Redhat System Administration II – SA2 (RHEL8)

Key tasks needed to become a full time Linux Administrator and to validate those skills via the Red Hat Certified System

What you'll learn:
Scheduling Future Tasks
Practice QA for Redhat Linux EXAM-200
Adjusting Tuning Profiles
Controlling Access to files with ACLs
Managing SELinux Security
Adding Partitions, File Systems, and Persistent mounts
Creating Logical Volumes
Controlling the Boot Process
Managing Network Security
Automating Installation with Kickstart
Network File System
KVM Virtualization
Improving Command-line Productivity
Introducing containers
Lab - configure a basic container

Requirements
PC or Laptop with internet Connection
RHEL, CentOS, VMware Workstation & Oracle VirtualBox
Students should have completed Red Hat System Administration - SA1

Description
Note: This is not an authorized Red hat training course module.

Redhat Certified System Administrator Exam (EX200 - 2.5 Hours Required), there are two course modules as shown below.

Redhat System Administration I - SA1 (First part)

Redhat System Administration II - SA2 (Second part) ==> This Course Module will teach you this module.

Course Content

Redhat System Administration II - SA2 (RH134) with Practice QA for first level of Exam.

Introduction

Overview about the Course Module

Scheduling Future Tasks

Overview of Scheduling Tasks

Scheduling a Deferred User Job

Controlling Nice Values with Queue Designations

Scheduling Recurring User Jobs

Scheduling a job for a specific time - 1

Scheduling a job for a specific time - 2

Practice Lab Session - Scheduling a Recurring User Jobs

Scheduling Recurring System Jobs

Practice Lab Session - System Jobs

Scheduling tasks with Systemd Timer

Practice Lab Session - Systemd Timer

Managing Temporary Files

Cleaning Temporary Files with a Systemd Timer

Lab - Configure systemd-tmpfiles to remove unused temporary files from /tmp

Lab - Configure systemd-tmpfiles to periodically purge files from another directory

Adjusting Tuning Profiles

Overview about tuning profiles

Managing profiles from the command line

Lab Session - Tune a server’s performance by activating the tuned service and apply a tuning profile to powersave.

Process Scheduling & Multitasking

Displaying Nice Levels from the Command Line

Changing the Nice Level of an Existing Process

Lab Session: Influencing Process Scheduling

Controlling Access to files with ACLs

Access Control List Concepts

Set ACLs on files

Default ACLs

Viewing and Interpreting ACL Permissions

Lab - set acl on files

Lab - set acl on directories

Lab - Mask to limit the set of permissions

Lab - default acl

Guided Exercise on ACL

Managing SELinux Security

SELinux Security Concepts

SELinux Context

SELinux Modes

Apache service without SELinux Protection (DAC)

Apache service with SELinux Protection (MAC)

Practical approach to understand SELinux

Lab - Change context temporary

Lab - Change context permanently

Lab - SELinux inheritance and its pitfalls

SELinux Booleans

Lab - SELinux Booleans

Audit logs & Troubleshooting SELinux

Adding Partitions, File Systems, and Persistent mounts

Partitioning a Disk

Benefits of disk partitioning

MBR Partitioning Scheme

Primary & Extended Partitions

GPT Partitioning Scheme

How to identify what partitioning standard is used

Managing Partitions with Parted

Creating a file system

Swap Space Concepts

Create a Swap Partitions

Setting the Swap Space Priority

Creating Logical Volumes

The LVM Logical Volume Manager

Features of LVM

LVM Architecture Overview

Architectural Overview via Diagram

LVM Components - PV, VG, LV

Lab 1 - Creation of PV, VG, LV

Lab 2 - Create File System, Mount Point

Lab 3 - Remove a Logical Volume

Lab 4 - Extending and Reducing a Volume Group

Lab 5 - Extending a LV and xfs & ext4 FS

Lab 6 - Extend a swap space

Controlling the Boot Process

Booting Process of a RHEL 8 System

Selecting a systemd target, rebooting & shutting

Lab Exercise - Determine the default target and change the target into running system.

Lab - Selecting a rescue mode at boot time

Resetting a root password

Repaiting Systemd Boot Issues

Booting RHEL 8 into Rescue Mode

Booting RHEL 8 into Emergency Mode

Enabling the Early Debug Shell

Repair a File System Issues at boot

Lab - Repair a File System

Managing Network Security

Firewall Concepts

Features and advantages of firewalld

Pre-defined Zones

Packet flow via firewalld

Add, remove services from firewall server - Lab Session

Addhttp service to allow access the website - Lab Session

Port Forwarding - allow access a website running on 12345 port

masquerading, network address translation

Lab Session - masquerading, port forwarding

rich rules

Lab Session - rich rules

Automating Installation with Kickstart

Overview Kickstart Server

Architectural Overview

Lab 1 - Configure dhcp server

Lab 2 - Configure tftp, pxe boot server

Lec 3 - Configurehttpd, kick start configuration file

Lab 4 - Configurehttp repository, start services

Lab 5 - Boot the Client from Network

Network File System

Overview of NFS

nfsconf tool

Lab - Accessing Network-Attached Storage

Exercise - NFS Share

Mounting NFS Shares with Automounter

Automounter Benefits

Lab - Automounter using indirect map

Lab Session on Indirect Wildcard Maps

Lab Session on Direct maps

KVM Virtualization

Overview of Linux Virtualization

Hypervisor Concept - type 1 & type 2

Types of Virtualization

KVM, QEMU & Libvirt Architecture

virsh command to manager vm's

Lab Session

Introducing Containers

Introducing Container Technology

Planning for containers

Lab - configure a basic container

Lab - mapping container host ports to the container

Lab - stop, restart & remove container

Improving Command-line Productivity

Writing Simple Bash Scripts

Lab - Writing Simple Bash Scripts

Simple Commands in Linux

Variable, single and double quote, backslash

Redirection output

Redirection output - Lab

Last lecture

Who this course is for
There is no formal prerequisites for this course; however, previous system administrator experience on other operating system would be very beneficial.