Overview

This Red Hat 8 System Administration course is aimed at users and administrators who need to manage Enterprise Linux systems.

Audience

This course helps administrators new to Red Hat 8 or CentOS 8 quickly become skilled in the core tasks involved in managing Enterprise Linux solutions.

Prerequisites

No previous experience with a UNIX or Linux system is required, although delegates will benefit from attending our UNIX & Linux Essentials course.

Objectives

Linux is heavily relied upon in business, education and government. Due to its outstanding reliability, performance and low cost, Linux is being used extensively for file, database and web server applications. Of all the various Linux systems available, Red Hat Enterprise Linux has become the corporate Linux standard. This Red Hat 8 System Administration course is aimed at users and administrators who need to manage Enterprise Linux systems, not just Red Hat but also any of the rebuild projects like CentOS and Scientific Linux. The course will teach students basic Enterprise Linux administration techniques, including; command line access, process control and user and group management.

Topics

What is Red Hat Enterprise Linux
Linux and Open source Software
What is a Linux Distribution

Accessing the Command Line
Shell Basics
Logging into Linux Locally
Logging into Linux over the Network
Accessing the CLI from the GUI
Executing Commands at the Bash Shell
Editing the Command Line
Reading File Contents
Full Path or Relative Path
Bash History

Managing Linux Files
Understanding the Linux File System Hierarchy
Referencing Files by Name
Managing Files Using Command Line Tools
Creating Hard and Symbolic Links
Using Shell Expansion to Match Files Names
Brace Expansion
Tilde Expansion
Variable Expansion
Command Substitution

Getting Help In Linux
Simple Help Option
Linux Man Pages
Linux Info Pages

Managing Text Files
Shell Redirection
Redirecting to Files
Using the Tee Command
Redirecting Input
Creating Additional File Descriptors
Creating Text Files with Bash Here Documents
Editing Text Files with vim
The three modes of Vi
Editing Text Files with nano
Editing Text Files Programmatically with sed
Customizing the Shell Environment
Assigning Values to Variables
Retrieving Values with Variable Expansion
Configuring Bash with Shell Variables
Configuring Programs with Environment Variables
Setting the Default Text Editor
Setting Variables Automatically
Unsetting and Unexporting Variables

Managing Local Users and Groups
Users and Groups Explained
Elevating Privileges
Using su
Using sudo
Managing Local Users
Creating New Users
Modify User Accounts
Deleting Users
Managing Local Groups
Managing Passwords
The /etc/shadow File
Modify Password Aging
Password Aging Defaults

Managing Linux File Permissions
Understanding Linux File Permissions
File Types
Reading File Permissions
Using Perl Scripts to Read File Permissions
Translating Symbolic Permissions to Octal and Binary Notation
File Ownership
Changing File Ownership
Default Permissions and Umask
Setting File Permissions Using chmod
Setting Permissions only on Directories
Special Permissions
Listing SUID Programs
Permissions Summary

Monitoring and Managing Processes
Process States
Listing Processes
Searching for Processes
Real-Time Utilization
Controlling Jobs
Running Jobs in the Background
Killing Processes

Managing Services
Introduction to systemd
Describing Service Units
Listing Service Units
Viewing Service States
Controlling Services

Working with the SSH Client
Authenticating Servers
Configuring Client Behaviour
Authenticating the Client
Configuring Clients

System Logging
Logging Using Rsyslogd
Rotating Log Files
Reading the Journal Log
Debugging Services with journalctl
Persisting The Journal Log
Configuring Time

Networking Within Red Hat Enterprise Linux 8
TCP/IP Protocol Suite
IPv4 Network Addressing
Network Mask
IPv6 Network Addressing
Interface Names in RHEL 8
Viewing Network Configuration
Check Connectivity with other Hosts
Diagnosing Open Ports on Server
Configuring the Network from the CLI
Working with Network Script Files
Configuring Host Names and Name Resolution
Name Resolution

Archiving Files
Creating Tar Archives
Listing Tar Archives
Restoring Tar Archives
Appending to Archives
Combining Archives
Restoring Files to Original Locations

Managing Software in Red Hat Enterprise Linux 8
RPM
Package Management with Yum
Managing Repositories
Yum Modules

Linux Storage
Block Devices
Monitor Space
Searching for Files

Remote Monitoring
Installing Cockpit
Cockpit Virtual Machine Manager