Sander Van Vugt

Red Hat RHCSA 8 Cert Guide (eBook, PDF)

EX200

• Format: PDF

Produktbeschreibung

Learn, prepare, and practice for Red Hat RHCSA 8 (EX200) exam success with this Cert Guide from Pearson IT Certification, a leader in IT Certification learning.

* Master Red Hat RHCSA 8 EX200 exam topics

* Assess your knowledge with chapter-ending quizzes and labs

* Review key concepts with exam-preparation tasks

* Practice with four unique practice tests

* Learn from two full hours of video training from the author's Red Hat Certified System Administrator (RHCSA) Complete Video Course, 3rd Edition.

Red Hat RHCSA 8 Cert Guide is a comprehensive exam study guide. Leading Linux consultant, author, and instructor Sander van Vugt shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.

The book presents you with an organized test-preparation routine through the use of proven series elements and techniques. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks help you drill on key concepts you must know thoroughly. Review questions help you assess your knowledge, and a final preparation chapter guides you through tools and resources to help you craft your final study plan.

The companion website also contains two additional practice tests plus two full hours of personal video training from the author's Red Hat Certified System Administrator (RHCSA) Complete Video Course, 3rd Edition.

Well regarded for its level of detail, assessment features, and challenging review questions and exercises, this study guide helps you master the concepts and techniques that will enable you to succeed on the exam the first time, including

* Basic system management: Installation, tools, file management, text files, RHEL8 connections, user/group management, permissions, and network configuration

* Operating running systems: Managing software, processes, storage, and advanced storage; working with Systemd; scheduling tasks; and configuring logging

* Advanced system administration: Managing the kernel and boot procedures, essential troubleshooting, bash shell scripting

* Managing network services: Configuring SSH, firewalls, and time services; managing Apache HTTP services and SE Linux; accessing network storage; and managing containers

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Produktdetails

• Verlag: Pearson ITP
• Seitenzahl: 704
• Erscheinungstermin: 8. März 2021
• Englisch
• ISBN-13: 9780137341658
• Artikelnr.: 61770784

Autorenporträt

Sander van Vugt is an independent Linux trainer, author, and consultant living in the Netherlands. Sander is the author of the best-selling Red Hat Certified System Administrator (RHCSA) Complete Video Course and the Red Hat Certified Engineer (RHCE) Complete Video Course. He has also written numerous books about different Linux-related topics and many articles for Linux publications around the world. Sander has been teaching Red Hat, Linux+, and LFCS classes since 1994. As a consultant, he specializes in Linux high-availability solutions and performance optimization. You can find more information about Sander on his website at http://www.sandervanvugt.com.

For more information about RHCSA certification and additional resources, visit the author's Red Hat Certification page at http://www.rhatcert.com/.

