Linux Administration With Troubleshooting Skills: Hands-On

A Project-Based Approach to get the Linux Skills & Shell to boost your career and get ahead : 40+hrs with 400+Lectures.

What you'll learn
Linux Administration with Troubleshooting Skills
Linux basic concepts,Introduction & History of Unix/Linux
Linux Interview Questions and Answers
Bash profile, Variables & Standard Input output Redirecting
Linux User Administration
Permissions in Red Hat Linux
Controlling Access to files with ACLs
Process Management
Kernel Modules
Disk Partitions, File Systems Creations & RAID Configuration
Logical Volume Manager Administration
RPM (Red Hat Package Manager)
YUM (Yellowdog Updater, Modified)
Linux OS Minor Upgrade
FTP - File Transfer Protocol
Apache Web Server Administration
DNS (Domain Name System)
Samba Server Concepts & Configuration
Network File System  (NFS)
Automating Installation using kickstart
Networking Concepts in Linux
Linux Performance Monitoring
Troubleshooting Linux Boot Problems in Linux (Basic System Recovery)
Overview of Red Hat Enterprise Linux 7
GRand Unified BootLoader (Grub2)
Kdump configuration on RHEL 7
Overview of Red Hat Satellite 6.2
Managing SELinux Security
Backup and Restore
Linux Commands Tutorials
Advanced Linux Commands
Linux Crontab
OpenSSH
Postfix Mail Server Configuration
Requirements
PC or Laptop with internet Connection
There are no formal prerequisites for this course; however, previous system administrator experience on another operating system would be very beneficial.
Description
By the end of the course you will:· Be able to confidently use the Linux operating system to increase your productivity and Career.· Be able to perform everyday computing tasks from the Linux command line.Course ContentLinux basic concepts, Introduction & History of Unix/Linux· Introduction to Unix· History of UNIX· What is LINUX· History of Linux· LINUX Distributions· Unix File SystemLinux Commands Tutorials· Lecture on various commands with proper explanation with examples in a live environment.· Overview of File System Structure· pwd, cd, ls, less, cp, file mkdir. more. mv, cat, rm rmdir, wc, dd, head, tail, touch, ln etcBash profile, Variables & Standard Input-output Redirecting· User's home directory· .bash_profile, .bashrc & .bash_logout· How to set PATH & alias in .bashrc profile· Familiar with Variables· Bash variable, Environmental variable & System Variables· Lab· Standard Input & Output Redirecting ( > , 2> ,&> )· Standard Input and Output· Redirecting Output to a File· Redirecting Output to a File· LabLinux User management· Understanding different types of groups and creation of groups· Creation of users in different groups· Understanding Passwd, Shadow Files· Understanding passwd aging· Creation of quotas for users, groups, and file systems· Understanding users security files· password aging policy using chage commands· TROUBLESHOOTINGPermissions in Red Hat Linux· Basic File Permissions· User-Based permissions groups· Permission Types· Change of permissions & ownership· Special Permissions· Setuid, Setguid, Sticky bit, ACL, etc· Two Labs to demonstrate the permissions from a real IT industry environment.Controlling Access to files with ACLs· Access Control List Concepts· Set ACL's on files· Default ACL· Practice Lab Session on set acl on files· Practice Lab Session on set acl on directories· Practice Lab Session on a mask to limit the set of permissions· Practice Lab Session on default ACL· Practice Exercise - Scenario-based activityLinux Crontab· Overview of Linux Crontab & its format· Schedule a job for a specific period of time· Schedule a job for more than one instance (e.g. twice a day)· Schedule a job for a specific range of time· Schedule a job every weekday during working hours· how to view crontab entries?· Schedule a job for every minute using cronLinux Find Commands· Basic find commands for finding files with names· Find files based on their permissions· Search files based on owners & groups· Find files and directories based on date & time· Find files and directories based on sizeOpenSSH· Overview of OpenSSH· What Are Some Of The OpenSSH Features?· OpenSSH options are controlled through the sshd_config file· Lab SessionTelnet· Overview about telnet· Configuration of telnet server on Linux· Xinetd ServiceProcess Management· Understanding ps commands with custom properties & Nice values etc· Different stats of a process like "D", "S", "T", "Z" etc· Kill commands to terminate the process· LabKernel Modules· What is Kernel & its features· Kernel Modules· Commands to manipulate the kernel (insmod,lsmod,modinfo,modprobe &rmmod)· How to know the name of the module or kernel driver for any device like lan· LabDisk Partitions, File Systems Creations & RAID Configuration· Creating the partitions in a simple disk using fdisk· Understanding the different options in fdisk utility· Creating File Sytems using (ext3/ext4/xfs FS)· Mounting/Umounting FS· Entry in fstab· Introduction to RAID· Concepts & features of RAID· RAID Level· How to configure the different levels of Raids like (0,1,5,6, 10, etc)· Lab