Course Code: 1242

Enterprise Linux System Administration

Class Dates:
3/24/2025
5/19/2025
Length:
5 Days
Cost:
$2795.00
Class Time:
Technology:
Desktop
Delivery:
Instructor-Led Training, Virtual Instructor-Led Training

Overview

  • Course Overview
  • This comprehensive course is designed to equip learners with a profound understanding of Linux system administration. The course kicks off with foundational concepts such as the Linux Kernel, device management, and the intricacies of systemd, setting the stage for deeper exploration into system boot processes, including GRUB2 and systemd boot. Each section progresses through detailed topics, including hardware discovery, kernel module configuration, and systemd service management, ensuring participants build a robust foundation in managing and configuring the core aspects of a Linux system. The course also addresses the dynamic nature of networking and system maintenance, with chapters dedicated to basic and advanced networking concepts, log file administration, and the pivotal aspects of monitoring and troubleshooting.

    Supported Distributions: Red Hat Enterprise Linux 9
  • Audience
  • System Administrators: Individuals looking to start a career in system administration and seeking a solid foundation in Linux, one of the most popular and widely-used operating systems in server environments.
    IT Professionals: Those already working in IT fields such as network administration, support, or database management who want to expand their skill set to include Linux system administration to enhance their career prospects and job performance.
    Developers: Software developers who wish to gain a deeper understanding of the Linux environment, which can help in optimizing applications, managing development environments, or working more effectively with DevOps practices.
    DevOps Engineers: Professionals in the DevOps space who require a thorough understanding of Linux systems to improve collaboration between development and operations, automate processes, and ensure the reliability and scalability of services.
    Technology Enthusiasts, Cybersecurity Professionals.

Prerequisites

  • Students should already be comfortable working in a Linux or Unix environment. Fundamentals such as the Linux filesystem, process management, and how to edit files will not be covered in class. An understanding of network concepts, and the TCP/IP protocol suite is helpful. These skills are taught in the Linux Fundamentals course.

  • Recommended Courses:

  • Linux Fundamentals

Course Disclaimer

*Course Cost listed does not include the cost of courseware or exam. Course is subject to a minimum enrollment to run. Course may run virtually as a Virtual Instructor-Led (VILT) class if the minimum enrollment is not met. If the course is under the minimum enrollment the course may run as 4 day class (Bootcamp Style).

