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Red Hat RHCSA/RHCE 7 Cert Guide: Red Hat Enterprise Linux 7 (EX200 and EX300)
- By Sander van Vugt
- Published Aug 7, 2015 by Pearson IT Certification. Part of the Certification Guide series.
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Description
- Copyright 2016
- Dimensions: 7-3/8" x 9-1/8"
- Pages: 1008
- Edition: 1st
- eBook (Watermarked)
- ISBN-10: 0-13-403100-8
- ISBN-13: 978-0-13-403100-2
Trust the best-selling Cert Guide series from Pearson IT Certification to help you learn, prepare, and practice for exam success. Cert Guides are built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam.
Master Red Hat RHCSA (EX200) and RHCE (EX300) exam topics
- Assess your knowledge with chapter-opening quizzes
- Review key concepts with exam preparation tasks
- Test yourself with 4 practice exams (2 RHCSA and 2 RHCE)
- Gain expertise and knowledge using the companion website, which contains over 40 interactive exercises, 4 advanced CLI simulations, 40 interactive quizzes and glossary quizzes (one for each chapter), 3 virtual machines and more.
Red Hat RHCSA/RHCE 7 Cert Guide presents you with an organized test preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and allow you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending labs help you drill on key concepts you must know thoroughly.
Red Hat RHCSA/RHCE 7 Cert Guide focuses specifically on the objectives for the newest Red Hat RHCSA (EX200) and RHCE (EX300) exams reflecting Red Hat Enterprise Linux 7. Expert Linux trainer and consultant 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.
Well-regarded for its level of detail, assessment features, comprehensive design scenarios, and challenging review questions and exercises, this study guide helps you master the concepts and techniques that will allow you to succeed on the exam the first time.
This study guide helps you master all the topics on the new RHCSA (EX200) and RHCE (EX300) exams, including
Part 1: RHCSA
- Basic System Management: Installation, tools, text files, server connections; user, group, and permissions management; network configuration
- Operating Running Systems: Process management, VMs, package installation, task scheduling, logging, managing partitions and LVM logical volumes
- Advanced System Administration: Basic kernel management, basic Apache server configuration, boot procedures/troubleshooting
- Managing Network Services: Using Kickstart; managing SELinux; configuring firewalls, remote mounts, FTP, and time services
Part 2: RHCE
- System Configuration/Management: External authentication/authorization, iSCSI SANs, performance reporting, optimization, logging, routing/advanced networking, Bash scripting
- System Security: Configuring firewalls, advanced Apache services, DNS, MariaDB, NFS, Samba, SMTP, SSH, and time synchronization
Sample Content
Table of Contents
Introduction xxxix
Part 1: RHCSA 3
Chapter 1 Installing Red Hat Enterprise Linux Server 7
“Do I Know This Already?” Quiz 7
Foundation Topics 11
Preparing to Install Red Hat Enterprise Linux 11
What Is Red Hat Enterprise Linux 7 Server? 11
Getting the Software 12
Using CentOS 12
Other Distributions 13
Understanding Access to Repositories 13
Understanding Red Hat Enterprise Linux 7 Server Variants and Add-Ons 14
Setup Requirements 15
Course Environment Description 16
Performing a Manual Installation 17
Summary 29
Exam Preparation Tasks 29
Review All Key Topics 29
Define Key Terms 30
Review Questions 30
End-of-Chapter Labs 30
Lab 1.1 31
Chapter 2 Using Essential Tools 33
“Do I Know This Already?” Quiz 33
Foundation Topics 36
Basic Shell Skills 36
Executing Commands 36
I/O Redirection 37
Using Pipes 39
History 40
Bash Completion 42
Editing Files with vim 42
Understanding the Shell Environment 45
Understanding Variables 45
Environment Configuration Files 46
Using /etc/motd and /etc/issue 46
Finding Help 47
Using --help 48
Using man 48
Finding the Right man Page 48
Updating mandb 50
Using info 51
Using /usr/share/doc Documentation Files 53
Summary 53
Exam Prep Tasks 53
Review All Key Topics 53
Complete Tables and Lists from Memory 53
Define Key Terms 54
Review Questions 54
End-of-Chapter Labs 54
Lab 2.1 55
Chapter 3 Essential File Management Tools 57
Do I Know This Already Quiz 57
Foundation Topics 60
Working with the File System Hierarchy 60
Defining the File System Hierarchy 60
Understanding Mounts 61
Managing Files 66
Working with Wildcards 67
Managing and Working with Directories 67
Working with Absolute and Relative Pathnames 68
Listing Files and Directories 69
Copying Files 70
Moving Files 71