SessionsLogical Volume Manager Administration· LVM Architecture Overview· LVM Components· LVM Logical Volumes· Logical Volume Creation Overview· Growing a File System on a Logical Volume· Logical Volume Backup· LVM Administration with CLI Commands· Using CLI Commands· Physical Volume Administration· Creating Physical Volumes· Displaying Physical Volumes· Preventing Allocation on a Physical Volume· Resizing a Physical Volume· Removing Physical Volumes· Volume Group Administration· Creating Volume Groups· Adding Physical Volumes to a Volume Group· Displaying Volume Groups· Removing Physical Volumes from a Volume Group· Changing the Parameters of a Volume Group· Activating and Deactivating Volume Groups· Removing Volume Groups· Overview about LVM Metadata· Metadata Contents· How to identify and recover failed LVM diskRPM (Red Hat Package Manager)· Install: It is used to install any RPM package.· Remove: It is used to erase, remove or un-install any RPM package.· Upgrade: It is used to update the existing RPM package.· Verify: It is used to query about different RPM packages.· Query: It is used for the verification of an RPM package.YUM (Yellowdog Updater, Modified)· Overview of YUM· Configuration& and installation of yum on Red Hat Linux Server· Lab-1· Lab-2· Yum History Command· Reverting and Repeating Transactions like undo & redo using yum commandLinux OS Minor Upgrade· Linux OS upgrade from RHEL 7.1 to RHEL 7.2· Lab Practice SessionsFile Transfer Protocol· Overview of FTP Server· Installation and configuration of FTP Server· Lab-1· Lab-2Apache Web Server Administration· Basic Setup· Verify installation· Package files· Main configuration file(s)· Backup· Edit the httpd.conf configuration file· ServerRoot· PidFile· ServerName· Add site to the host's file· DocumentRoot· ErrorLog· Listen· Create your HTML documents· Start the Web Server· Access the website· Local access· Internal & external access· Summary of basic setupDNS (Domain Name System)· Overview of DNS· Understanding root & top-level domains· How DNS works practically· What happens when I type any website name in the address bar of the browserSamba Server· Overview of Samba Server· Features of Samba Server· How Samba Server Works· Samba File sharing Server· CIFS File System· Practice Lab SessionsPostfix Mail Server Configuration· The structure of the Email System1.1 Mail User Agent1.2 Mail Transfer Agent1.3 Mail Delivery Agent1.4 SMTP· Configuring an RHEL Email System· Postfix Pre-Installation Steps· Installing Postfix on RHEL 7· Configuring Postfix· Starting Postfix on an RHEL System· Configure a Null Client· Relayhost· Introduction Dovecot, Imap & pop3· Configuring Dovecot· Thunderbird - Mail User Agent ( Configure Mail Box)Securing & Hardening a Linux System· Linux Physical Security· How to break root password· Securing the grub menu· Reset root password from rescue mode· BIOS Protection· General Security· Keep your system updated· Turn off IPv6· Disable USB Stick to detect· Restrict Users to Use Old Passwords· Check Password Expiration of a User· Password Expiration - Lab Session· Verify accounts for an empty password· Verify accounts with "Zero" UID· Review logs regularly· Keep /boot as read-onlyManaging Server Firewalls· Firewall concepts· About nftables, features, and advantages of firewalld· Firewalld components, pre-defined zones· How packet flows through the firewall· Check firewalld services - Lab Session· Adding and Removing Services & Port from Firewall Server - Lab Session· Add Services Permanently in Firewalld - Lab Session· Add HTTP Service in firewalld - Lab Session· Port forwarding - Lab Session· Conceptual discussion about Masquerading, Packet Flow in Firewalld· Masquerading with Port Forwarding - Lab Session· About Rich Rules in Firewalld· Specifically allow a Server using Rich Rules - Lab Session· Allow Telnet Port, SSH with log-prefix using Rich Rule - Lab Session· Accept, Reject, Drop - Lab SessionNetwork File System (NFS) on Linux· Overview of NFS Server· Installation and configuration of NFS Server· Lab-1· Lab-2Automating Installation using Kickstart· Overview of Kickstart Server· Features of Kickstart Server· Configuration & Installation of Kickstart Server· Configuration of dhcp, tftpd, nfs for Kickstart Server· Configuration of kickstart config file using graphical mode· PXE Boot Environment· Lab Session· Unattended Client boot and do the installation via networkNetworking Concepts in Linux· New Sets of commands introduced in RHEL 7 for managing the network interfaces.· Check the status of ethernet interfaces· Add and configure the new ethernet interface· Activate the network services· Commands to change the network properties of an existing interface· Delete the ethernet interface· Learning of various new commands related to managing network interfaces.