Linux Administration with Advance Troubleshooting Skills

Linux Administration with Advance Troubleshooting Skills - Printable Version

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Linux Administration with Advance Troubleshooting Skills - AD-TEAM - 11-25-2024

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Linux Administration with Advance Troubleshooting Skills
.MP4, AVC, 1000 kbps, 1280x720 | English, AAC, 128 kbps, 2 Ch | 22.9 hours | 5.13 GB
Instructor: Shikhar Verma

Start on-demand career as a Linux Server Admin and learn from IT professionals with live Environment Sessions.

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.

Linux basic concepts,Introduction & History of Unix/Linux

Introduction to Unix
History of UNIX
What is LINUX
History of Linux
LINUX Distributions
Unix File System

Linux Commands Tutorials

Lecture on various commands with proper explanation with examples on 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 etc

Bash Variables & Standard Input output Redirecting

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
Lab

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
TROUBLESHOOTING

Permissions 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 real IT industry environment.

Linux Crontab

Overview of Linux Crontab & its format
Schedule a job for a specific period of time
Schedule a job for more then one instance (e.g. twice a day)
Schedule a job for specific range of time
Schedule a job every weekday during working hours
how to view crontab entries?
Schedule a job for every minute using cron

Linux 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 size

OpenSSH

Overview of OpenSSH
What Are Some Of The OpenSSH Features?
OpenSSH options are controlled through the /etc/ssh/sshd_config file
Lab Session

Telnet

Overview about telnet
Configuration of telnet server on Linux
Xinetd Service

Process 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
Lab

Kernel 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 deivce like lan
Lab

Disk 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 different level of Raids like (0,1,5,6 etc)
Lab Sessions

Logical 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 disk

RPM (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 any RPM package.

YUM (Yellowdog Updater, Modified)

Overview of YUM
Configuration& and installation of yum on Red Hat Linux Server
Lab-1
Lab-2

File Transfer Protocol on RHEL 7

Overview of FTP Server
Installation and configuration of FTP Server
Lab-1
Lab-2

Apache 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 /etc/hosts file
DocumentRoot
ErrorLog
Listen
Create your HTML documents
Start the Web Server
Access the web site
Local access
Internal & external access
Summary of basic setup

DNS (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 browser

Network File System (NFS) on RHEL 7

Overview of NFS Server
Installation and configuration of NFS Server
Lab-1
Lab-2

Automating 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 network

How to find HBA details & Storage Connectivity & Scan new disks/luns on Red Hat Linux Physical Server

How's HBA/FC's are connected to the Linux Physical Server
Lab on Live production Environment
How storage disks are connected to the server
What all the paths of a disk to access the SAN Storage via round robin request
Lab on understanding the disks paths via different HBA/FC Card.
How to scan new luns coming from storage on Red Hat Linux

Networking Concepts in RHEL 7

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
Lab

Linux Performance Monitoring

Introduction about Performance monitoring in Linux
Important four subsystems that needs to be monitored.

1. CPU
2. Memory
3. I/O
4. 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

Troubleshooting Linux Boot Problems in Red Hat Linux 6/7 (Basic System Recovery) - Advanced Level

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, incorrect entry in fstab etc)
Lab on Basic System Recovery (Critical files are missing like mount binary, incorrect entry in fstab etc)

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 RHEL7
Resetting the Root Password Using an Installation Disk
Resetting the Root Password Using rd.break

Kdump configuration on RHEL 7

Overview of kdump
How to enable Kdump on RHEL 7
Lab Session

Red 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 enviornment requirement
Creating Activation
Registering server (Red Hat Satellite client)
Recap

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