using Filesystem ACLs
  7. Manage SELinux security
    1. SELinux Security Framework
    2. SELinux Modes
    3. SELinux Commands
    4. Choosing an SELinux Policy
    5. SELinux Booleans
    6. Permissive Domains
    7. SELinux Policy Tools
    8. SELinux Troubleshooting
    9. SELinux Troubleshooting Continued
    Lab Tasks
    1. Exploring SELinux Modes
    2. SELinux File Contexts
  8. Connect to network-defined users and groups
    1. RHEL DS Client Configuration
    2. System Security Services Daemon (SSSD)
    Lab Tasks
    1. Using LDAP for Centralized User Accounts
  9. Add disks, partitions, and file systems to a Linux system
    1. Partitioning Disks with fdisk & gdisk
    2. Resizing a GPT Partition with gdisk
    3. Partitioning Disks with parted
    4. Non-Interactive Disk Partitioning with sfdisk
    5. Filesystem Creation
    6. Filesystem Maintenance
    7. Managing an XFS Filesystem
    8. Swap
    Lab Tasks
    1. Creating and Managing Filesystems
    2. Hot Adding Swap
  10. Manage logical volume management (LVM) storage
    1. Logical Volume Management
    2. Implementing LVM
    3. Creating Logical Volumes
    4. Activating LVM VGs
    5. Exporting and Importing a VG
    6. Examining LVM Components
    7. Changing LVM Components
    8. Advanced LVM Overview
    9. Advanced LVM: Components & Object Tags
    10. Advanced LVM: Automated Storage Tiering
    11. Advanced LVM: Thin Provisioning
    12. Advanced LVM: Striping & Mirroring
    13. Advanced LVM: RAID Volumes
    Lab Tasks
    1. Creating and Managing LVM Volumes
  11. Access networked attached storage with network file system (NFS)
    1. File Sharing via NFS
    2. NFSv4+
    3. NFS Clients
    4. NFS
    5. NFS Server Configuration
    Lab Tasks
    1. NFS Server Configuration
  12. Access networked attached storage with SMB
    1. Accessing Windows/Samba Shares from Linux
    2. AutoFS
    3. AutoFS Configuration
    Lab Tasks
    1. Using autofs
  13. Control and troubleshoot the Red Hat Enterprise Linux boot process
    1. System Boot Method Overview
    2. systemd System and Service Manager
    3. Modifying systemd services
    4. Systemd Service Sandboxing Features
    5. systemd Targets
    6. Using systemd
    7. Legacy Support for SysV init
    8. Booting Linux on PCs
    9. GRUB 2
    10. GRUB 2 Configuration
    11. The Boot Loader Specification
    12. GRUB 2 Security
    13. Boot Parameters
    14. Initial RAM Filesystem
    15. init
    16. Linux Runlevels Aliases
    17. Systemd and
    18. Systemd and
    19. Legacy local bootup script support
    20. System Configuration Files
    21. RHEL9 Configuration Utilities
    22. Shutdown and Reboot
    Lab Tasks
    1. Boot Process
    2. Booting directly to a bash shell
    3. GRUB Command Line
    4. Basic GRUB Security
    5. Managing Services With Systemd's systemctl
    6. Creating a systemd unit file
    7. Troubleshooting Practice: Boot Process
  14. Linux network communication with firewall
    1. Netfilter: Stateful Packet Filter Firewall
    2. Netfilter Concepts
    3. nftables
    4. NFT: Tables
    5. NFT: Chains
    6. NFT: Rules
    7. Netfilter Rule Syntax
    8. Rule Counters
    9. Targets
    10. FirewallD
    Lab Tasks
    1. Securing Services with Netfilter
    2. FirewallD
  15. Container Technology Overview
    1. Container Fundamentals
    2. Daemonless Containers
    3. Podman
    4. Podman Configuration
    5. Podman Images
    6. Podman Volumes
    7. Podman Networking
    8. Rootless Podman
    9. Podman and Pods
    10. Building Images with Buildah
    11. Managing Images with Skopeo
    Lab Tasks
    1. Podman
    2. Podman Networking
    3. Podman and Pods
  16. Comprehensive review
    1. System Administration II
    Lab Tasks
    1. Understand And Use Essential Tools
    2. Operate Running Systems
    3. Configure Local Storage and Filesystems
    4. Users, Groups, and File Permissions
    5. Maintenance and Recovery