Course Details

  • Module 1: Linux Kernel & Devices
  • Hardware Discovery Tools, Configuring New Hardware with hwinfo
  • Kernel Hardware Info – /sys/
  • /sys/ Structure, udev, Managing Linux Device Files, List Block Devices
  • SCSI Devices, USB Devices, USB Architecture, Kernel Modules
  • Configuring Kernel Components and Modules
  • Handling Module Dependencies, Configuring the Kernel via /proc/
  • Console, Virtual Terminals, Keyboard & locale configuration
  • Serial Ports, Random Numbers and /dev/random
  • LAB TASKS, Adjusting Kernel Options
  • Linux Kernel Driver Compilation
  • Introduction to Troubleshooting Labs
  • Troubleshooting Practice: Kernel Modules
  • Module 2: Sysemd Overview
  • System Boot Method Overview
  • systemd System and Service Manager
  • systemd Targets
  • Using systemd
  • Linux Runlevels Aliases
  • Legacy Support for SysV init
  • LAB TASKS
  • Managing Services With Systemd's systemctl
  • Creating a systemd unit file
  • Module 3: Brub2/Systemd Boot Process
  • Booting Linux on PCs
  • GRUB 2, Grub 2Configuration & GRUB 2 Security
  • Boot Parameters, Initial RAM Filesystem, init
  • Systemd local-fs.target and sysinit.target
  • Systemd basic.target and multi-user.target
  • Legacy local bootup script support
  • System Configuration Files, RHEL7 Configuration Utilities
  • SLES12 Configuration Utilities, Shutdown and Reboot
  • LAB TASKS, Boot Process, Booting directly to a bash shell,
  • GRUB Command Line, Basic GRUB Security
  • Troubleshooting Practice: Boot Process
  • Module 4: Software Maintenance
  • Managing Software, RPM Features
  • RPM Architecture & RPM Packaging Files
  • Querying and Verifying with RPM
  • Updating the Kernel RPM
  • Dealing With RPM & Yum Digest Changes
  • Yum Plugins & RHN Subscription Manager
  • YUM Repository & YUM Repository Groups
  • Compiling/Installing from Source
  • Manually Installed Shared Libraries
  • Rebuilding Source RPM Packages
  • LAB TASKS, Managing Software with RPM, Creating a Custom RPM Repository
  • Querying the RPM Database, Installing Software via RPM & Source and Rebuilding SRPMs, Troubleshooting Practice: Package Management
  • Mdoule 5: Local Storage Administration
  • Partitioning Disks with fdisk & gdisk
  • Resizing a GPT Partition with gdisk
  • Partitioning Disks with parted, Non-Interactive Disk Partitioning with sfdisk
  • Filesystem Creation, Persistent Block Devices
  • Mounting, Resizing, and Manenance of Filesystems
  • Managing an XFS Filesystem, Swap, Filesystem Structures
  • Determining Disk Usage With df and du
  • Configuring Disk Quotas, Setting, Viewing, & Monitoring Qutas
  • Filesystem Attributes
  • LAB TASKS, Creating and Managing Filesystems,
  • Hot Adding Swap, Setting User Quotas
  • Module 6: LVM & RAID
  • Logical Volume Management, Creating, Implimenting, & Activating LVM & VGs
  • Exporting & Importing a VG, Examining & Changing LVM Components
  • Advanced LVM: Components & Object Tags
  • Advanced LVM: Components, Object Tags, & Automated Storage Tiering
  • Advanced LVM: Thin Provisioning, Striping, & Mirroring
  • SLES Graphical Disk Tool, RAID Concepts
  • Array Creation with mdadm
  • Software RAID Monitoring, Control, and Display
  • LAB TASKS, Creating and Managing LVM Volumes
  • Creating LVM Thin Volumes, Troubleshooting Practice: LVM
  • Creating and Managing a RAID-5 Array
  • Module 7: Remote Storage Administration
  • Remote Filesystem Protocols, Remote Block Device Protocols
  • File Sharing via NFS, NFSv4+ & Clients
  • NFS Server Configuration & YaST Administration
  • AutoFS Configuration, Accessing Windows/Samba Shares from Linux
  • SAN Multipathing & Configuration Best Practices
  • iSCSI Architecture, Open-iSCSI Initiator Implementation
  • iSCSI Initiator Discovery & Node Administration
  • Mounting iSCSI Targets at Boot
  • iSCSI Multipathing Considerations
  • LAB TASKS, Using autofs, NFS Server Configuration
  • iSCSI Initiator Configuration, Multipathing with iSCSI
  • Module 8: User/Group Administration
  • Approaches to Storing User Accounts
  • User and Group Concepts, User Administration
  • Modifying Accounts, Group Administration
  • Password Aging, Default User Files
  • Controlling Login Sessions
  • RHEL DS Client Configuration
  • SLES DS Client Configuration
  • System Security Services Daemon (SSSD)
  • LAB TASKS, User and Group Administration
  • Using LDAP for Centralized User Accounts
  • Troubleshooting Practice: Account Management
  • Module 9: Pluggable Authentication Modules )PAM)
  • PAM Overview