Inhaltsangabe

Introduction xxviii Part I: Performing Basic System Management Tasks
Chapter 1 Installing Red Hat Enterprise Linux 3 "Do I Know This Already?"
Quiz 3 Foundation Topics 6 Preparing to Install Red Hat Enterprise Linux 6
What Is Red Hat Enterprise Linux 8 Server? 6 Getting the Software 7 Using
Red Hat Enterprise Linux 7 Using CentOS 7 Other Distributions 8
Understanding Access to Repositories 8 Setup Requirements 9 Cert Guide
Environment Description 9 Performing a Manual Installation 10 Summary 24
Exam Preparation Tasks 25 End-of-Chapter Lab 26 Chapter 2 Using Essential
Tools 29 "Do I Know This Already?" Quiz 29 Foundation Topics 32 Basic Shell
Skills 32 Understanding Commands 32 Executing Commands 32 I/O Redirection
34 Using Pipes 36 History 37 Bash Completion 39 Editing Files with vim 39
Understanding the Shell Environment 42 Understanding Variables 42
Recognizing Environment Configuration Files 43 Using /etc/motd and
/etc/issue 43 Finding Help 44 Using --help 44 Using man 45 Finding the
Right man Page 46 Updating mandb 47 Using info 48 Using /usr/share/doc
Documentation Files 49 Summary 50 Exam Preparation Tasks 50 End-of-Chapter
Lab 51 Chapter 3 Essential File Management Tools 53 "Do I Know This
Already?" Quiz 53 Foundation Topics 56 Working with the File System
Hierarchy 56 Defining the File System Hierarchy 56 Understanding Mounts 57
Managing Files 61 Working with Wildcards 62 Managing and Working with
Directories 62 Working with Absolute and Relative Pathnames 63 Listing
Files and Directories 64 Copying Files and Directories 65 Moving Files and
Directories 66 Deleting Files and Directories 66 Using Links 68
Understanding Hard Links 68 Understanding Symbolic Links 69 Creating Links
69 Removing Links 70 Working with Archives and Compressed Files 71 Managing
Archives with tar 72 Creating Archives with tar 72 Monitoring and
Extracting tar Files 73 Using Compression 74 Summary 75 Exam Preparation
Tasks 75 End-of-Chapter Lab 77 Chapter 4 Working with Text Files 81 "Do I
Know This Already?" Quiz 81 Foundation Topics 84 Using Common Text
File-Related Tools 84 Doing More with less 84 Showing File Contents with
cat 85 Displaying the First or Last Lines of a File with head and tail 86
Filtering Specific Columns with cut 87 Sorting File Contents and Output
with sort 87 Counting Lines, Words, and Characters with wc 88 A Primer to
Using Regular Expressions 89 Using Line Anchors 90 Using Escaping in
Regular Expressions 90 Using Wildcards and Multipliers 91 Using grep to
Analyze Text 92 Working with Other Useful Text Processing Utilities 93
Summary 94 Exam Preparation Tasks 95 End-of-Chapter Lab 9 Chapter 5
Connecting to Red Hat Enterprise Linux 8 99 "Do I Know This Already?" Quiz
99 Foundation Topics 102 Working on Local Consoles 102 Logging In to a
Local Console 102 Switching Between Terminals in a Graphical Environment
103 Working with Multiple Terminals in a Nongraphical Environment 104
Understanding Pseudo Terminal Devices 106 Booting, Rebooting, and Shutting
Down Systems 106 Using SSH and Related Utilities 108 Accessing Remote
Systems Using SSH 108 Using Graphical Applications in an SSH Environment
111 Securely Transferring Files Between Systems 111 Using scp to Securely
Copy Files 112 Using sftp to Securely Transfer Files 112 Using rsync to
Synchronize Files 113 Configuring Key-Based Authentication for SSH 114
Using Passphrases or Not? 114 Using the screen Command 115 Summary 117 Exam
Preparation Tasks 117 End-of-Chapter Labs 118 Chapter 6 User and Group
Management 121 "Do I Know This Already?" Quiz 121 Foundation Topics 124
Understanding Different User Types 124 Users on Linux 124 Working as Root
124 Using su 125 sudo 126 PolicyKit 126 Managing User Accounts 127 System
Accounts and Normal Accounts 127 Creating Users 131 Modifying the
Configuration Files 131 Using useradd 131 Home Directories 132 Managing
User Properties 132 Configuration Files for User Management Defaults 132
Managing Password Properties 133 Creating a User Environment 134 Creating
and Managing Group Accounts 135 Understanding Linux Groups 135 Creating
Groups 136 Creating Groups with vigr 136 Using groupadd to Create Groups
137 Managing Group Properties 137 Summary 138 Exam Preparation Tasks 138
