Linux Diagnostics And Troubleshooting
This course is aimed at senior system administrators who wish to learn more about troubleshooting, various assignment
Linux Diagnostics And Troubleshooting udemy course free download
This course is aimed at senior system administrators who wish to learn more about troubleshooting, various assignment
Senior system administrators who are interested in troubleshooting more are the target audience for this course.
Every section of this course has a different set of quizzes, and there is also many project lab assignment that will help you demonstrate what you have learned.
Linux Diagnostics And Troubleshooting
Course Content
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
Quiz - MCQ
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
Quiz - MCQ
Identifying Hardware Issues
Identify various hardware and their problems
Hardware Error Reporting using mcelog and rasdaemon
Memory Testing using memtest86+ package
Managing Kernel Modules
Loading and unloading modules
Managing module options
Troubleshooting to disable MSI-X interrupt handling in the driver
Quiz - MCQ
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
Quiz - MCQ
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
Quiz - MCQ
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
Quiz - MCQ
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
Assignment - This lab project assignment aims to explore some common Red Hat Linux boot issues and provide solutions to resolve them.
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
