Introduction

Introducing Hypervisors

Downloading and Installing Virtual Box

Prerequisites to Install RHEL9 VM & Downloading RHEL9 DVD Binary ISO

Installing RHEL 9 Virtual Machine-Part1

Installing RHEL 9 Virtual Machine-Part2

Importing IPA Server Appliance

Connecting System and IPA Server on Internal Network

Adding Extra Interface on VM and Connecting to Internet using NAT network

Introducing Course

Introducing LAB Environment

Walk Through Exam Objectives

Introducing 389 Directory Server

Introducing DNS Service

Introducing NTP Service

Introducing NFS Service

Introducing Samba Service

Introducing SELinux

Setting root password to gain access to System-Part 2

Introducing SELinux Modes

Configuring System to set SELinux in enforcing mode

Introducing Software repositories in RHEL-9

Registering Red Hat System to Subscription Portal

Setting root password to gain access to System-Part 1

Configuring System to use local repositories

Setting up Local DNF(YUM) repositories

Assigning Hostname

Understanding Basic Networking in RHEL

Introducing NetworkManager and keyfile format

(Important for LAB)Configuring metric value for route and Order of DNS Server

Configuring Hostname resolution

Configuring a Static route

Assigning IPv6 Address

Part 1 - Introducing Default User Settings useradd file

Part 2 - Introducing Default User Settings login.defs file

Verifying Default User Settings of User Account

Part1. Overriding Default User Settings -useradd

Modifying Defaults in useradd file

Modifying Defaults in login.defs

Part2. Overriding Default User Settings -passwd & chage

Creating User With Specific UID and Non-interactive Shell

Assigning Supplementary (Secondary) Group with Specific GID to User

Creating User with Non-Default Home Directory and Password Aging Controls

Configuring Password Aging and Account Expiration for User Account

Introducing autofs service and configuration files

Setting User Owner and Group Owner on Directory

Configuring System as IPA Client to Use LDAP Users

Configuring autofs to Mount Home Directory of LDAP user

Deleting User's Account

Configuring Autofs to Mount Home Directories of Multiple Users Using Wild Cards

Configuring Superuser Access

Securely Copy files Across Hosts Using scp

Introducing IO redirection and file descriptors

Introducing grep ,regular expressions and important options

Making SSH Connection to Remote Host

Understanding BRE's, ERE's and Fixed Strings with grep examples

Using egrep to Match Lines Starting With Pattern(s)

Walk through the manual page of grep

Using egrep for non-matching lines (Invert-match)

Using egrep to Match Lines Starting With Pattern(ignore case)

Introducing find command

Using find Command to list Regular Files Owned by User

Using find to copy all regular files owned by user

Using find Command to Locate File Using Name of File

Using find Command to Save all Directories Owned by User

Walk though manual page of find command

Using find to Search Files with extension .txt

Using find Command to List all Files & Directories based on UID

Using tar to Archive Contents with gzip Compression

Using tar command to Extract the Data from Archive

Using tar Command to Archive and Compress Contents of Directory

Introducing tar command and walk through manual page of tar command

Decompressing Files using gunzip and bunzip2

Walk through the manual page of gzip and bzip2

Introducing vim editor

Introducing Filesystem Permissions and Commands

Setting User & Group Ownership and Configuring Permissions

Introducing Access ACLs and Default ACLs-Part1

Walk through manual page of chmod and chown commands

Introducing Access ACLs and Default ACLs-Part2

Configuring ACLs on File and Directory

Creating Symbolic and Hard links

Introducing Symbolic and Hard Links

Configuring System to boot in Graphical target

Managing systemd services -StartStopRestartEnableMaskUnmask

Introducing systemd and systemd units

Scheduling cron job as root user in other user's crontab

Scheduling Jobs using at command

Scheduling cron job as regular user

Configuring System to use time services

Introducing DNF Package management commands

Working with module streams

Modifying GRUB2 Bootloader

Modifying GRUB2 Bootloader-grubby tool

Rebooting, Shutdown, Hibernating & Suspending Red Hat Systems

Booting System into different targets manually

Running Job in background with predefined nice Value

Adjusting Priority of Process with renice

Introducing top command

Enabling IPv4 Packet forwarding using sysctl.d

Introducing tuned and tuned profiles

Tuning kernel parameter vm.swappiness persistently

Killing Processes forcefully

Tuned profile configuration file- tuned.conf

Introducing important performance variables

Walking through manual page for tuned-profiles

Tuned main configuration file -tuned-main.conf

Merging two tuned profiles

Customizing tuned profile

Preserving system journals

Locating and interpreting system log files and journals

Setting tuned profile

Introducing Standard Disk Partitions and Filesystems

Introducing Logical Volumes

Introducing mkfs command

Introducing fdiskgdisk command

Introducing mount command and fstab file

Creating Extended and Logical Partitions

Mounting Filesystem with Read Only Permission Through fstab

Configuring & Adding SWAP to System

Configuring Logical Volume (LVMs) using physical extents of Non-default Size

Configuring & Mounting Logical Volume

Configuring logical volume using 100% FREE PE's on volume group

Extending logical volume (LVMs) and resizing filesystem

Extending volume group size to extend logical volume & filesystem

Overriding existing filesystem type

Mounting filesystem with Systemd mount unit file

Introducing filesystem special permissions bits

Mounting NFS share through fstab

Mounting samba share through fstab & Share permissions

Configuring directory for group collaboration

Introducing firewalldfirewalld services and zones

Configuring Firewall Using firewall-config (Graphical Interface)

Configuring Firewall Using firewall-cmd

Configuring Default file permissions for specific user

Configuring Key Based Authentication For SSH

Restricting access for specific service to specific network using rich rules

Introducing default file permissions and umask

Setting SELinux Context Type on Non-Default Port for SSH Service

Setting SELinux Boolean Persistently

Setting SELinux File Context Type Persistently

Introducing rootful & rootless containers

Introducing default podman networking

Installing container-tools and getting help

Searching and retrieving image & registries.conf file - Part1

Introducing Containers and Container Images

Pulling Container Image from Registry & Inspecting Image

RunningInspectingStopping Container and Deleting Image

Searching and retrieving image & registries.conf file - Part2

Building image with buildah using Containerfile

Inspecting image using skopeo

Mounting Persistent Volume inside containers

Configuring System to Start Container as Systemd Service at boot

Extending Privileges to Containers

Understanding Runlabels in the Image

Running rsyslog Container Service Using Runlabels

Running Apache Service inside Container mounting Document Root from Host

Introducing if statement and syntax of if statement

Using if test to compare integers

Introducing for Statement and Syntax of for Statement

Understanding command line arguments for script

Adding Users Using for Statement with Input file

Using $1,$2 .. to Provide Usernames to Script for Creating Users

Installing DNS,LDAP Services with FREE IPA Server Solution-Part1

Managing DNS zones and DNS Record Entries

Installing DNS,LDAP Services with FREE IPA Server Solution-Part2

Creating LDAP Users and Home directories

Configuring NFS Server to Export LDAP User's Home Directories

Configuring Samba share

Configuring NTP Server to Allow Client(s) to Use Time Services