Linux Troubleshooting Course with Practical Examples

Imran Afzal, Staff Systems Engineer / Manager

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77 Lessons (12h 52m)
    • 1. Course Promo Video

      1:19
    • 2. Course Syllabus

      7:01
    • 3. Welcome to Troubleshooting Best Practice

      2:37
    • 4. Follow Policies and Standards

      3:38
    • 5. Documentation Or Ticketing Process

      5:21
    • 6. Patience To Work with the Users Group

      6:30
    • 7. Get Online Help

      4:39
    • 8. Understanding the Issue Before Making a Decision

      2:36
    • 9. Involve Vendors if Needed

      3:15
    • 10. Log Monitor

      3:21
    • 11. Be Honest and Ask Questions

      3:18
    • 12. Welcome to lab setup

      2:48
    • 13. What is VirtualBox

      1:52
    • 14. Download and Install VirtualBox

      3:32
    • 15. Creating First Virtual Machine

      5:20
    • 16. Linux CentOS Installation

      23:24
    • 17. Welcome to Conceptual Troubleshooting

      0:09
    • 18. Who is who

      4:23
    • 19. Cannot Access Server

      6:35
    • 20. Cannot Install OS

      4:33
    • 21. VM Running Slow

      4:50
    • 22. Welcome to System Access Troubleshooting

      0:09
    • 23. Server is Not reachable

      14:08
    • 24. Cannot Connect to a Website or an Application

      12:55
    • 25. Cannot SSH as Root or Other User

      14:12
    • 26. Firewall

      6:29
    • 27. Terminal or Client is Not Working

      4:43
    • 28. Troubleshooting Putty Connection

      11:41
    • 29. Welcome to Filesystem Troubleshooting

      0:09
    • 30. Cannot CD Into a Directory

      18:53
    • 31. Cannot Open a File Or Run a Script

      10:19
    • 32. Having Trouble Finding Files and Directories

      10:28
    • 33. Cannot Create Links

      18:22
    • 34. Cannot Write to a File

      12:21
    • 35. Cannot Delete, Copy, Rename or Move a File

      17:56
    • 36. Cannot Change File Permissions Ownership

      15:01
    • 37. Disk Space Full

      22:21
    • 38. Add Disk and Create Standard Partition

      12:19
    • 39. Add Disk and Create LVM Partition

      12:26
    • 40. Extend Disk with LVM

      14:10
    • 41. How to Delete Old Files

      7:27
    • 42. Script to Delete Old Files

      10:52
    • 43. Filesystem Corruption

      21:21
    • 44. fstab Corruption

      16:56
    • 45. Welcome to System Administration Troubleshooting

      0:09
    • 46. Running Out of Memory

      32:14
    • 47. Add Swap Space

      12:59
    • 48. System Rebooted Or Process Restarted

      13:10
    • 49. Unable to get an IP Address

      19:08
    • 50. IP Address Assigned but not Reachable

      20:37
    • 51. Having Trouble Using vi Editor

      9:53
    • 52. Cannot Run Certain Commands

      14:59
    • 53. Cannot Change Password

      13:16
    • 54. User Has No Home Directory

      13:16
    • 55. How to Change Every Instance of a Word in a File

      5:17
    • 56. How to Use sed Command

      6:30
    • 57. How to Kill a Process, User or Terminal

      9:55
    • 58. Recover Root Password

      5:26
    • 59. Sosreport

      6:34
    • 60. List of Users Logged in by Date

      15:30
    • 61. System is Running Slow

      33:54
    • 62. Rollback Updates and Patches

      14:22
    • 63. Welcome to System Recovery

      0:09
    • 64. Recover Virtual System

      9:03
    • 65. Recover Physical System

      3:51
    • 66. Disaster Recovery

      6:20
    • 67. Welcome to Bonus Section

      0:09
    • 68. Introduction to File System

      5:14
    • 69. File Ownership Commands

      11:35
    • 70. Files and Directory Permissions

      12:57
    • 71. System Log Monitoring

      11:08
    • 72. Hard and Soft Link

      12:28
    • 73. Curl and ping

      9:56
    • 74. Programs and Service Management

      17:35
    • 75. Processes and Jobs

      19:38
    • 76. New network command

      3:52
    • 77. Difference Between Linux 5, 6 and 7

      14:45

About This Class

Maintain a reliable and highly available Linux server infrastructure, and reduce costly downtime. In this Linux troubleshooting training course, you gain the expertise to effectively diagnose and fix common and complex Linux server configuration and administrations issues, and learn to apply those skills in production environment

Linux Troubleshooting Course

Section 1 – Introduction and Course Overview

• What is this course about

• Syllabus Overview

• Download Syllabus

Section 2 – Troubleshooting Best Practices

• Follow Policies and Standards

• Documentation or Ticketing Process

• Patience To Work With the Users / Group

• Get Online Help

• Understanding the Issue Before Making a Decision

• Involve Vendor If Needed

• Log Monitor

• Be Honest and Ask Questions

Section 3 - Lab Setup

• What is VirtualBox?

• Installing Oracle VirtualBox

• Creating First Virtual Machine

• Linux Installation

Section 4 - Conceptual Troubleshooting

• Who is Who?

• Cannot Access Server

• Cannot Install Linux

• Linux Virtual Machine Running Slow

Section 5 - System Access Troubleshooting

• Server is Not Reachable

• Cannot Connect to a Website or an Application

• Cannot SSH as root or a Specific User

• Firewall Issue

• Terminal Client is not working

• Cannot Connect using Putty to a VirutalBox VM

Section 6 - FileSystem Troubleshooting

• Cannot cd into a Directory

• Cannot Open a File or Run a Script

• Having Trouble Finding Files and Directories

• Cannot Create Links

• Cannot Write to a File

• Cannot Delete, Copy, Move or Rename a File

• Cannot Change File Permissions or View Other Users Files

• Disk Space Full or Add More Disk Space

• Add Disk and Create Standard Partition

• Add Disk and Create Standard Partition

• Add Disk and Create LVM Partition

• Extend Disk with LVM

• How to Delete Old Files

• FileSystem is Corruption

• Corruption in /etc/fstab

• Script to Delete Old Files

• Handouts

Section 7 - System Administration Troubleshooting

• Running Out of Memory

• Add Swap Space

• System Rebooted or Process Restarted

• Unable to get IP Address

• IP Assigned but not Reachable

• Having Trouble using vi Editor

• Cannot Run Certain Commands

• Cannot Change Password

• User Account has no Home Directory

• How to Change Every Instance of a Word in a File

• How to Use sed Command

• How to Kill a User Terminal or Process

• Recover Root Password

• SOS Report

• List of Users Logged in by Date

• System is Running Slow

Section 8 - System Recovery

• Recover Virtual System

• Recover Physical System

• Disaster Recovery

Section 9 - Bonus Section

• What is FileSystem

• File Ownership Commands (chown, chgrp)

• Files and Directory Permissions (chmod)

• System Logs Monitor (/var/log)

• Soft and Hard Links

• curl and ping commands

• Programs and Service Management

• Processes and Jobs (systemctl, ps, kill, top, crontab, at)

• New Network Commands

• Script to Delete Old Files

• Difference Between CentOS/Redhat 5, 6 and 7