  • PAM Module Types
  • PAM Order of Processing
  • PAM Control Statements
  • PAM Modules
  • pam_unix
  • pam_nologin.so, pam_limits.so
  • pam_wheel.so, pam_xauth.so
  • LAB TASKS, Restricting superuser access to wheel group membership
  • Using pam_nologin to Restrict Logins
  • Setting Limits with the pam_limits Modules
  • Using pam_limits to Restrict Simultaneous Logins
  • Module 10: Security Administration
  • Security Concepts & Advisory with SuSE Security Checker
  • Fine Grained Authorizations with Polkit
  • File Access Control Lists
  • Manipulating, Viewing, & Backing Up FACLs
  • File Creation Permissions with umask
  • User Private Group Scheme & Alternatives
  • AppArmor, SELinux Security Ramework, Modes, Commands, and Booleans
  • Permissive Domains, SELinux Policy Tools
  • SUSE Basic Firewall Configuration, FirewallD
  • LAB TASKS, User Private Groups, Using Filesystem ACLs
  • Exploring AppArmor, Exploring SELinux Modes,
  • SELinux File Contexts, SELinux Contexts in Action
  • Module 11: Basic Networking
  • IPv4 & TCP/UDP Fundamentals, Linux Network Interfaces - Starting & Stopping
  • Ethernet Hardware Tools, Network Configuration with ip Command
  • NetworkManager, DNS & DHCP Clients
  • SUSE YaST Network Configuration Tool
  • Information from ss and netstat, Hardware and System Clock
  • Managing Network-Wide Time
  • Continual Time Sync with NTP
  • Configuring NTP Clients & Useful Commands
  • LAB TASKS, Network Discovery
  • Basic Client Networking, NTP Client Configuration
  • Module 12: Advanced Networking
  • Multiple IP Addresses
  • Configuring a DHCP server
  • IPv6, Interface Aggregation
  • Interface Bonding, Network Teaming
  • Interface Bridging
  • 802.1q VLANS
  • Tuning Kernel Network Settings
  • LAB TASKS, Multiple IP Addresses Per Network Interface
  • Configuring IPv6
  • Troubleshooting Practice: Networking
  • Module 13: Log File Administration
  • System Logging
  • systemd Journal
  • systemd Journal's journactl
  • Secure Logging with Journal's Log Sealing
  • gnome-system-log
  • Rsyslog
  • /etc/rsyslog.conf
  • Log Management
  • Log Anomaly Detector
  • Sending logs from the shell
  • LAB TASKS, Using the systemd Journal, Setting up a Full Debug Logfile
  • Remote Syslog Configuration, Remote Rsyslog TLS Configuration
  • Module 14: Monitoring & Troubleshooting
  • System Status Memory, I/O, CPU
  • Performance Trending with sar
  • Determining Service to Process Mapping
  • Realtime Monitoring of Resources Cgroups
  • Troubleshooting Basics: The Process & Tools
  • strace and ltrace, Common Problems
  • Troubleshooting Incorrect File Permissions
  • Inability to Boot, Typos in Configuration Files
  • Corrupt Filesystems
  • RHEL7 & SUSE Rescue Environment
  • LAB TASKS, System Activity Reporter
  • Cgroup for Processes,Recovering Damaged MBR
  • PRE-INSTALLATION CONSIDERATIONS
  • Pre-Installation Considerations
  • Hardware Compatibility
  • Multi-OS Booting
  • Partition Considerations
  • Filesystem Planning
  • Selecting a Filesystem
  • INSTALLING RHEL7
  • Anaconda: An Overview
  • Anaconda: Booting the System
  • Anaconda: Common Boot Options
  • Anaconda: Loading Anaconda and Packages
  • Anaconda: Storage Options
  • Anaconda: Troubleshooting
  • FirstBoot, Kickstart,
  • Network Booting with PXE
  • A Typical Install
  • LAB TASKS, Linux Installation
  • Automating Installation with Kickstart
  • INSTALLING SLES12
  • YaST Install Program Interface, Network Installation
  • SLP for SUSE Linux Installation
  • Installation Choices
  • Kernel Crash Dump Configuration
  • Network Booting with PXE, Creating AutoYaST2 Files
  • Using AutoYaST2 files, linuxrc Automation
  • Installation Diagnostics
  • After The First Reboot
  • A Typical Install
  • LAB TASKS, SUSE Linux Enterprise Server Installation
  • Automating Installation with AutoYaST
  • MANAGE VIRTUAL MACHINES
  • Virtualization: What and Why?
  • Introducing libvirt, libvirt: Basic Concepts
  • libvirt: Storage Architecture, libvirt: Network Architecture
  • libvirt: Graphical Tools, libvirt: Command Line Tools
  • virsh: Basics, virsh: Common Tasks
  • virt-install, Virtual Machine Guest Tools & Drivers
  • libguestfs and guestfish
  • LAB TASKS, Installing a Virtual Machine
  • BACKUPS
  • Backup Software
  • Managing Optical Media
  • Tape Libraries
  • Backup Examples
  • LAB TASKS, Using rsync and ssh for Backups,
  • Using tar for Backups
  • Using cpio for Backups
  • Creating ISO Images for Backups
  • Using dump and restore for Backups