LPIC-2: Linux Professional Institute Certification Study Guide: Exam 201 and Exam 202

ISBN-13: 9781119150794 / Angielski / Miękka / 2016 / 768 str.

Christine Bresnahan; Richard Blum

Opis

Full coverage of the latest LPI-level 2 exams, with bonus online test bank LPIC-2 is the one-stop preparation resource for the Linux Professional Institute's Advanced Level certification exam. With 100 percent coverage of all exam objectives, this book provides clear and concise coverage of the Linux administration topics you'll need to know for exams 201 and 202. Practical examples highlight the real-world applications of important concepts, and together, the author team provides insights based on almost fifty years in the IT industry. This brand new second edition has been completely revamped to align with the latest versions of the exams, with authoritative coverage of the Linux kernel, system startup, advanced storage, network configuration, system maintenance, web services, security, troubleshooting, and more. You also get access to online learning tools including electronic flashcards, chapter tests, practice exams, and a glossary of critical terms to help you solidify your understanding of upper-level Linux administration topics. The LPI-level 2 certification confirms your advanced Linux skill set, and the demand for qualified professionals continues to grow. This book gives you the conceptual guidance and hands-on practice you need to pass the exam with flying colors.

• Understand all of the material for both LPIC-2 exams
• Gain insight into real-world applications
• Test your knowledge with chapter tests and practice exams
• Access online study aids for more thorough preparation

Organizations are flocking to the open-source Linux as an excellent, low-cost, secure alternative to expensive operating systems like Microsoft Windows. As the Linux market share continues to climb, organizations are scrambling to find network and server administrators with expert Linux knowledge and highly practical skills. The LPI-level 2 certification makes you the professional they need, and LPIC-2 is your ideal guide to getting there.

