Red Hat Linux Training

Linux System Administration

Learn about Linux from Instructors with Real World Expertise.

This 5 day course is an in-depth course that explores installation, configuration and maintenance of Linux systems.

Overview:

This is an in-depth course that explores installation, configuration and maintenance of Linux systems. The course focuses on issues universal to every workstation and server. Like all Guru Labs courses, the course material is designed to provide extensive hands-on experience. Topics include: installation and configuration; the boot process; user and group administration; filesystem administration, including quotas, FACLs, RAID and LVM; task automation; client networking; SELinux; software management; log files;
troubleshooting; and more.

Target Audience:

  • Architects
  • System Administrators
  • Developers

Structure: 50% theory 50% hands on lab exercises

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.

Duration: 5 days

Course Outline:

Linux Kernel & Devices

Overview:

  • 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 Configuration
  • Kernel Modules
  • Configuring Kernel Components and Modules
  • Handling Module Dependencies
  • Configuring the Kernel via /proc/
  • Console
  • Virtual Terminals
  • Serial Ports

Lab Tasks

  • Adjusting Kernel Options
  • Introduction to Troubleshooting Labs
  • Troubleshooting Practice: Kernel Modules

Boot Process and Sysv Init

Overview:

  • Systemd System and Service Manager
  • Systemd Targets
  • Using systemd
  • Legacy Support for SysV init
  • Booting Linux on PCs
  • GRUB 2
  • GRUB2 Configuration
  • GRUB2 Security
  • Boot Parameters
  • Initial RAM Filesystem
  • Init
  • System Init Styles Overview
  • Linux Runlevels Aliases
  • 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
  • GRUB Command Line
  • Basic GRUB Security
  • Managing Services With Systemd’s systemctl
  • Troubleshooting Practice: Boot Process

Software Maintenance

Overview:

  • Managing Software
  • RPM Features
  • RPM Architecture
  • RPM Package Files
  • Working With RPMs
  • Querying and Verifying with RPM
  • Updating the Kernel RPM
  • Dealing With RPM & YUM Digest Changes
  • Yum Plugins & RHN Subscription Manager
  • YUM Repositories
  • 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

Local Storage Administration

Overview:

  • Partitioning Disks with fdisk
  • Partitioning Disks with parted
  • Filesystem Creation
  • Persistent Block Devices
  • Mounting Filesystems
  • Resizing Filesystems
  • Filesystem Maintenance
  • Managing an XFS Filesystem
  • Swap
  • Filesystem Structures
  • Determining Disk Usage With df and du
  • Configuring Disk Quotas
  • Setting Quotas
  • Viewing and Monitoring Quotas
  • Filesystem Attributes

Lab Tasks:

  • Creating and Managing Filesystems
  • Hot Adding Swap
  • Setting User Quotas

LVM and RAID

Overview:

  • Logical Volume Management
  • Implementing LVM
  • Creating Logical Volumes
  • Manipulating VGs & LVs
  • Advanced LVM Concepts
  • Gnome-disk-utility
  • SLES Graphical Disk Tool
  • RAID Concepts
  • Array Creation with mdadm
  • Software RAID Monitoring
  • Software RAID Control and Display

Lab Tasks:

  • Creating and Managing LVM Volumes
  • Creating and Managing a RAID-5 Array

Remote Storage and Administration

Overview:

  • Remote Storage Overview
  • Remote Filesystem Protocols
  • Remote Block Device Protocols
  • File Sharing via NFS
  • NFSv4+
  • NFS Clients
  • NFS Server Configuration
  • YaST NFS Server Administration
  • Implementing NFSv4
  • AutoFS
  • AutoFS Configuration
  • Accessing Windows/Samba Shares from Linux
  • SAN Multipathing
  • Multipath Configuration
  • Multipathing Best Practices
  • iSCSI Architecture
  • Open-iSCSI Initiator Implementation
  • iSCSI Initiator Discovery
  • iSCSI Initiator Node Administration
  • Mounting iSCSI Targets at Boot
  • iSCSI Multipathing Considerations