· Overview of Routing Table· Understanding the output of netstat -rn or route -n output· LabLinux Performance Monitoring· Introduction about Performance monitoring in Linux· Important four subsystems that need to be monitored.1. CPU 2. Memory3. IO4. Network· Familiar & understanding with CPU Utilization· Like Context switches, Run Queue, CPU utilization & Load Average· Familiar & understanding with Memory Utilization· Familiar & understanding with I/O Analyses· Familiar & understanding with Network Monitoring· Familiar with various Commands to manage performance issues in Linux Servers· top· vmstatTroubleshooting Linux Boot Problems in Red Hat Linux 6 (Basic System Recovery)· Simple & step by step understanding of Linux Boot Process ( 2 detailed Sessions)· Overview of Red Hat Linux 7 and their features· Comparison of features of RHEL7 with RHEL6· Lab on Basic System Recovery (Initramfs file missing/Corrupted)· Lab on Basic System Recovery (Grub related issues like stage 1.5/2 grub is missing)-Part1· Lab on Basic System Recovery (Grub related issues like stage 1.5/2 grub is missing)-Part2· Lab on Basic System Recovery (Master Boot Record missing/corrupted)· Lab on Basic System Recovery (Critical files are missing like mount binary, an incorrect entry in fstab etc)· Lab on Basic System Recovery (Critical files are missing like mount binary, an incorrect entry in fstab, etc)Overview of Red Hat Enterprise Linux 7· Overview about RHEL7 with its new features· Comparison with RHEL 6· Lab on systemd service (Familiar with different systemd targets & new commands)· Rescue mode in RHEL 7· Lab on rescue mode· Emergency mode in RHEL 7· Lab on emergency mode· Troubleshooting mode (Overview and Lab)· Lab on Recovering the Root password in RHEL7o Resetting the Root Password Using an Installation Disko Resetting the Root Password Using rd.breakTroubleshooting Linux Boot Problems in Red Hat Linux 7 (Basic System Recovery)· Lab on Basic System Recovery (Initramfs file missing/Corrupted)· Lab on Basic System Recovery (Grub related issues· Lab on Basic System Recovery (Master Boot Record missing/corrupted)· Lab on Basic System Recovery (Critical files are missing like mount binary, an incorrect entry in fstab, etc)GRand Unified BootLoader (Grub2)· Overview of Grub· Grub Configuration file· Features of Grub2 and its comparison with Legacy Grub· Practical Lab Session - Different commands to run at Grub2 prompt· Practical Lab Session - Boot from Grub (Selecting Kernel & Initramfs)· Practical Lab Session - How to make your grub password protectedKdump configuration on RHEL 7· Overview of kdump· How to enable Kdump on RHEL 7· Lab SessionRed Hat Satellite 6.2· Overview of Satellite Server· Pre-Requisites (What needs to be done before initiating the Red Hat Satellite Server installation)· Registering the server using subscription-manager· Installing the Satellite Server Packages & updating the Server· Installing satellite from the Offline Repositories.· Initial Configuration for the satellite server· Registering Satellite· Downloading/Uploading manifest (Importing manifest to Installed Satellite server)· Attaching a subscription· Create Red Hat Repo's as per the environment requirement· Creating Activation· Registering server (Red Hat Satellite client)· RecapManaging SELinux Security· Introduction - SELinux· SELinux Security Concepts· Changing SELinux Modes· Practice Lab Sessions· Changing SELinux Contexts· SELinux Booleans· Audit logs & troubleshooting SELinuxBackup and Restore· Overview of Backup· Various commands for backup· Types of backup· Full backup, Incremental backup, and differential backupdump command to take backup & restorationAdvanced Linux Commands· dig, nslookup, rsync, scp, ssh, sftp, find, grep, locate, df, du, lsof, ps, top, who,cut, sort, vi, sed, awk, tar, gzip, bzip2 etc· useradd, userdel, usermod, groupadd, groupdel, id, chage, chroot, chown etc· mount, umount, fdisk, mkfs, fsck,/proc, uptime etc· ping, nslookup, telnet, ifconfig, ifconfig-a, netstat -a etc· systemctl -at service, systemctl -t service –state=active, systemctl start name.service, systemctl enable name.service etc· pvs, vgs, pvdisplay,lvs, lvdisplay, pvcreate, pvremove, vgcreate, vgrename, vgremove, vgextend, vgreduce, lvcreate, lvextend, lvreduce,fdisk, vgexport, vgimport, vgcfgrestore, vgcfgbakcup, watch, whoami, passwd, su etc.Linux Bash Shell Scripting: A Practical way of LearningPractical approach to learn and explore the shell scripting with various industrial projectsIntroduction of Shell Programming· What is Bash Shell?· Types of Shell available in Linux· About Shell Scripting· Bash Shell Startup Scripts· User’s Home Directory - .bash_profile, .bashrc & .bash_logout· Shebang· Create a simple Shell Script· Setting up permissions on a script· Debug a ScriptThe Shell Variables & Environment· Bash Variables· Environmental Variables· System Variables· Assign values to shell variables· Customize the bash shell environments· set, env & export command· Rules for naming the variable name· Simple Script using the echo command· Quoting· There are three Type of quoting· The double quote · The single quote · The Backslash · User's Input via Keyboard· Read Command· IFS· Practice Lab SessionArithmetic Operations· Performing Arithmetic Operations· Create an integer Variable· Create the Constants Variable· Path name expansion· Wildcards

