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Linux Diagnostics And Troubleshooting

This course is aimed at senior system administrators who wish to learn more about troubleshooting
4.4
☆☆☆☆☆ 4.4/5
(726 reviews)
4,648 students
Created by
Shikhar Verma • 30,000+ Students Worldwide

9.0

CourseMarks Score®

8.1

Freshness

8.7

Feedback

9.6

Content

Detailed Analysis »

This course is aimed at senior system administrators who wish to learn more about troubleshooting
Go to class »
Platform: Udemy
Price: check current price
Video: 10h 25m
Language: English
Next start: On Demand

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Detailed Analysis

CourseMarks Score®

9.0 / 10

CourseMarks Score® helps students to find the best classes. We aggregate 18 factors, including freshness, student feedback and content diversity.

Freshness Score

8.1 / 10
This course was last updated on 10/2020.

Course content can become outdated quite quickly. After analysing 71,530 courses, we found that the highest rated courses are updated every year. If a course has not been updated for more than 2 years, you should carefully evaluate the course before enrolling.

Student Feedback

8.7 / 10
We analyzed factors such as the rating (4.4/5) and the ratio between the number of reviews and the number of students, which is a great signal of student commitment.

New courses are hard to evaluate because there are no or just a few student ratings, but Student Feedback Score helps you find great courses even with fewer reviews.

Content Score

9.6 / 10
Video Score: 9.2 / 10
The course includes 10h 25m video content. Courses with more videos usually have a higher average rating. We have found that the sweet spot is 16 hours of video, which is long enough to teach a topic comprehensively, but not overwhelming. Courses over 16 hours of video gets the maximum score.
The average video length is 5 hours 28 minutes of 195 Linux courses on Udemy.
Detail Score: 10.0 / 10

The top online course contains a detailed description of the course, what you will learn and also a detailed description about the instructor.

Extra Content Score: 9.5 / 10

Tests, exercises, articles and other resources help students to better understand and deepen their understanding of the topic.

This course contains:

0 article.
3 resources.
0 exercise.
0 test.

Table of contents

Description

  What you'll learn
  Requirements
  Who this course is for
FAQ
  Price
  Refund policy
  Scholarships
Instructor
Recommended courses

Description

Course Description

Linux Diagnostics And Troubleshooting

Introduction
•What is troubleshooting?
•Troubleshooting a login issue
•Collecting Information
•System Journal
•Troubleshoot a web server issue using the log files
•Using Red Hat Resources
•Collecting Information with SOSREPORT
•Practice Lab Session
•Troubleshoot a FTP Connectivity Issue

Monitoring Systems
•System Monitoring with Cockpit
•Performance Co-Pilot or pcp
•Centralized log server using rsyslog
•Practice Lab Session
•Intrusion detection software to monitor changes
•Advanced Intrusion Detection Environment (AIDE)
•Practice Lab Session
•System Auditing with auditd
•

Identifying Hardware Issues
•Identify various harwdare and their problems
•Hardware Error Reporting using mcelog and rasdaemon
•Memory Testing using memtest86+ package
•Manging Kernel Modules
•Loading and unloading modules
•Managing module options
•Troubleshooting to disable MSI-X interrupt handling in the driver

Troubleshooting Storage Issues
•Overview of Linux Storage Stack
•Virtual File System
•Filesystems & Device Manager
•Device Mapper Multipath
•Recovering from File System Corruption
•Checking & Repairing ext3/ext4 fs using e2fsck
•Checking & Repairing xfs fs using xfs_repair
•Recovering LVM Issues
•Practice Lab Session – using vgcfgrestore
•Migrating a Volume Group from one system to another
•Recovering Metadata in LVM
•Practice Lab Session
•Configuration of Iscsi target & Initiator
•Practice Lab Session on  iscsi target & initiator – 1
•Practice Lab Session on  iscsi target & initiator – 2

Troubleshooting RPM Issues
•Resolve package management dependency issues
•Identify & fix dependency issue
•Recover a corrupted RPM Database
•Working with transaction history using Yum command
•Reverting & repeating transaction using yum command
•Practice Lab Session

Troubleshooting a Network Issues
•Check Network Connectivity
•Scanning Network Ports using nmap
•Communicating with a remote service using nc command
•Monitoring Network traffic using iptraf-ng
•Troubleshooting a network issue (One network interface is not working properly)
•Troubleshooting tips related with device names of ethernet interface
•Disable consistent network device naming
•Overview NetworkManager
•Practice Lab Session
•Capturing Packets with tcpdump
•Practice Lab Sessions

Troubleshooting a Boot Issues
•Linux Boot process
•Booting of RHEL 7 with systemd
•Overview of Grub2
•Grub2 features
•Booting into Grub Menu
•Protect Grub by appying a password
•Lab on Basic System Recovery (Initramfs file missing/Corrupted)
•Lab on Basic System Recovery (Grub related issues like grub is missing)
•Lab on Basic System Recovery (Master Boot Record missing/corrupted)
•Rescue Modue in RHEL 7
•Practice Lab Session
•Reset the root passwd using installation disk
•Reset the root passwd using rd.break
•Repairing File System Issues at boot
•Fix issues at /etc/fstab at boot – Lab Session