Lab Tasks:

  • Using autofs
  • NFS Server Configuration
  • iSCSI Initiator Configuration
  • Multipathing with iSCSI

User/Group Administration

Overview:

  • User and Group Concepts
  • User Administration
  • Modifying Accounts
  • Group Administration
  • Password Ageing
  • Default User Files
  • Controlling Login Sessions
  • System-config-authentication
  • 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

Pluggable Authentication Modules (PAM)

Overview:

  • 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

Security Administration

Overview:

  • Security Concepts
  • Tightening Default Security
  • SuSE Security Checker
  • Security Advisories
  • File Access Control Lists
  • Manipulating FACLs
  • Viewing FACLs
  • Backing Up FACLs
  • File Creation Permissions with umask
  • User Private Group Scheme
  • Alternatives to UPG
  • AppArmor
  • SELinux Security Framework
  • SELinux Modes
  • SELinux Commands
  • Choosing an SELinux Policy
  • SELinux 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

Basic Networking

Overview:

  • IPv4 Fundamentals
  • TCP/UDP Fundamentals
  • Linux Network Interfaces
  • Ethernet Hardware Tools
  • Network Configuration with ip Command
  • Configuring Routing Tables
  • IP to MAC Address Mapping with ARP
  • Starting and Stopping Interfaces
  • NetworkManager
  • DNS Clients
  • DHCP Clients
  • SUSE YaST Network Configuration Tool
  • Network Diagnostics
  • Information from ss and netstat
  • Hardware and System Clock
  • Managing Network-Wide Time
  • Continual Time Sync with NTP
  • Configuring NTP Clients
  • Useful NTP Commands

Lab Tasks:

  • Network Discovery
  • Basic Client Networking
  • NTP Client Configuration

Advanced Networking

Overview:

  • Multiple IP Addresses
  • Configuring a DHCP server
  • IPv6
  • Interface Bonding
  • Interface Bridging
  • 802.1q VLANS
  • Tuning Kernel Network Settings

Lab Tasks:

  • Multiple IP Addresses Per Network Interface
  • Configuring IPv6
  • Troubleshooting Practice: Networking

Log FIle Administration

Overview:

  • System Logging
  • Systemd Journal
  • Gnome-system-log
  • Rsyslog
  • /etc/rsyslog.conf
  • Log Management
  • Log Anomaly Detector

Lab Tasks:

  • Using the systemd Journal
  • Setting up a Full Debug Logfile
  • Remote Syslog Configuration
  • Remote Rsyslog TLS Configuration

Monitoring and Troubleshooting

Overview:

  • System Status Memory
  • System Status I/O
  • System Status CPU
  • Performance Trending with sar
  • Determining Service to Process Mapping
  • Realtime Monitoring of Resources groups
  • Troubleshooting Basics: The Process 8 Troubleshooting Basics: The Tools
  • Strace and ltrace
  • Common Problems
  • Troubleshooting Incorrect File Permissions
  • Inability to Boot
  • Typos in Configuration Files
  • Corrupt Filesystems
  • RHEL7 Rescue Environment
  • SUSE Rescue Environment

Lab Tasks:

  • Recovering Damaged MBR
  • Cgroup for Processes

Pre-Installation Considerations

Overview:

  • Pre-Installation Considerations
  • Hardware Compatibility
  • Multi-OS Booting
  • Partition Considerations
  • Filesystem Planning
  • Selecting a Filesystem

Installing RHEL

Overview:

  • 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

Installilng SLES

Overview:

  • 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

Managing Virtual Machines

Overview:

  • 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
  • Libguestfs and guestfish

Lab Tasks:

  • Installing a Virtual Machine

Backups

Overview:

  • 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

Looking for something else? View all courses

Start Learning

Learn from Instructors with Real World Expertise