End-of-Chapter Lab 140 Chapter 7 Permissions Management 143 "Do I Know This
Already?" Quiz 143 Foundation Topics 146 Managing File Ownership 146
Displaying Ownership 146 Changing User Ownership 147 Changing Group
Ownership 148 Understanding Default Ownership 148 Managing Basic
Permissions 149 Understanding Read, Write, and Execute Permissions 149
Applying Read, Write, and Execute Permissions 150 Managing Advanced
Permissions 152 Understanding Advanced Permissions 152 Applying Advanced
Permissions 155 Managing ACLs 156 Understanding ACLs 156 Preparing Your
File System for ACLs 157 Changing and Viewing ACL Settings with setfacl and
getfacl 157 Working with Default ACLs 159 Setting Default Permissions with
umask 160 Working with User-Extended Attributes 162 Summary 163 Exam
Preparation Tasks 163 End-of-Chapter Lab 165 Chapter 8 Configuring
Networking 167 "Do I Know This Already?" Quiz 167 Foundation Topics 170
Networking Fundamentals 170 IP Addresses 170 IPv6 Addresses 171 Network
Masks 171 Binary Notation 172 MAC Addresses 173 Protocol and Ports 173
Managing Network Addresses and Interfaces 174 Validating Network
Configuration 175 Validating Network Address Configuration 175 Validating
Routing 178 Validating the Availability of Ports and Services 178
Configuring Network Configuration with nmtui and nmcli 180 Required
Permissions to Change Network Configuration 180 Configuring the Network
with nmcli 181 Configuring the Network with nmtui 187 Working on Network
Configuration Files 189 Setting Up Hostname and Name Resolution 190
Hostnames 190 DNS Name Resolution 192 Summary 194 Exam Preparation Tasks
194 End-of-Chapter Lab 195 Part II: Operating Running Systems Chapter 9
Managing Software 197 "Do I Know This Already?" Quiz 197 Foundation Topics
200 Managing Software Packages with yum 200 Understanding the Role of
Repositories 200 Registering Red Hat Enterprise Linux for Support 201
Managing Subscriptions 202 Specifying Which Repository to Use 203
Understanding Repository Security 206 Creating Your Own Repository 208
Using yum 209 Using yum to Find Software Packages 210 Getting More
Information About Packages 211 Installing and Removing Software Packages
212 Showing Lists of Packages 214 Updating Packages 215 Working with yum
Package Groups 216 Using yum History 218 Managing Package Module Streams
220 Understanding Modules 220 Managing Modules 221 Managing Software
Packages with rpm 225 Understanding RPM Filenames 226 Querying the RPM
Database 226 Querying RPM Package Files 227 Using repoquery 228 Summary 229
Exam Preparation Tasks 229 End-of-Chapter Labs 231 Chapter 10 Managing
Processes 233 "Do I Know This Already?" Quiz 233 Foundation Topics 236
Introducing Process Management 236 Managing Shell Jobs 236 Running Jobs in
the Foreground and Background 236 Managing Shell Jobs 237 Managing
Parent-Child Relations 239 Using Common Command-Line Tools for Process
Management 239 Understanding Processes and Threads 239 Using ps to Get
Process Information 240 Adjusting Process Priority with nice 242 Sending
Signals to Processes with kill, killall, and pkill 244 Using top to Manage
Processes 246 Using tuned to Optimize Performance 248 Summary 249 Exam
Preparation Tasks 249 End-of-Chapter Lab 251 Chapter 11 Working with
Systemd 253 "Do I Know This Already?" Quiz 253 Foundation Topics 256
Understanding Systemd 256 Understanding Systemd Unit Locations 256
Understanding Systemd Service Units 257 Understanding Systemd Mount Units
258 Understanding Systemd Socket Units 259 Understanding Systemd Target
Units 259 Managing Units Through Systemd 261 Managing Dependencies 263
Managing Unit Options 265 Summary 266 Exam Preparation Tasks 267
End-of-Chapter Lab 268 Chapter 12 Scheduling Tasks 271 "Do I Know This
Already?" Quiz 271 Foundation Topics 274 Configuring cron to Automate
Recurring Tasks 274 Managing the crond Service 274 Understanding cron
Timing 276 Managing cron Configuration Files 276 Understanding the Purpose
of anacron 278 Managing cron Security 280 Configuring at to Schedule Future
Tasks 281 Summary 282 Exam Preparation Tasks 282 End-of-Chapter Lab 283
Chapter 13 Configuring Logging 285 "Do I Know This Already?" Quiz 285
Foundation Topics 288 Understanding System Logging 288 Understanding the