Troubleshooting a Security Issues
•Troubleshooting a SELinux Issue
•Changing SELinux context
•troubleshooting ftp connectivity issue using booleans
•SELinux Audit Logs & Troubleshooting
•Overview of PAM Security
•Concepts of PAM
•PAM Modules & Configurations
•PAM Module Groups
•Control Flags in PAM
•PAM Modules
•last lecture

You will learn

✓ Linux Diagnostics And Troubleshooting
✓ To fix common issues on a Red Hat Enterprise Linux machine, using tools provided by the distribution.
✓ What is troubleshooting?
✓ Troubleshooting a login issue
✓ Troubleshoot a web server issue using the log files
✓ Troubleshoot a FTP Connectivity Issue
✓ System Monitoring with Cockpit
✓ Centralized log server using rsyslog
✓ Advanced Intrusion Detection Environment (AIDE)
✓ System Auditing with auditd
✓ Identify various harwdare and their problems
✓ Hardware Error Reporting using mcelog and rasdaemon
✓ Manging Kernel Modules
✓ Troubleshooting to disable MSI-X interrupt handling in the driver
✓ Troubleshooting Storage Issues
✓ Overview about Filesystems, Device Manager & Device Mapper Multipath
✓ Recovering from File System Corruption
✓ Migrating a Volume Group from one system to another
✓ Configuration of Iscsi target & Initiator
✓ Troubleshooting RPM Issues
✓ Recover a corrupted RPM Database
✓ Working with transaction history using Yum command
✓ Troubleshooting a Network Issues
✓ Scanning Network Ports using nmap
✓ nc & iptraf-ng commands
✓ Troubleshooting a network issue (One network interface is not working properly)
✓ Troubleshooting a Boot Issues
✓ Lab on Basic System Recovery
✓ Reset the root passwd using installation disk or rd break
✓ Troubleshooting a Security Issues
✓ Troubleshooting a SELinux Issue
✓ SELinux Audit Logs & Troubleshooting
✓ Overview of PAM Security & Concepts of PAM
✓ Various practice lab session

Requirements

• PC or Laptop with internet Connection
• A RHCSA/RHCE certification, or equivalent knowledge is required to successfully sit this course.

This course is for

• Linux Diagnostics and Troubleshooting course is aimed at senior system administrators who wish to learn more about troubleshooting.

How much does the Linux Diagnostics And Troubleshooting course cost? Is it worth it?

The course costs $15.99. And currently there is a 20% discount on the original price of the course, which was $19.99. So you save $4 if you enroll the course now.
The average price is $15.6 of 195 Linux courses. So this course is 3% more expensive than the average Linux course on Udemy.

Does the Linux Diagnostics And Troubleshooting course have a money back guarantee or refund policy?

YES, Linux Diagnostics And Troubleshooting has a 30-day money back guarantee. The 30-day refund policy is designed to allow students to study without risk.

Are there any SCHOLARSHIPS for this course?

Currently we could not find a scholarship for the Linux Diagnostics And Troubleshooting course, but there is a $4 discount from the original price ($19.99). So the current price is just $15.99.

Who is the instructor? Is Shikhar Verma • 30,000+ Students Worldwide a SCAM or a TRUSTED instructor?

Shikhar Verma • 30,000+ Students Worldwide has created 28 courses that got 12,010 reviews which are generally positive. Shikhar Verma • 30,000+ Students Worldwide has taught 53,083 students and received a 4.4 average review out of 12,010 reviews. Depending on the information available, Shikhar Verma • 30,000+ Students Worldwide is a TRUSTED instructor.

More info about the instructor,

Shikhar Verma • 30,000+ Students Worldwide

Professional system administrator and IT Trainer
Hi there, my name is Shikhar Verma And I love making complex technical topics easy to understand.
I have been in the IT Industry for more than 12 years and I had started my career as a Unix and Linux System Engineer in 2005 and currently working as solution architect in multinational company and also a professional IT trainer.
My passion is to work in an environment where my technical skills and experience is put to proper use for the prospective growth of company & his career.   
And I’m here on Udemy to teach what I know in an approachable way. I started teaching courses in 2017, and have taught over 20,000 students. I am grateful every day with being able to connect with so many students in almost every country around the world.    
Primary Skills are Linux, Red Hat Cluster, Ansible, Shell Scripting, AWS Cloud (Amazon Web Services), Linux Cluster, Perl etc

Environment:  HP Servers (Itanium/PA-RISC), Superdome 2 8s,16s & 32s, 9000/RX Series Server running HP-UX 11iv1, v2 and v3, HP P & C Class Blades Servers c7000 running HP-UX/RHEL8,7,6 etc. 
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9.0

CourseMarks Score®

8.1

Freshness

8.7

Feedback

9.6

Content

Detailed Analysis »

This course is aimed at senior system administrators who wish to learn more about troubleshooting
Go to class »
Platform: Udemy
Price: check current price
Video: 10h 25m
Language: English
Next start: On Demand

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