Deleting Files 71
Using Links 73
Understanding Hard Links 73
Understanding Symbolic Links 74
Creating Links 74
Removing Links 75
Working with Archives and Compressed Files 76
Managing Archives with tar 77
Using Compression 78
Summary 80
Exam Preparation Tasks 80
Review All Key Topics 80
Complete Tables and Lists from Memory 81
Define Key Terms 81
Review Questions 81
End-of-Chapter Labs 82
Lab 3.1 82
Chapter 4 Working with Text Files 85
“Do I Know This Already?” Quiz 85
Foundation Topics 88
Using Common Text File-Related Tools 88
Doing More with Less 88
Showing File Contents with cat 89
Displaying the First or Last Lines of a File with head and tail 90
Filtering Specific Columns with cut 91
Sorting File Contents and Output with sort 91
Counting Lines, Words, and Characters with wc 93
A Primer to Using Regular Expressions 93
Using Line Anchors 94
Using Escaping in Regular Expressions 95
Using Wildcards and Multipliers 95
Using grep to Analyze Text 96
Working with Other Useful Text Processing Utilities 97
Summary 99
Exam Preparation Tasks 99
Review All Key Topics 99
Complete Tables and Lists from Memory 99
Define Key Terms 100
Review Questions 100
End-of-Chapter Labs 100
Lab 4.1 100
Chapter 5 Connecting to Red Hat Enterprise Linux 7 103
“Do I Know This Already?” Quiz 103
Foundation Topics 106
Working on Local Consoles 106
Logging In to a Local Console 106
Switching Between Terminals in a Graphical Environment 107
Working with Multiple Terminals in a Nongraphical Environment 108
Understanding Pseudo Terminal Devices 109
Booting, Rebooting, and Shutting Down Systems 110
Using SSH and Related Utilities 112
Accessing Remote Systems Using SSH 112
Using Graphical Applications in an SSH Environment 114
Securely Transferring Files Between Systems 115
Configuring Key-Based Authentication for SSH 116
Using Passphrases or Not? 117
Using the screen Command 118
Summary 119
Exam Preparation Tasks 120
Review All Key Topics 120
Define Key Terms 120
Review Questions 120
End-of-Chapter Labs 121
Lab 5.1 121
Chapter 6 User and Group Management 123
“Do I Know This Already?” Quiz 123
Foundation Topics 126
Different User Types 126
Users on Linux 126
Working as Root 126
Using su 127
sudo 128
PolicyKit 128
Managing User Accounts 129
System and Normal Accounts 129
Creating Users 132
Managing User Properties 134
Configuration Files for User Management Defaults 134
Managing Password Properties 135
Creating a User Environment 136
Creating and Managing Group Accounts 137
Understanding Linux Groups 137
Creating Groups 138
Managing Group Properties 139
Logging In Through an External Authentication Service 140
Understanding LDAP 140
Making the Authentication Platform Available 142
Configuring RHEL 7 for LDAP Authentication 142
Managing nslcd 143
Managing sssd 144
Summary 146
Exam Preparation Tasks 146
Review All Key Topics 146
Complete Tables and Lists from Memory 147
Define Key Terms 147
Review Questions 147
End-of-Chapter Labs 148
Lab 6.1 148
Lab 6.2 148
Chapter 7 Configuring Permissions 151
“Do I Know This Already?” Quiz 151
Foundation Topics 155
Managing File Ownership 155
Displaying Ownership 155
Changing User Ownership 156
Changing Group Ownership 156
Understanding Default Ownership 157
Managing Basic Permissions 158
Understanding Read, Write, and Execute Permissions 158
Applying Read, Write, and Execute Permissions 159
Managing Advanced Permissions 161
Understanding Advanced Permissions 161
Applying Advanced Permissions 164
Managing ACLs 165
Understanding ACLs 166
Preparing Your File System for ACLs 166
Changing and Viewing ACL Settings with setfacl and getfacl 166
Working with Default ACLs 168
Setting Default Permissions with umask 169
Working with User Extended Attributes 170
Summary 172
Exam Preparation Tasks 172
Review All Key Topics 172
Define Key Terms 173
Review Questions 173
End-of-Chapter Labs 173
Lab 7.1 173
Chapter 8 Configuring Networking 177
“Do I Know This Already?” Quiz 177
Foundation Topics 180
Networking Fundamentals 180
IP Addresses 180
IPv6 Addresses 181
Network Masks 181
Binary Notation 182
MAC Addresses 183
Protocol and Ports 183
Managing Network Addresses and Interfaces 183
Validating Network Configuration 184
Validating Network Address Configuration 185
Validating Routing 187
Validating the Availability of Ports and Services 187
Configuring Network Configuration with nmtui and nmcli 189
Configuring the Network with nmcli 189
Configuring the Network with nmtui 193
Working on Network Configuration Files 194
Setting Up Hostname and Name Resolution 196
Hostnames 196
DNS Resolving 198
Summary 200
Exam Prep Tasks 200
Review All Key Topics 200
Complete Tables and Lists from Memory 201