, ?, [..] etc· Create & use aliases· Practice Lab SessionsIndustrial Project to Completely Automate the Pre-validation report· A Shell Script to collect the required information from a server· The Bash Color· Writing Color Text· Various Color Codes for Foreground & Background Text· Lab Session on Bash Color· Script to fetch the system information i.e system_details· Schedule the script via cron· Final Script to fetch the environment report with a single click· Lab SessionConditional Statements (Decision Making)· Overview of conditional execution· What is Condition?· Boolean value (True & False)· If else statement· Lab Session on if..else..· if..elif..else..fi statement· test command· Logical AND &&· Logical OR !!· The exit status of a command· Numeric Comparison· String Comparison· File Attributes Comparison· Shell Command line parameters· Positional parameters via special shell variable $1, $2, $3,…,$N.· Practice Lab SessionBash Loops· Overview of loop statement· for loop statement· Lab on for loop· for loop using C like Syntax· for loop using command-line arguments· Nested for loop statement· Chessboard using a nested loop statement· While loop statement· Lab Session - read a text file line-by-line or using IFS· infinite while loop· case statement· Lab session on case statement· Create a simple menu-driven program or automation tool Using Case Statement· Industrial Project· Discussed various scripts using for or while loopShell Redirection & Process Management· Input Output Redirection in Linux· Lab Session on redirection· Pipelines in Linux· tee command· file descriptor (fd) to file for output· file descriptor (fd) to file for input· file descriptor (fd) for reading & writing· Practice Lab Session· Overview of a Process· Foreground & background Process· Various Stats of a process· Lab SessionFunctions· Defining functions· Displaying functions· Nested functions· Lab Session - writing functions· Calling functions· Local & global variables· Passing arguments into a function· return statement· Practice Lab SessionsAWK· Introduction Awk· Pattern matching· User-defined variables in awk· Awk pre-processing· Awk post-processing· Practice Lab SessionSED Stream Editor· Introduction· Replacing or substituting string.· Replacing the nth occurrence of a pattern in a line· Replacing all the occurrence of the pattern in a line· Changing the slash (/) delimiter· Using & as the matched string· Duplicating the replaced line with /p flag· Replacing string on a specific line number· Replacing string on a range of lines· Replace on lines which match a pattern· Deleting lines· Add a line after a match· Add a line before a match· Last Lecture