Spis treści

Introduction xxiii

Assessment Test xliii

Part I The LPI 201 Exam 1

Chapter 1 Starting a System 3

The Linux Boot Process 4

Following the Boot Process 4

Viewing the Boot Process 5

The Firmware Startup 6

The BIOS Startup 6

The UEFI Startup 7

Linux Bootloaders 8

GRUB Legacy 9

GRUB 2 12

Alternative Bootloaders 14

Secure Bootloaders 15

Process Initialization 16

The SysV Method 17

The systemd Method 21

The Upstart Method 26

System Recovery 27

Kernel Failures 27

Root Drive Failure 29

Summary 31

Exam Essentials 31

Review Questions 33

Chapter 2 Maintaining the System 37

Keeping Users Informed 38

Looking at Fluid Messaging 39

Looking at Static Messaging 47

Backing Up the System 51

Developing a Backup Strategy 51

Performing Backups 61

Installing Programs from Source 72

Obtaining the Installation Files 73

Unpacking the Installation Files 73

Reading Installation Documentation 74

Compiling Preparation 75

Compiling the Program 76

Completing the Installation 76

Managing Resource Usage 79

Measuring Resource Usage 79

Predicting Resource Usage 83

Troubleshooting Resource Usage 85

Summary 87

Exam Essentials 87

Review Questions 89

Chapter 3 Mastering the Kernel 93

What Is the Kernel? 94

The Kernel Features 94

Parts of the Kernel 104

Kernel Versions 107

Compiling a Kernel 108

Obtaining Source Code 109

Creating the Configuration File 110

Compiling and Installing the Kernel 114

Compiling and Installing Modules 116

Creating an Initial RAM Disk 116

Booting the New Kernel 118

Creating a Kernel Package 119

Maintaining the Kernel 120

Working with Module Files 120

Module Commands 120

Working with Hardware 125

Automatically Detecting Hardware 128

Troubleshooting the Kernel 129

Summary 132

Exam Essentials 133

Review Questions 135

Chapter 4 Managing the Filesystem 139

Operating the Linux Filesystem 140

Understanding Filesystem Structures 140

Understanding Filesystem Types 141

Making a Filesystem 144

Attaching a Filesystem 146

Exploring Additional Filesystem Topics 162

Looking at Memory–Based Linux Filesystems 162

Looking at the Btrfs Filesystem 163

Exploring Btrfs Subvolumes 165

Exploring Btrfs Snapshots 169

Looking at Optical Filesystems 171

Looking at Swap Filesystems 177

Looking at Network–Based Filesystems 180

Understanding Auto–Mounting 180

Looking at Encrypted Filesystems 183

Maintaining Linux Filesystems 185

Adjusting a Filesystem 185

Checking and Repairing a Filesystem 187

Using SMART 189

Summary 192

Exam Essentials 192

Review Questions 195

Chapter 5 Administering Advanced Storage Devices 199

Configuring RAID 200

Understanding RAID 200

Implementing RAID on Linux 204

Managing a RAID Array 216

Adjusting Storage Devices 221

Looking at Drive Interface Concepts 221

Testing and Tuning Drives 223

Implementing iSCSI 234

Managing Logical Volumes 245

Understanding LVM 245

Creating Logical Volumes 246

Supporting Logical Volumes 254

Understanding the Device Mapper 263

Summary 264

Exam Essentials 264

Review Questions 267

Chapter 6 Navigating Network Services 271

Networking Basics 272

The Physical Layer 272

The Network Layer 274

The Transport Layer 278

The Application Layer 279

Configuring Network Features 279

Network Configuration Files 280

Graphical Tools 282

Command–Line Tools 284

Basic Network Troubleshooting 288

Checking the Log Files 288

Viewing the ARP Cache 289

Sending Test Packets 290

Testing Network Routes 291

Testing Client/Server Connectivity 293

Finding Host Information 295

Network Security 297

Advanced Network Troubleshooting 297

Viewing Open Network Connections 297

Viewing Network Statistics 300

Scanning the Network 302

Capturing Network Traffic 303

Summary 308

Exam Essentials 308

Review Questions 310

Part II The LPI 202 Exam 315

Chapter 7 Organizing Email Services 317

The Linux Mail System 318

Mail Transfer Agent 319

Mail Delivery Agent 321

Mail User Agent 323

Email Protocols 325

Simple Mail Transfer Protocol 326

Post Office Protocol 332

Internet Message Access Protocol 334

Using Email Servers 338

Using Sendmail 338

Using Postfix 342

Local Email Delivery 351

Procmail Basics 351

Sieve 356

Remote Email Delivery 359

Using Courier 359

Using Dovecot 360

Summary 363

Exam Essentials 364

Review Questions 366

Chapter 8 Directing DNS 371

Configuring a DNS Server 372

Understanding DNS and BIND 372

Configuring DNS on Linux 379

Starting, Stopping, and Reloading BIND 395

Configuring BIND Logging 398

Creating and Maintaining DNS Zones 403

Exploring BIND Zone Files 403

Managing BIND Zones on Linux 417

Securing a DNS Server 427

Setting Up Basic Security 427

Jailing BIND 431

Using DNSSEC 434

Connecting via TSIG 440

Employing DANE 442

Summary 445

Exam Essentials 445

Review Questions 447

Chapter 9 Offering Web Services 451

What Is a Web Server? 452

Web Server Basics 452

The HTTP Standard 453

Linux Web Servers 459

The Apache Web Server 461

Installing an Apache Server 462

Configuring the Apache Server 464

