Linux Troubleshooting Course with Practical Examples

Linux Troubleshooting Course with Practical Examples
Linux Troubleshooting Course with Practical Examples
English | MP4 | AVC 1280×720 | AAC 44KHz 2ch | 12.5 Hours | 5.44 GB

Linux Troubleshooting and Administration

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
Table of Contents

Introduction and Course Overview
1 Syllabus Overview
2 Download Syllabus
3 Thank You

Troubleshooting Best Practices
4 Welcome to Troubleshooting Best Practices
5 Follow Policies and Standards
6 Documentation or Ticketing Process
7 Patience To Work With the Users Group
8 Get Online Help
9 Understanding the Issue Before Making a Decision
10 Involve Vendor If Needed
11 Log Monitor
12 Be Honest and Ask Questions

Lab Setup
13 Welcome to Lab Setup
14 What is Virtual Box
15 Installing Oracle VirtualBox
16 Creating First Virtual Machine
17 Linux Installation

Conceptual Troubleshooting
18 Welcome to Conceptual Troubleshooting
19 Who is Who
20 Cannot Access Server
21 Cannot Install Linux
22 Linux Virtual Machine Running Slow

System Access Troubleshooting
23 Welcome to System Access Troubleshooting
24 Server is Not Reachable
25 Cannot Connect to a Website or an Application
26 Cannot SSH as root or a Specific User
27 Firewall Issue
28 Terminal Client is not working
29 Cannot Connect using Putty to a VirutalBox VM

FileSystem Troubleshooting
30 Welcome to FileSystem Troubleshooting
31 Add Disk and Create Standard Partition
32 Add Disk and Create LVM Partition
33 Extend Disk with LVM
34 How to Delete Old Files
35 Script to Delete Old Files
36 FileSystem is Corruption
37 Corruption in etcfstab
38 Handouts
39 Cannot cd into a Directory
40 Cannot Open a File or Run a Script
41 Having Trouble Finding Files and Directories
42 Cannot Create Links
43 Cannot Write to a File
44 Cannot Delete, Copy, Move or Rename a File
45 Cannot Change File Permissions or View Other Users Files
46 Disk Space Full or Add More Disk Space

System Administration Troubleshooting
47 Welcome to System Administration Troubleshooting
48 User Account has no Home Directory
49 How to Change Every Instance of a Word in a File
50 How to Use sed Command
51 How to Kill a User Terminal or Process
52 Recover Root Password
53 SOS Report
54 List of Users Logged in by Date
55 System is Running Slow
56 Running Out of Memory
57 Add Swap Space
58 System Rebooted or Process Restarted
59 Unable to get IP Address
60 IP Assigned but not Reachable
61 Having Trouble using vi Editor
62 Cannot Run Certain Commands
63 Cannot Change Password

System Recovery
64 Welcome to System Recovery
65 Recover Virtual System
66 Recover Physical System
67 Disaster Recovery

Additional Resources
68 Welcome to Additional Resources
69 New Network Command
70 Difference Between CentOSRedhat 5, 6 and 7
71 Introduction to FileSystem
72 File Ownership Commands (chown, chgrp)
73 Files and Directory Permissions (chmod)
74 System Logs Monitor (varlog)
75 Soft and Hard Links
76 curl and ping commands
77 Programs and Service Management
78 Processes and Jobs (systemctl, ps, kill, top, crontab, at)