Overview

Section 1: Introduction

Lecture 1 Overview about Course Module

Lecture 2 Introduction to Unix

Lecture 3 History of Linux

Section 2: Filesystem Structure & Installation of Linux

Lecture 4 File structure in Unix/Linux

Lecture 5 Filesystem Structure in Linux-2

Lecture 6 File types in Linux

Lecture 7 Links to Download RHEL,CentoS, VMware Workstation, Oracle VirtualBox

Lecture 8 Linux Installation - 1

Lecture 9 Linux Installation - 2

Lecture 10 Connect from putty

Section 3: Linux Basic Commands Tutorial

Lecture 11 Basic Commands - pwd, cd & ls

Lecture 12 Linux commands - less, date, cp

Lecture 13 Linux commands - file, man, mkdir

Lecture 14 Linux Commands - mv, cat, rm & rmdir

Lecture 15 Linux Commands - wc & dd

Lecture 16 Linux Commands - hard link & soft link

Lecture 17 Linux Commands - tail, touch & head

Section 4: Simple way to understand permissions in Linux

Lecture 18 Overview of Permissions in Linux

Lecture 19 File & Directory Attributes

Lecture 20 Access Modes ( Absolute & Symbolic Mode)

Lecture 21 Change ownsership

Lecture 22 Lab Session - 1

Lecture 23 Lab Session - 2

Lecture 24 Lab Session - 3

Lecture 25 Lab Session - 4

Lecture 26 Lab Session - 5

Lecture 27 Setuid - Special Permissions

Lecture 28 command to set setuid

Lecture 29 Setgid - Special Permissions

Lecture 30 Sticky Bit - Special Permissions

Section 5: User Administration

Lecture 31 Overview of User Administration

Lecture 32 Practice Lab Session - User & Group Creation

Lecture 33 Managing User Account

Lecture 34 Usermod Command

Lecture 35 Overview of shadow file

Lecture 36 Understanding Password Aging Policy

Lecture 37 Lab on Password aging policy using Chage Command

Section 6: Controlling Access to files with ACLs

Lecture 38 Access Control List Concepts

Lecture 39 Set ACLs on files

Lecture 40 Default ACL

Lecture 41 Practice Lab Session - Set ACL on Files

Lecture 42 Practice Lab Session - Set ACL on Directories

Lecture 43 Lab - Mask to limit the set of permissions

Lecture 44 Lab - default acl

Lecture 45 Practice Exercise on ACL

Section 7: visudo

Lecture 46 Overview of sudo access

Lecture 47 Aliases in sudoers file

Lecture 48 sudoers file

Lecture 49 Examples of sudo

Lecture 50 Practice Lab Session 1

Lecture 51 Practice Lab Session 2

Lecture 52 Practice Lab Session 3

Section 8: Bash profile, Variables & Standard IO Redirecting

Lecture 53 User’s Home Directory

Lecture 54 .bash_profile, .bashrc & .bash_logout

Lecture 55 How to set PATH in .bash_profile file

Lecture 56 Practice Lab Session

Lecture 57 Bash Variables

Lecture 58 Enviornment Variables

Lecture 59 System Variables

Lecture 60 Standard Input & Output Redirections

Section 9: Linux Crontab

Lecture 61 Overview about Crontab format

Lecture 62 Scheduling a job for a specific time-1

Lecture 63 Scheduling a job for a specific time-2

Lecture 64 Lab session on Linux Crontab

Section 10: OpenSSH & telnet

Lecture 65 Overview about OpenSSH

Lecture 66 Config file sshd_conf -1

Lecture 67 Config file sshd_conf -2

Lecture 68 Config file sshd_conf -3

Lecture 69 Practice Lab Session -1

Lecture 70 Practice Lab Session -2

Lecture 71 telnet

Lecture 72 Lab session on telnet configuration

Section 11: Process Management

Lecture 73 Process Management

Lecture 74 fg & bg process

Lecture 75 process stats

Lecture 76 Practice Lab Session -1

Lecture 77 Practice Lab Session - 2

Lecture 78 Practice Lab Session - 3

Section 12: Disk Partitions, fdisk & RAID Configuration

Lecture 79 Partitioning a Disk

Lecture 80 MBR Partitioning Scheme

Lecture 81 Primary & Extended Partitions

Lecture 82 GPT Partitioning Scheme

Lecture 83 Managing Partitions with Parted

Lecture 84 Creating a file system

Lecture 85 Scan new scsi disks in Linux Virtual Machine

Lecture 86 Introduction to RAID

Lecture 87 S/W & H/W Raid

Lecture 88 RAID 0

Lecture 89 RAID 1

Lecture 90 RAID 5

Lecture 91 RAID 6

Lecture 92 RAID 1+0 or 0+1

Lecture 93 Lab-1 configure RAID 0 (striping)

Lecture 94 Lab-2 Configure RAID 5 (Disk Striping with single distributed parity)

Lecture 95 How to recover a failed disks from RAID

Section 13: Logical volume Manager Administration-LVM

Lecture 96 Overview of LVM

Lecture 97 Components of LVM

Lecture 98 LE to PE Mapping

Lecture 99 linear logical volumes

Lecture 100 striped logical volumes

Lecture 101 mirrored logical volumes

Lecture 102 Lab 1 - Volume Group Creation

Lecture 103 Lab 2 - Extend a FileSystem

Lecture 104 Lab 3 -extend a vg and lv

Lecture 105 Lab 4 - Create a striped LV

Lecture 106 Lab 5 - Create a mirrored lv

Lecture 107 Lab 6 - remove a vg

Lecture 108 Lab 7 - vgexport & vgimport commands

Lecture 109 VG Configuration file

Lecture 110 Metadata in physical Volumes

Lecture 111 Recovering Metadata/Failed disks from LVM

Section 14: RPM (Red Hat Package Manager)

Lecture 112 Overview of Red Hat Package Manager (RPM)

Lecture 113 Lab -1

Lecture 114 Lab -2

Section 15: YUM Configuration

Lecture 115 Overview about Yum

Lecture 116 Why yum was made?

