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Red Hat Enterprise Linux Systems Administration III (GL254)

This GL254 course is designed to follow an identical set of topics as the Red Hat® RH254, RH255 RHCE exam prep courses with the added benefit of very comprehensive lab exercises and detailed lecture material.

4 days
£1,700.00 incl. VAT

Description

This GL254 course is designed to follow an identical set of topics as the Red Hat® RH254, RH255 RHCE exam prep courses 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 GL199 course cover the certification objects of the Red Hat Certified Engineer (RHCE) exam.

This course builds upon a foundation of core Linux systems administration principles and skills. Students will advance their Linux systems administration knowledge. The course will focus on helping students optimize system administration skills using automation techniques and deploy commonly used network services. Once this course is completed students will know how to deploy critical network services in a secure fashion.

Red Hat® is a registered trademark of Red Hat, Inc. and its use by Guru Labs, L.C. does not imply association or sponsorship by Red Hat, Inc.

Audience Profile

Experienced Linux administrators wishing to learn enterprise-level automation techniques through scripting, how to deploy and secure network services, and how to manage other key security features of Red Hat Enterprise Linux.

Prerequisites

Students should have skill equal to those taught in the GL124 "Red Hat Enterprise Linux Systems Admin I" and GL134 "Red Hat Enterprise Linux Systems Admin I" courses. Also these prerequisite skills are taught in the GL120 "Linux Fundamentals" and GL250 "Enterprise Linux Systems Administration" courses.

What's included

  • Study Guide
  • Experienced Red Hat Linux Instructor
  • Remote access to a virtual lab
  • Certificate on Completion
  • Refreshments (Classroom training)

Course Outline

Module 1: LINUX KERNEL & DEVICES

Lessons:

  • Hardware Discovery Tools
  • 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

Labs:

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

Module 2: CONTROL SERVICES AND DAEMONS

Lessons:

  • systemd System and Service Manager
  • Modifying systemd services
  • Systemd Service Sandboxing Features
  • systemd Targets
  • Using systemd
  • Legacy Support for SysV init

Labs:

  • Managing Services with Systemd's systemctl
  • Creating a systemd unit file
  • Troubleshooting Practice: Boot Process

Module 3: MANAGE IPV6 NETWORKING

Lessons:

  • IPv6

Labs:

  • Configuring IPv6

Module 4: CONFIGURE LINK AGGREGATION AND BRIDGING

Lessons:

  • Interface Aggregation
  • Interface Bonding
  • Network Teaming
  • Interface Bridging

Module 5: CONTROL NETWORK PORT SECURITY

Lessons:

  • SELinux Security Framework
  • SELinux Modes
  • SELinux Commands
  • Choosing an SELinux Policy
  • SELinux Booleans
  • Permissive Domains
  • SELinux Policy Tools
  • FirewallD

Labs:

  • Firewall Configuration
  • FirewallD

Module 6: MANAGE DNS FOR SERVERS

Lessons:

  • Server Roles
  • Resolving Names
  • Resolving IP Addresses
  • Basic BIND Administration
  • Configuring the Resolver
  • Testing Resolution
  • BIND Configuration Files
  • named.conf Syntax
  • named.conf Options Block
  • Creating a Site-Wide Cache
  • rndc Key Configuration
  • Address Match Lists & ACLs
  • Restricting Queries

Labs:

  • Configuring a Slave Name Server
  • Use rndc to Control named

Module 7: CONFIGURE EMAIL DELIVERY

Lessons:

  • SMTP
  • SMTP Terminology
  • SMTP Architecture
  • SMTP Commands
  • SMTP Extensions
  • SMTP Session
  • Postfix Features
  • Postfix Architecture
  • Postfix Components
  • Postfix Configuration
  • master.cf
  • main.cf
  • Configuration Commands

Labs:

  • Configuring Postfix
  • Postfix Virtual Host Configuration
  • Postfix Network Configuration

Module 8: PROVIDE BLOCK-BASED STORAGE

Lessons:

  • Remote Storage Overview
  • Remote Block Device Protocols
  • iSCSI Architecture
  • Open-iSCSI Initiator Implementation
  • iSCSI Initiator Discovery
  • iSCSI Initiator Node Administration
  • Mounting iSCSI Targets at Boot
  • iSCSI Multipathing Considerations

Labs:

  • iSCSI Initiator Configuration

Module 9: PROVIDE FILE-BASED STORAGE

Lessons:

  • Remote Filesystem Protocols
  • File Sharing via NFS
  • NFSv4+
  • NFS Clients
  • NFS Server Configuration
  • Implementing NFSv4
  • Accessing Windows/Samba Shares from Linux

Labs:

  • NFS Server Configuration

Module 10: CONFIGURE MARIADB DATABASES

Lessons:

  • Popular SQL Databases
  • MariaDB
  • MariaDB Installation and Security
  • MariaDB User Account Management

Labs:

  • Installing and Securing MariaDB

Module 11: PROVIDE APACHE HTTPD WEB SERVICES

Lessons:

  • HTTP Operation
  • Apache Architecture
  • Apache Configuration Files
  • httpd.conf – Server Settings
  • httpd.conf – Main Configuration
  • HTTP Virtual Servers
  • Virtual Hosting DNS Implications
  • httpd.conf – VirtualHost Configuration
  • Port and IP based Virtual Hosts
  • Name-based Virtual Host
  • TLS Using mod_ssl.so
  • Dynamic HTTP Content

Labs:

  • Apache Architecture
  • Apache Content
  • Configuring Virtual Hosts
  • Using TLS Certificates with Apache
  • CGI Scripts in Apache

Module 12: WRITE BASH SCRIPTS

Lessons:

  • Shell Script Strengths and Weaknesses
  • Example Shell Script
  • Positional Parameters
  • Input & Output
  • Comparisons with test
  • Exit Status
  • Conditional Statements
  • Flow Control: case
  • The borne for-Loop
  • The while and until Loops

Labs:

  • Writing a Shell Script

Module 13: CONFIGURE THE SHELL ENVIRONMENT

Lessons:

  • Shells
  • Identifying the Shell
  • Changing the Shell
  • Configuration Files
  • Script Execution
  • Shell Prompts
  • Bash: Bourne-Again Shell
  • Bash: Configuration Files
  • Bash: Command Line History
  • Bash: Command Editing
  • Bash: Command Completion
  • Bash: prompt

Labs:

  • Linux Shells
  • Bash History
  • Aliases
  • Bash Login Scripts

Module 14: LINUX CONTAINERS PREVIEW

Lessons:

  • Application Management Landscape
  • Application Isolation
  • Resource Measurement and Control
  • Open Container Initiative

Labs:

  • Container Concepts runC
  • Container Concepts Systemd

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