English | MP4 | AVC 1280×720 | AAC 44KHz 2ch | 17.5 Hours | 7.54 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
What you’ll learn
- Troubleshoot IT and Linux related issues with effective tools and techniques
- Save time when troubleshooting is done with the correct approach
- Manage your company’s IT environment and respond to critical issues smoothly
- Diagnose and Repair Common Networking and Filesystem Errors
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 Slides
6 Follow Policies and Standards
7 Documentation or Ticketing Process
8 Patience To Work With the Users Group
9 Get Online Help
10 Understanding the Issue Before Making a Decision
11 Involve Vendor If Needed
12 Log Monitor
13 Be Honest and Ask Questions
Lab Setup
14 Welcome to Lab Setup
15 What is Virtual Box
16 Installing Oracle VirtualBox
17 Creating First Virtual Machine
18 Linux Installation
19 Linux CentOS8 Installation (Optional)
20 Slides
Conceptual Troubleshooting
21 Welcome to Conceptual Troubleshooting
22 Who is Who
23 Cannot Access Server
24 Cannot Install Linux
25 Linux Virtual Machine Running Slow
26 Slides
System Access Troubleshooting
27 Welcome to System Access Troubleshooting
28 Server is Not Reachable
29 Cannot Connect to a Website or an Application
30 Cannot SSH as root or a Specific User
31 Firewall Issue
32 Terminal Client is not working
33 Cannot Connect using Putty to a VirutalBox VM
34 Slides
FileSystem Troubleshooting
35 Welcome to FileSystem Troubleshooting
36 Add Disk and Create Standard Partition
37 Add Disk and Create LVM Partition
38 Extend Disk with LVM
39 How to Delete Old Files
40 Script to Delete Old Files
41 FileSystem is Corruption
42 Corruption in etcfstab
43 Handouts
44 Slides
45 Cannot cd into a Directory
46 Cannot Open a File or Run a Script
47 Having Trouble Finding Files and Directories
48 Cannot Create Links
49 Cannot Write to a File
50 Cannot Delete, Copy, Move or Rename a File
51 Cannot Change File Permissions or View Other Users Files
52 Disk Space Full or Add More Disk Space
System Administration Troubleshooting
53 Welcome to System Administration Troubleshooting
54 User Account has no Home Directory
55 How to Change Every Instance of a Word in a File
56 How to Use sed Command
57 How to Kill a User Terminal or Process
58 Recover Root Password
59 SOS Report
60 List of Users Logged in by Date
61 System is Running Slow
62 Rollback Updates and Patching
63 Slides
64 Running Out of Memory
65 Add Swap Space
66 System Rebooted or Process Restarted
67 Unable to get IP Address
68 IP Assigned but not Reachable
69 Having Trouble using vi Editor
70 Cannot Run Certain Commands
71 Cannot Change Password
System Recovery
72 Welcome to System Recovery
73 Recover Virtual System
74 Recover Physical System
75 Disaster Recovery
76 Slides
Additional Resources
77 Welcome to Additional Resources
78 New Network Command
79 Redhat Installation – optional
80 Difference Between CentOSRedhat 5, 6 and 7
81 Absolute and Relative Paths
82 Wildcards
83 Combining and Splitting Files
84 File Maintenace Commands
85 Files and Directory Permissions
86 Filter-Text Processor Commands
87 Environment Variable
88 Introduction to FileSystem
89 Monitor Users
90 sed Command
91 System Log Monitoring – Additional
92 System Monitoring Commands
93 Advance Package Management
94 File Transfer Commands
95 Rollback Updates and Patches
96 Securing Linux Machine – OS Hardening
97 Add Swap Space
98 Extend Disk with LVM
99 File Ownership Commands (chown, chgrp)
100 File System Check
101 System Backup
102 Files and Directory Permissions (chmod)
103 System Logs Monitor (varlog)
104 Soft and Hard Links
105 curl and ping commands
106 Programs and Service Management
107 Processes and Jobs (systemctl, ps, kill, top, crontab, at)
Bonus
108 Welcome to Bonus Section
109 Discounted Course Coupons
110 Other Services
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