Lecture 117 Configure & Install Yum Server

Lecture 118 Lab-1

Lecture 119 xml.gz files in Yum

Lecture 120 Client side configuration in Yum

Lecture 121 Yum History Command

Lecture 122 Reverting and Repeating Transactions

Section 16: Managing Server Firewalls

Lecture 123 Firewall concepts

Lecture 124 About nftables, features and advantages of firewalld

Lecture 125 Firewalld components, pre-defined zones

Lecture 126 How packet flows through firewall

Lecture 127 Check firewalld services - Lab Session

Lecture 128 Adding and Removing Services & Port from Firewall Server - Lab Session

Lecture 129 Add Services Permanently in Firewalld - Lab Session

Lecture 130 Add HTTP Service in firewalld - Lab Session

Lecture 131 Port forwarding - Lab Session

Lecture 132 Conceptual discussion about Masquerading, Packet Flow in Firewalld

Lecture 133 Masquerading with Port Forwarding - Lab Session

Lecture 134 About Rich Rules in Firewalld

Lecture 135 Specifically allow a Server using Rich Rules - Lab Session

Lecture 136 Allow Telnet Port, SSH with log prefix using Rich Rule - Lab Session

Lecture 137 Accept, Reject, Drop - Lab Session

Section 17: Linux Minor OS Upgrade

Lecture 138 OS Upgrade - RHEL 7.1 to 7.2 (Part 1)

Lecture 139 OS Upgrade - RHEL 7.1 to 7.2 (Part 2)

Section 18: FTP - File Transfer Protocol on Linux

Lecture 140 Overview of FTP Server

Lecture 141 configuration file of vsftp

Lecture 142 Practice Lab - 1 (Configuring ftp server)

Lecture 143 Practice Lab - 2

Lecture 144 Practice Lab Session - 3

Lecture 145 Practice Lab Session - 4

Section 19: NFS (Network File Systems) configuration on Linux

Lecture 146 Overview about NFS Server

Lecture 147 NFS (Network File Systems) - 2

Lecture 148 Important Services in nfs

Lecture 149 how nfs works

Lecture 150 Configurations files

Lecture 151 Practice Lab Session 1

Lecture 152 Practice Lab Session 2

Lecture 153 Practice Lab Session 3

Section 20: Kickstart Server - Automating Installation

Lecture 154 Overview of Kickstart Server

Lecture 155 Features of Kickstart Server

Lecture 156 Theoritical Steps to configure Kickstart Server

Lecture 157 Graphical Mode to configure kickstart config file

Lecture 158 Kickstart config file - 1

Lecture 159 Kickstart config file - 2

Lecture 160 Lab1

Lecture 161 Lab2

Lecture 162 Lab3

Lecture 163 Lab4

Lecture 164 Lab5

Lecture 165 Lab6

Section 21: Apache Web Server Administration

Lecture 166 Introduction Apache Web Server

Lecture 167 Basic Setup of Apache Web Server

Lecture 168 Apache Main Configuration file - 1

Lecture 169 Apache Main Conf File - 2

Lecture 170 Launching a simple web page

Lecture 171 Order (Allow, Deny)

Lecture 172 Indexes

Lecture 173 Practice Lab Session on Indexes

Lecture 174 .htaccess - Security Restrictions on directories

Lecture 175 Practice Lab Session

Lecture 176 Secure a Web Server

Lecture 177 Encrypted Communication using SSL (443 port)

Lecture 178 Practice Lab Session

Section 22: DNS (Domain Name System)

Lecture 179 Overview about DNS

Lecture 180 Understanding root & top level domains hierarchy

Lecture 181 How dns works?

Lecture 182 Practice Lab Session - 1

Lecture 183 Practice Lab Session - 2

Lecture 184 Practice Lab Session - 3

Lecture 185 Troubleshooting of dns issues

Section 23: Postfix Mail Server Configuration

Lecture 186 How email flows from sender to receiver

Lecture 187 Mail Service Components

Lecture 188 Configure Linux Mail Server (main.cf)

Lecture 189 mynetworks - parameter

Lecture 190 mydestination - parameter

Lecture 191 Lab on mydestination parameter

Lecture 192 Postfix mail flow

Lecture 193 Practice Lab Session

Lecture 194 About Dovecot, Imap & pop3

Lecture 195 Configuring Dovecot

Lecture 196 Thunderbird - mail user agent for accessing mails

Section 24: Samba Server

Lecture 197 Overview of Samba Server

Lecture 198 How Samba Server works?

Lecture 199 CIFS File System

Lecture 200 Lab 1

Lecture 201 Lab 2

Lecture 202 Lab 3

Lecture 203 Lab 4

Lecture 204 Lab 5

Section 25: Securing & Hardening a Linux System

Lecture 205 Linux Physical Security

Lecture 206 How to break root password?

