Introduction to Linux Systems Administration Virtual Classroom Live March 17, 2025

Price: $2,500

This course runs for a duration of 5 Days.

The class will run daily from 10 AM ET to 6 PM ET.

Class Location: Virtual LIVE Instructor Led - Virtual Live Classroom.

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Description

Linux System Administration is a comprehensive hands-on course that teaches students how to install, configure and maintain an Enterprise Linux system in a networked environment.

This lab-intensive class explores core administrative tasks such as: creating and managing users, creating and maintaining file systems, determining and implementing security measures and performing software installation and package management. Linux networking topics include installing and supporting SSH, NFS, Samba and the Apache Web server. Students will explore common security issues, as well as several tools, such as the PAM modules that help secure the operating system and network environment. Upon successful completion of this course, students will be prepared to maintain Linux systems in a networked business environment.

Although the course includes installing and configuring a CentOS 7 / RHEL 7 Linux system, much of the course content also applies to Oracle, Ubuntu, Scientific and other current versions of mainstream Linux distributions. Labs include user and group maintenance, system backups and restoration, software management, administration tasks automation, file system creation and maintenance, managing remote access, working with cron, and configuring basic file sharing and Web services, as well as working with system logging utilities such as rsyslog and much more.

Objectives

This course is about 50% lab to lecture ratio, combining expert instructor-led discussions with practical hands-on skills that emphasize current techniques, best practices and standards. Working in this hands-on lab environment, guided by our expert practitioner, attendees will explore:

Installing the Linux operating system and configuring peripherals
Performing and modifying startup and shutdown processes
Configuring and maintaining basic networking services
Creating and maintaining system users and groups
Understanding and administering file permissions on directories and regular files
Planning and creating disk partitions and file systems
Performing maintenance on file systems
Identifying and managing Linux processes
Automating tasks with cron
Performing backups and restoration of files
Working with system log files
Troubleshooting system problems
Analyzing and taking measures to increase system performance
Configuring file sharing with NFS
Configuring Samba for file sharing with the Windows clients
Setting up a basic Web server
Understanding the components for setting up a LAMP server
Implementing basic security measures

Audience

This is an introductory-level systems administration course geared for Systems Administrators and users who wish to learn how to how to install, configure and maintain an Enterprise Linux system in a networked environment. Attendees should have incoming experience with common UNIX/Linux user-level commands, such as moving, copying and editing files. Experience with the vi editor is a plus

Course Overview

System Administration Overview

UNIX, Linux and Open Source
Duties of the System Administrator
Superusers and the Root Login
Sharing Superuser Privileges with Others (su and sudo Commands)
TCP/IP Networking Fundamentals
Online Help

Installation and Configuration

Planning: Hardware and Software Considerations
Site Planning
Installation Methods and Types
Installation Classes
Partitions
Logical Volume Manager - LVM
File System Overview
Swap Partition Considerations
Other Partition Considerations
The Linux Boot Loader: grub
Software Package Selection
Adding and Configuring Peripherals
Printers
Graphics Controllers
Basic Networking Configuration
Booting to Recovery Mode

Booting and Shutting Down Linux

Boot Sequence
The systemd Daemon
The systemctl Command
Targets vs. Run Levels
Modifying a Target
Service Unit Scripts
Changing System States
Booting into Rescue Mode
Shutdown Commands

Managing Software and Devices

Identifying Software Packages
Using rpm to Manage Software
Using yum to Manage Software
Installing and Removing Software
Identifying Devices
Displaying Device and System Information (PCI, USB)
Plug and Play Devices
Device Configuration Tools

Managing Users and Groups

Setting Policies
User File Management
The /etc/passwd file
The /etc/shadow file
The /etc/group file
The /etc/gshadow file
Adding Users
Modifying User Accounts
Deleting User Accounts
Working with Groups
Setting User Environments
Login Configuration Files

The Linux File System

Filesystem Types
Conventional Directory Structure
Mounting a File System
The /etc/fstab File
Special Files (Device Files)
Inodes
Hard File Links
Soft File Links
Creating New File Systems with mkfs
The lost+found Directory
Repairing File Systems with fsck
The Journaling Attribute
File and Disk Management Tools

Linux File Security

File Permissions
Directory Permissions
Octal Representation
Changing Permissions
Setting Default Permissions
Access Control Lists (ACLs)
he getfacl and setfacl commands
SUID Bit
SGID Bit
The Sticky Bit

Controlling Processes

Characteristics of Processes
Parent-Child Relationship
Examining Running Processes
Background Processes
Controlling Processes
Signaling Processes
Killing Processes
Automating Processes
cron and crontab
at and batch
System Processes (Daemons)

Working with the Linux Kernel

Linux Kernel Components
Types of Kernels
Kernel Configuration Options
Recompiling the Kernel

Shell Scripting Overview

Shell Script Fundamentals
Bash Shell Syntax Overview
Shell Script Examples

System Backups

Backup Concepts and Strategies
User Backups with the tar Command
System Backup Options
The xfsdump and xfsrestore Commands

Troubleshooting the System

Common Problems and Symptoms
Troubleshooting Steps
Repairing General Boot Problems
Repairing the GRUB 2 Boot Loader
Hard Drive Problems
Restoring Shared Libraries
System Logs and rsyslogd

Basic Networking

Networking Services Overview
NetworkManager Introduction
Network Configuration Files Locations and Formats
Enabling and Restarting Network Services with systemtcl
Configuring Basic Networking Manually
Configuring Basic Networking with NetworkManager

LAMP Server Basics

LAMP Overview
Configuring the Apache Web Server
Common Directives
Apache Virtual Hosting
Configuring an Open Source Database
MySQL
MariaDB
PHP Basics
Perl CGI Scripting

Introduction to System Security

Security Overview
Maintaining System Security
Server Access
Physical Security
Network Security
Security Tools
Port Probing with nmap
Intrusion Detection and Prevention
PAM Security Modules
Scanning the System
Maintaining File Integrity
Using Firewalls
Introduction to firewalld

The Samba File Sharing Facility

Configure Samba for Linux to Linux/UNIX File Sharing
Configure Samba for Linux to Windows File Sharing
Use the smbclient Utility to Transfer Files
Mount/Connect Samba Shares to Linux and Windows Clients

Networked File Systems (NFS)

Using NFS to Access Remote File Systems
Configuring the NFS Server
Configuring the NFS Client
Exporting File Systems from the NFS Server to the NFS Client

Prerequisites

Other Available Dates for this Course

Virtual Classroom Live
December 09, 2024

$2,500.00

5 Days 10 AM ET - 6 PM ET

Virtual Classroom Live
February 03, 2025