Hosting Dynamic Web Applications 472

Creating a Secure Web Server 474

Using a Proxy Server 482

Installing Squid 482

Configuring Squid 483

Configuring Clients 486

The Nginx Server 487

Installing Nginx 487

Configuring Nginx 488

Summary 490

Exam Essentials 491

Review Questions 493

Chapter 10 Sharing Files 497

Looking at Samba 498

Understanding Samba 498

Configuring Samba 500

Troubleshooting Samba 527

Looking at NFS 530

Understanding NFS 530

Configuring NFS 533

Securing NFS 549

Troubleshooting NFS 552

Looking at FTP Servers 553

Understanding FTP 554

Configuring vsftpd 556

Configuring Pure–FTPd 568

Summary 575

Exam Essentials 575

Review Questions 577

Chapter 11 Managing Network Clients 581

Assigning Network Addresses 582

The DHCP Standard 583

Linux DHCP Software 584

Installing a Linux DHCP Server 585

Configuring a DHCP Server 585

Configuring Clients 590

Authentication Service 591

PAM Basics 591

Configuring PAM 594

Using PAM Application Files 595

Network Directories 597

LDAP Basics 597

The OpenLDAP Server 601

Implementing LDAP Clients 607

Summary 613

Exam Essentials 613

Review Questions 615

Chapter 12 Setting Up System Security 619

Server Network Security 620

Port Scanning 620

Intrusion Detection Systems 628

External Network Security 631

Using iptables 634

Routing in Linux 639

Connecting Securely to a Server 639

OpenSSH 640

OpenVPN 643

Security Resources 646

US–CERT 646

SANS Institute 647

Bugtraq 647

Summary 648

Exam Essentials 649

Review Questions 651

Appendix Answers to Review Questions 655

Chapter 1: Starting a System 656

Chapter 2: Maintaining the System 659

Chapter 3: Mastering the Kernel 662

Chapter 4: Managing the Filesystem 664

Chapter 5: Administering Advanced Storage Devices 667

Chapter 6: Navigating Network Services 670

Chapter 7: Organizing Email Services 673

Chapter 8: Directing DNS 676

Chapter 9: Offering Web Services 678

Chapter 10: Sharing Files 681

Chapter 11: Managing Network Clients 684

Chapter 12: Setting Up System Security 687

Index 691

O autorze

Christine Bresnahan, is an Adjunct Professor at Ivy Tech Community College, where she teaches Linux Essentials, LPIC–1/CompTIA Linux+ Certification, and Python programming. With over 25 years of IT experience, Christine specializes in producing educational materials for use both inside and outside of the classroom.
Richard Blum, is a 20–year IT industry veteran experienced with systems and network administration for UNIX, Linux, Novell, and Microsoft servers. Rich is an online Linux instructor for universities nationwide, and is a widely–published expert on Linux and open–source software.

Blurb

Covers 100% of exam objectives, including the Linux boot process, maintaining the system, kernel components, configuring RAID, basic network configuration, mail systems, basic DNS services, and much more... Includes online interactive learning environment with:

+2 custom bonus exams
+More than 300 electronic flashcards
+Searchable key term glossary

Your Complete guide to preparing for the LPIC–2 Linux Professional Institute Certification Exams 201 and 202

The LPIC–2 Study Guide is your one–stop resource for Exams 201 and 202, updated for version 4.5. Covering 100% of all objectives for both exams, this study guide provides concise, expert instruction on all Linux administration topics—along with real–world insight that will serve you on exam day and beyond. The Sybex interactive online learning environment gives you access to chapter tests, electronic flashcards, and a searchable glossary to help you study smarter. Fully updated to align with the latest versions of the exams, this study guide will have you feeling confident on exam day.

Coverage of 100% of all exam objectives in this Study Guide means you′ll be ready for:

• Linux^® Kernel
• Filesystem and Devices
• Advanced Storage Device Administration
• System Maintenance
• Web Services and File Sharing
• Domain Name Server
• E–Mail Services
• Troubleshooting and more

Interactive learning environment

Take your exam prep to the next level with Sybex′s superior interactive online study tools. To access our learning environment, simply visit www.wiley.com/go/sybextestprep, type in your unique PIN, and instantly gain access to:

• Interactive test bank with 2 practice exams. Practice exams help you identify areas where further review is needed. Get more than 90% of the answers correct, and you′re ready to take the certification exam. 144 questions total!
• More than 300 Electronic Flashcards to reinforce learning and last–minute prep before the exam
• Comprehensive glossary in PDF format gives you instant access to the key terms so you are fully prepared

ABOUT THE LPIC PROGRAM

The LPIC is a multi–level professional certification program administered by the Linux Professional Institute. These certifications are globally recognized as validating professional skill sets across all Linux distributions, proving a core knowledge base with a wide range of application. For more information visit www.lpi.org.