Lecture 207 Securing the grub menu

Lecture 208 Reset root password from rescue mode

Lecture 209 BIOS Protection

Lecture 210 General Security

Lecture 211 Keep your system updated

Lecture 212 Turn off IPv6

Lecture 213 Disable USB Stick to detect

Lecture 214 Restrict Users to Use Old Passwords

Lecture 215 Check Password Expiration of a User

Lecture 216 Password Expiration - Lab Session

Lecture 217 Verify accounts for empty password

Lecture 218 Verify accounts with "Zero" UID

Lecture 219 Review logs regularly

Lecture 220 Keep /boot as read only

Section 26: Networking Configuration in Red Hat Linux 7

Lecture 221 Linux Network Configuration

Lecture 222 Networking Configuration in Red Hat Linux 7

Lecture 223 Routing Table

Lecture 224 Lab 1 Routing Table

Lecture 225 Lab 2 Routing Table

Section 27: Linux Find Command

Lecture 226 Basic find commands for finding files

Lecture 227 Lab-1

Lecture 228 Lab-2

Lecture 229 Lab-3

Lecture 230 Lab-4

Lecture 231 Lab-5

Section 28: Performance Monitoring in Linux

Lecture 232 Introduction about Linux Performance Monitoring

Lecture 233 CPU - Context Switch

Lecture 234 CPU - run queue,utilization & load average

Lecture 235 Memory & Swap Management in Linux

Lecture 236 Disk IO Operations in Linux Servers

Lecture 237 Unerstanding Network monitoring

Lecture 238 top command - 1

Lecture 239 top command - 2

Lecture 240 vmstat command - 1

Lecture 241 vmstat command - 2

Section 29: Managing Kernel Modules

Lecture 242 About Kernel Modules

Lecture 243 Practice Lab Session - 1

Lecture 244 Practice Lab Session - 2

Section 30: Troubleshooting Boot Problems based on RHEL6

Lecture 245 Linux Booting Process

Lecture 246 Runlevels in Booting Process

Lecture 247 Lab on Basic System Recovery (Initramfs file missing/Corrupted)

Lecture 248 Lab on Basic System Recovery (Grub related issues -1)

Lecture 249 Lab on Basic System Recovery (Grub related issues -2)

Lecture 250 Lab on MBR corruption (Stage 1 Grub)- basic System Recovery

Lecture 251 Lab on MBR Corruption - Part 2

Lecture 252 Basic System Recovery (Critical files are missing like mount binary)

Lecture 253 Lab on Basic System Recovery (Critical files are missing like mount binary etc)

Section 31: SELinux Security

Lecture 254 Introduction - SELinux

Lecture 255 SELinux Security Concepts

Lecture 256 SELinux Modes

Lecture 257 Practice Lab Session -1

Lecture 258 Practice Lab Session -2

Lecture 259 Changing SELinux Contexts

Lecture 260 SELinux Booleans

Lecture 261 Practice Lab Session - 3

Lecture 262 Audit logs & Troubleshooting SELinux

Section 32: Red Hat Enterprise Linux 7

Lecture 263 Overview & features of Red Hat Linux 7

Lecture 264 Features of systemd - 1

Lecture 265 Features of Systemd -2

Lecture 266 RHEL7 vs RHEL6 - Part1

Lecture 267 RHEL7 vs RHEL6 - Part2

Lecture 268 RHEL7 vs RHEL6 - Part3

Lecture 269 Practice Lab Session - 1

Lecture 270 Practice Lab Session - 2

Lecture 271 Practice Lab Session - 3

Lecture 272 Rescue Mode in RHEL 7

Lecture 273 Lab session on booting into Rescue Mode

Lecture 274 Emergency Mode in RHEL 7

Lecture 275 Lab session on booting into Emergency Mode

Lecture 276 Troubleshooting mode

Lecture 277 Resetting the root passwd

Section 33: Troubleshooting Boot Problems based on RHEL7

Lecture 278 initramfs file is missing

Lecture 279 grub conf is missing

Lecture 280 mbr is corrupted

Lecture 281 fstab file missing or bad entry

Section 34: GRand Unified Boot Loader (Grub2)

Lecture 282 Overview of Grub2

Lecture 283 Grub Configuration file

Lecture 284 Features of grub2

Lecture 285 Boot from grub command prompt - Lab 1

Lecture 286 Boot from grub command prompt - Lab 2

Lecture 287 Modify grub configuration file - Lab 3

Lecture 288 How to set a password at grub

Section 35: Kdump Configuration in RHEL 7

Lecture 289 Kdump Configuration in RHEL 7

Lecture 290 Lab

Section 36: Red Hat Satellite 6.2

Lecture 291 Overview of Red hat Satellite Server 6.2

Lecture 292 Prerequisites for Satellite Server

Lecture 293 Subscription with Red Hat Network

Lecture 294 Installing Satellite using offline repo

Lecture 295 Configuring Satellite Server

Lecture 296 Registering the Satellite Server in RHN

Lecture 297 Downloading & Uploading manifest

Lecture 298 Create Repos

Lecture 299 Activation key & registering the client with Satellite Server

Section 37: Backup & Restore

Lecture 300 Overview of Backup

Lecture 301 Types of backup

Lecture 302 Dump command

Lecture 303 Practice Lab Session

Lecture 304 Practice Lab Session 2

Section 38: Advanced Linux Commands

Lecture 305 dig command

Lecture 306 traceroute command

Lecture 307 rsync command

Lecture 308 ssh, scp & sftp command

Lecture 309 find, grep & locate command

Lecture 310 df, du & lsof commands

Lecture 311 ps, top & who commands

Lecture 312 cut, sort commands

Lecture 313 vim command

Lecture 314 sed & awk command

Lecture 315 tar, gzip & bzip2 commands

Lecture 316 useradd & userdel commands

Lecture 317 usermod, groupadd & groupdel

Lecture 318 chage, chroot & chown commands

Lecture 319 mount, umount, fdisk & mkfs commands

Lecture 320 proc command

Lecture 321 uptime, free & uname commands

Lecture 322 systemd commands

Lecture 323 LVM Commands

Section 39: Introduction Bash Shell

Lecture 324 What is Linux Shell?

