Linux Troubleshooting: Red Hat EX342

 Linux Troubleshooting: Red Hat EX342 – عیب یابی لینوکس: رد هت EX342 یک دوره آموزشی در خصوص تجزیه و تحلیل سیستم های Red Hat Enterprise Linux جهت عیب یابی مسائل و مواردی است که ممکن است باعث خرابی و یا از دست دادن کارایی منابع شما می شود. این دوره شما را برای شرکت در آزمون EX342 و دریافت گواهی رد هت در تشخیص و عیب یابی لینوکس آماده می سازد.

by Sander van Vugt
Publisher: Pearson IT Certification
Release Date: July 2018
ISBN: 9780135207598
Topics:Linux

The performance-based Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting exam (EX342) tests your ability to analyze Red Hat Enterprise Linux systems for common issues that may cause degradation or loss of performance and either correct the issues or gather forensic information that can be passed along to a third party.

By passing this exam you become a Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting, which also counts toward becoming a Red Hat Certified Architect.

Table of contents

Introduction
Linux Troubleshooting: Introduction

Module 1: Troubleshooting Basics
Module introduction

Lesson 1: Troubleshooting Basics
Learning objectives
1.1 Understanding Troubleshooting Procedures
1.2 Gathering Information
1.3 Using Red Hat Resources
1.4 Warming Up Lab

Lesson 2: Systems Monitoring
Learning objectives
2.1 Using Monitoring Systems
2.2 Understanding Logging
2.3 Setting up Remote Logging
2.4 Tracking Changes
2.5 Configuring AIDE
2.6 Working with auditd

Module 2: Troubleshooting Boot and Hardware-related Issues
Module introduction

Lesson 3: Troubleshooting Boot Issues
Learning objectives
3.1 Understanding the Boot Procedure
3.2 Understanding Troubleshooting Modes
3.3 Using Low-Level Troubleshooting Modes
3.4 Using Systemd Troubleshooting Modes
3.5 Understanding GRUB
3.6 Fixing Boot Problems on a BIOS System
3.7 Understanding UEFI Boot
3.8 Fixing Boot problems on a UEFI System
3.9 Troubleshooting Failing Services in Systemd
3.10 Resetting the Root Password

Lesson 4: Managing Hardware Issues
Learning objectives
4.1 Understanding Hardware Management
4.2 Identifying Hardware
4.3 Finding Hardware Issues
4.4 Identifying Driver Issues
4.5 Managing Kernel Module Options
4.6 Managing Virtualization Options
4.7 Fixing Virtualization Problems

Lesson 5: Managing Storage Issues
Learning objectives
5.1 Understanding Linux Storage
5.2 Recovering Deleted Partitions
5.3 Fixing File System Corruption
5.4 Dealing with LVM Problems
5.5 Understanding LUKS
5.6 Fixing LUKS Issues
5.7 Fixing Issues with Virtual Machine Storage
5.8 Understanding iSCSI
5.9 Resolving iSCSI Issues

Lesson 6: Troubleshooting Networking
Learning objectives
6.1 Understanding Networking
6.2 Fixing Device Configuration Issues
6.3 Fixing DNS Issues
6.4 Fixing Connectivity Issues
6.5 Analyzing Network Traffic
6.6 Analyzing Local Service Availability
6.7 Analyzing Remote Service Availability
6.8 Understanding Firewalling
6.9 Fixing Firewall Issues

Module 3: Troubleshooting Software-related Issues
Module introduction

Lesson 7: Managing Software Issues
Learning objectives
7.1 Understanding Linux Packages
7.2 Resolving Dependency Issues
7.3 Recovering a Corrupted Package Database
7.4 Identifying Changed Files

Lesson 8: Managing Application Issues
Learning objectives
8.1 Understanding the Application Stack
8.2 Fixing Library Issues
8.3 Debugging Applications
8.4 Identifying Memory Leaks

Lesson 9: Managing Security Issues
Learning objectives
9.1 Understanding Linux Security
9.2 Preventing Backdoors
9.3 Troubleshooting Permissions
9.4 Understanding SELinux Issues
9.5 Managing SELinux Issues
9.6 Understanding PAM
9.7 Managing Authentication Problems
9.8 Understanding Remote Authentication
9.9 Troubleshooting Remote Authentication

Module 4: Troubleshooting Kernel-related Issues
Module introduction

Lesson 10: Troubleshooting Kernel Issues
Learning objectives
10.1 Understanding the Linux Kernel
10.2 Working with Crash Dumps
10.3 Setting up Remote Core Dump Locations
10.4 Testing and Analyzing Core Dumps

Lesson 11: Fixing Performance Problems
Learning objectives
11.1 Understanding Linux Performance
11.2 Fixing Storage Performance
11.3 Fixing File System Performance
11.4 Optimizing Memory performance
11.5 Optimizing Network Performance
11.6 Optimizing Scheduler Performance
11.7 Optimizing CPU Performance

Module 5: Sample Exam
Module introduction

Lesson 12: Sample Exam
Learning objectives
12.1 Fixing Problems Logging in as Root
12.2 Fixing Boot Problems
12.3 Failure to Start SSH
12.4 Analyzing a Hack
12.5 Big Trouble While Booting
12.6 Fixing More Login Problems

Summary
Linux Troubleshooting: Summary