Role of rsyslogd and journald 288 Reading Log Files 290 Understanding Log
File Contents 290 Live Log File Monitoring 292 Using logger 292 Configuring
rsyslogd 293 Understanding rsyslogd Configuration Files 293 Understanding
rsyslog.conf Sections 293 Understanding Facilities, Priorities, and Log
Destinations 294 Rotating Log Files 297 Working with journald 299 Using
journalctl to Find Events 299 Preserving the Systemd Journal 302 Summary
304 Exam Preparation Tasks 304 End-of-Chapter Lab 306 Chapter 14 Managing
Storage 309 "Do I Know This Already?" Quiz 309 Foundation Topics 312
Understanding MBR and GPT Partitions 312 Understanding the MBR Partitioning
Scheme 312 Understanding the Need for GPT Partitioning 313 Understanding
Storage Measurement Units 314 Managing Partitions and File Systems 314
Creating MBR Partitions with fdisk 315 Using Extended and Logical
Partitions on MBR 319 Creating GPT Partitions with gdisk 320 Creating GPT
Partitions with parted 324 Creating File Systems 325 Changing File System
Properties 327 Managing Ext4 File System Properties 327 Managing XFS File
System Properties 329 Adding Swap Partitions 329 Adding Swap Files 330
Mounting File Systems 330 Manually Mounting File Systems 331 Using Device
Names, UUIDs, or Disk Labels 331 Automating File System Mounts Through
/etc/fstab 332 Summary 335 Exam Preparation Tasks 335 End-of-Chapter Lab
337 Chapter 15 Managing Advanced Storage 339 "Do I Know This Already?" Quiz
339 Foundation Topics 342 Understanding LVM 342 LVM Architecture 342 LVM
Features 343 Creating LVM Logical Volumes 344 Creating the Physical Volumes
346 Creating the Volume Groups 349 Creating the Logical Volumes and File
Systems 351 Understanding LVM Device Naming 351 Resizing LVM Logical
Volumes 353 Resizing Volume Groups 353 Resizing Logical Volumes and File
Systems 354 Configuring Stratis 356 Understanding Stratis Architecture 356
Creating Stratis Storage 357 Managing Stratis 358 Configuring VDO 359
Understanding VDO 359 Setting Up VDO 360 Summary 362 Exam Preparation Tasks
362 End-of-Chapter Labs 364 Part III: Performing Advanced System
Administration Tasks Chapter 16 Basic Kernel Management 367 "Do I Know This
Already?" Quiz 367 Foundation Topics 370 Understanding the Role of the
Linux Kernel 370 Understanding the Use of Kernel Threads and Drivers 370
Analyzing What the Kernel Is Doing 371 Working with Kernel Modules 373
Understanding Hardware Initialization 374 Managing Kernel Modules 376
Checking Driver Availability for Hardware Devices 379 Managing Kernel
Module Parameters 380 Upgrading the Linux Kernel 381 Summary 381 Exam
Preparation Tasks 381 End-of-Chapter Lab 383 Chapter 17 Managing and
Understanding the Boot Procedure 385 "Do I Know This Already?" Quiz 385
Foundation Topics 388 Managing Systemd Targets 388 Understanding Systemd
Targets 388 Working with Targets 388 Understanding Target Units 389
Understanding Wants 390 Managing Systemd Targets 390 Isolating Targets 391
Setting the Default Target 393 Working with GRUB 2 394 Understanding GRUB 2
394 Understanding GRUB 2 Configuration Files 395 Modifying Default GRUB 2
Boot Options 395 Summary 396 Exam Preparation Tasks 397 End-of-Chapter Labs
398 Chapter 18 Essential Troubleshooting Skills 401 "Do I Know This
Already?" Quiz 401 Foundation Topics 404 Understanding the RHEL 8 Boot
Procedure 404 Passing Kernel Boot Arguments 406 Accessing the Boot Prompt
406 Starting a Troubleshooting Target 407 Using a Rescue Disk 408 Restoring
System Access Using a Rescue Disk 409 Reinstalling GRUB Using a Rescue Disk
411 Re-creating the Initramfs Using a Rescue Disk 411 Fixing Common Issues
413 Reinstalling GRUB 2 413 Fixing the Initramfs 414 Recovering from File
System Issues 414 Resetting the Root Password 416 Recovering Access to a
Virtual Machine 416 Summary 418 Exam Preparation Tasks 418 End-of-Chapter
Lab 420 Chapter 19 An Introduction to Bash Shell Scripting 423 "Do I Know
This Already?" Quiz 423 Foundation Topics 426 Understanding Shell Scripting
Core Elements 426 Using Variables and Input 428 Using Positional Parameters
428 Working with Variables 430 Using Conditional Loops 432 Working with if
... then ... else 432 Using and && 433 Applying for 434 Understanding