Lecture 325 Types of shells available in Linux

Lecture 326 About Shell Scripting

Lecture 327 Overview of Bash Shell

Lecture 328 .bash_profile, .bashrc & .bash_logout

Lecture 329 Practice Lab Session - 1

Lecture 330 Practice Lab Session - 2

Lecture 331 Create a simple shell script

Lecture 332 Debug a script

Section 40: The Shell Variables & Environment

Lecture 333 Bash Variables

Lecture 334 Environmental Variables

Lecture 335 System Variables

Lecture 336 Practice Lab Session

Lecture 337 Script to collect system information using echo command only

Lecture 338 Quoting and their types

Lecture 339 The Backslash (/)

Lecture 340 Getting User Input Via Keyboard

Lecture 341 read command

Lecture 342 Use of IFS

Section 41: Arithmetic Operations

Lecture 343 Performing Arithmetic Operations

Lecture 344 Create an Integer Variable

Lecture 345 Create the Constants Variable

Lecture 346 Path name expansions

Lecture 347 Wildcards

Lecture 348 Aliases

Section 42: Industrial Project to Automate the Pre-validation report

Lecture 349 Overview of the Industrial Project

Lecture 350 Bash Colors

Lecture 351 Lab Session on bash colors

Lecture 352 Create an Automation Script - 1

Lecture 353 Create an Automation Script - 2

Lecture 354 Create an Automation Script - 3

Lecture 355 Create an Automation Script - 4

Section 43: Conditional Statements (Decision Making)

Lecture 356 Overview of conditional execution

Lecture 357 if else statement syntax

Lecture 358 Lab Session on if..else..

Lecture 359 Lab Session on if..elif..else..statements

Lecture 360 test command

Lecture 361 Lab session on test conditions - 1

Lecture 362 Lab session on test conditions - 2

Lecture 363 exit status of a command

Lecture 364 Lab on exit status - 1

Lecture 365 Lab on exit status - 2

Lecture 366 Numeric, String comparison

Lecture 367 File attributes comparison

Lecture 368 command line arguments

Lecture 369 positional parameters via special shell variable $1, $2, $3,…,$9.

Section 44: Bash Loops

Lecture 370 for loop statement

Lecture 371 Lab Session on for loop

Lecture 372 Conceptual understanding of for loop

Lecture 373 for loop using C like syntax

Lecture 374 for loop reading from a text file

Lecture 375 for loop using command-line arguments

Lecture 376 Chessboard using nested loop statement

Lecture 377 While loop statement

Lecture 378 Lab Session - read a text file line-by-line or using IFS

Lecture 379 infinite while loop

Lecture 380 Case Statement

Lecture 381 Automation Tool Using Case Statement -1

Lecture 382 Automation Tool Using Case Statement -2

Section 45: Shell Redirections

Lecture 383 Input Output Redirection in Linux

Lecture 384 Lab Session on redirection

Lecture 385 Pipelines in Linux

Lecture 386 tee command

Lecture 387 file descriptor (fd) to file for output

Lecture 388 file descriptor (fd) to file for input

Lecture 389 file descriptor (fd) for reading & writing

Section 46: Functions

Lecture 390 Defining functions

Lecture 391 Displaying functions

Lecture 392 Nested functions

Lecture 393 Lab Session - Writing Functions

Lecture 394 Local & Global Variables

Lecture 395 return statement

Lecture 396 Practice Lab Session

Section 47: AWK

Lecture 397 Introduction AWK

Lecture 398 Pattern matching using awk

Lecture 399 Awk preprocessing

Lecture 400 Awk postprocessing

Section 48: SED - Stream Editor

Lecture 401 About Sed

Lecture 402 Replacing or substituting string

Lecture 403 Changing the slash (/) delimiter

Lecture 404 Replacing string on a specific line number or matches a pattern

Lecture 405 Delete or add a line after or before a match

Lecture 406 Last Lecture

Section 49: Linux Interview Questions And Answers

Graduate Students and also those who are in a job in Linux Administration & want to get hands-on practical experience on troubleshooting.,IT professionals across a broad range of disciplines who need to perform essesntial administration tasks.