while and until 435 Understanding case 436 Bash Shell Script Debugging 438
Summary 438 Exam Preparation Tasks 438 End-of-Chapter Lab 440 Part IV:
Managing Network Services Chapter 20 Configuring SSH 443 "Do I Know This
Already?" Quiz 443 Foundation Topics 446 Hardening the SSH Server 446
Limiting Root Access 446 Configuring Alternative Ports 447 Modifying
SELinux to Allow for Port Changes 447 Limiting User Access 448 Using Other
Useful sshd Options 449 Session Options 450 Connection Keepalive Options
450 Configuring Key-Based Authentication with Passphrases 451 Summary 452
Exam Preparation Tasks 452 End-of-Chapter Lab 454 Chapter 21 Managing
Apache HTTP Services 457 "Do I Know This Already?" Quiz 457 Foundation
Topics 460 Configuring a Basic Apache Server 460 Installing the Required
Software 460 Identifying the Main Configuration File 460 Creating Web
Server Content 463 Understanding Apache Configuration Files 464 Creating
Apache Virtual Hosts 465 Summary 468 Exam Preparation Tasks 468
End-of-Chapter Lab 469 Chapter 22 Managing SELinux 471 "Do I Know This
Already?" Quiz 472 Foundation Topics 475 Understanding SELinux Working and
Modes 475 Understanding Context Settings and the Policy 479 Monitoring
Current Context Labels 479 Setting Context Types 481 Finding the Context
Type You Need 484 Restoring Default File Contexts 485 Using Boolean
Settings to Modify SELinux Settings 487 Diagnosing and Addressing SELinux
Policy Violations 488 Making SELinux Analyzing Easier 490 Preparing for
SELinux Coverage on the Exam 492 Summary 492 Exam Preparation Tasks 492
End-of-Chapter Lab 494 Chapter 23 Configuring a Firewall 497 "Do I Know
This Already?" Quiz 497 Foundation Topics 500 Understanding Linux
Firewalling 500 Understanding Previous Solutions 500 Understanding
Firewalld 500 Understanding Firewalld Zones 501 Understanding Firewalld
Services 502 Working with Firewalld 503 Summary 506 Exam Preparation Tasks
506 End-of-Chapter Lab 508 Chapter 24 Accessing Network Storage 511 "Do I
Know This Already?" Quiz 511 Foundation Topics 514 Using NFS Services 514
Understanding NFS Security 514 RHEL 8 NFS Versions 514 Setting Up NFS 515
Mounting the NFS Share 516 Using CIFS Services 516 Discovering CIFS Shares
517 Mounting Samba Shares 518 Authenticating to Samba Shares 518
Configuring a Samba Server 518 Mounting Remote File Systems Through fstab
520 Mounting NFS Shares Through fstab 520 Mounting Samba Shares Through
fstab 521 Using Automount to Mount Remote File Systems 521 Understanding
Automount 521 Defining Mounts in Automount 522 Configuring Automount for
NFS 522 Using Wildcards in Automount 523 Summary 524 Exam Preparation Tasks
524 End-of-Chapter Lab 525 Chapter 25 Configuring Time Services 527 "Do I
Know This Already?" Quiz 527 Foundation Topics 530 Understanding Local Time
530 Using Network Time Protocol 531 Managing Time on Red Hat Enterprise
Linux 531 Using date 532 Using hwclock 532 Using timedatectl 533 Managing
Time Zone Settings 535 Configuring Time Service Clients 537 Summary 538
Exam Preparation Tasks 539 End-of-Chapter Lab 540 Chapter 26 Managing
Containers 543 Do I Know This Already Quiz 543 Foundation Topics 546
Understanding Containers 546 Container Host Requirements 546 Containers on
RHEL 8 548 Container Orchestration 548 Running a Container 549 Working with
Container Images 552 Using Registries 553 Finding Images 555 Inspecting
Images 557 Performing Image Housekeeping 559 Managing Containers 560
Managing Container Status 560 Running Commands in a Container 561 Managing
Container Ports 563 Managing Container Environment Variables 564 Managing
Container Storage 565 Running Containers as Systemd Services 566 Exam
Preparation Tasks 569 End-of-Chapter Lab 570 Chapter 27 Final Preparation
573 General Tips 573 Verifying Your Readiness 573 Registering for the Exam
573 On Exam Day 574 During the Exam 574 The Nondisclosure Agreement 576
Chapter 28 Theoretical Pre-Assessment Exam 577 Part V: RHCSA RHEL 8
Practice Exams RHCSA Practice Exam A 581 RHCSA Practice Exam B 583 Appendix
A Answers to the "Do I Know This Already?" Quizzes and Review Questions 585
Glossary 619 Online Elements: RHCSA Practice Exam C RHCSA Practice Exam D
Appendix B Memory Tables Appendix C Memory Tables Answer Key Appendix D
Study Planner Glossary