Define Key Terms 201
Review Questions 201
End-of-Chapter Labs 201
Lab 8.1 202
Chapter 9 Managing Processes 205
“Do I Know This Already?” Quiz 205
Foundation Topics 208
Introduction to Process Management 208
Managing Shell Jobs 208
Running Jobs in the Foreground and Background 208
Managing Shell Jobs 209
Managing Parent Child Relations 211
Using Common Command-Line Tools for Process Management 211
Understanding Processes and Threads 211
Using ps to Get Process Information 212
Adjusting Process Priority with nice 214
Sending Signals to Processes with kill, killall, and pkill 216
Using top to Manage Processes 218
Summary 220
Exam Preparation Tasks 220
Review All Key Topics 220
Complete Tables and Lists from Memory 221
Define Key Terms 221
Review Questions 221
End-of-Chapter Labs 222
Lab 9.1 222
Chapter 10 Working with Virtual Machines 225
“Do I Know This Already?” Quiz 225
Foundation Topics 228
Understanding RHEL 7 Virtualization 228
Understanding KVM Virtualization 228
Understanding QEMU 228
Red Hat Beyond KVM 229
Understanding the Role of Libvirtd 229
Making Your Server a KVM Host 231
Checking Host Requirements 231
Installing the KVM Software 232
Understanding KVM Host Networking 233
Managing Virtual Machines 234
Installing Virtual Machines 234
Using KVM Virtual Machines 240
Accessing Virtual Machines from a Text-Only Console 241
Managing Virtual Machine Properties 242
Managing Virtual Machines from the Command Line 243
Monitoring Virtual Machine Activity from Top 244
Summary 245
Exam Prep Tasks 245
Review All Key Topics 245
Define Key Terms 246
Review Questions 246
End-of-Chapter Labs 247
Lab 10.1 247
Chapter 11 Managing Software 249
“Do I Know This Already?” Quiz 249
Foundation Topics 252
Managing Software Packages with yum 252
Understanding the Role of Repositories 252
Specifying Which Repository to Use 253
Understanding Repository Security 256
Creating Your Own Repository 259
Using yum 260
Using yum to Find Software Packages 261
Getting More Information About Packages 262
Installing and Removing Software Packages 263
Showing Lists of Packages 265
Updating Packages 267
Working with yum Package Groups 268
Using yum History 270
Managing Software Packages with rpm 271
Understanding RPM Filenames 272
Querying the RPM Database 273
Querying RPM Package Files 273
Using repoquery 275
Summary 276
Exam Preparation Tasks 276
Review All Key Topics 276
Complete Tables and Lists from Memory 277
Define Key Terms 277
Review Questions 277
End-of-Chapter Labs 278
Lab 11.1 278
Chapter 12 Scheduling Tasks 281
“Do I Know This Already?” Quiz 281
Configuring cron to Automate Recurring Tasks 284
Managing the cron Service 284
Understanding cron Timing 285
Managing cron Configuration Files 286
Understanding the Purpose of anacron 288
Managing cron Security 289
Configuring at to Schedule Future Tasks 290
Summary 291
Exam Preparation Tasks 291
Review All Key Topics 291
Define Key Terms 292
Review Questions 292
End-of-Chapter Labs 293
Lab 12.1 293
Chapter 13 Configuring Logging 295
“Do I Know This Already?” Quiz 295
Foundation Topics 298
Understanding System Logging 298
Understanding the Role of rsyslogd and journald 298
Reading Log Files 300
Understanding Log File Contents 300
Live Log File Monitoring 302
Using logger 302
Configuring rsyslogd 303
Understanding rsyslogd Configuration Files 303
Understanding rsyslog.conf Sections 304
Understanding Facilities, Priorities, and Log Destinations 304
Rotating Log Files 308
Working with journald 310
Using journalctl to Find Events 310
Preserving the systemd Journal 314
Summary 316
Exam Prep Tasks 316
Review All Key Topics 316
Define Key Terms 316
Review Questions 317
End-of-Chapter Labs 317
Lab 13.1 317
Chapter 14 Managing Partitions 319
“Do I Know This Already?” Quiz 319
Understanding MBR and GPT Partitions 322
Understanding the MBR Partitioning Scheme 322
Understanding the Need for GPT Partitioning 323
Understanding Storage Measurement Units 324
Managing Partitions and File Systems 324
Creating MBR Partitions with fdisk 325
Using Extended and Logical Partitions on MBR 329
Creating GPT Partitions with gdisk 330
Creating File Systems 334
Changing File System Properties 336
Adding Swap Partitions 338
Adding Swap Files 339
Mounting File Systems 339
Manually Mounting File Systems 340
Using Device Names, UUIDs, or Disk Labels 340
Automating File System Mounts Through /etc/fstab 341
Summary 344
Exam Preparation Tasks 344
Review All Key Topics 344
Complete Tables and Lists from Memory 345
Define Key Terms 345
Review Questions 345
End-of-Chapter Labs 346
Lab 14.1 346
Lab 14.2 346
Chapter 15 Managing LVM Logical Volumes 349
“Do I Know This Already?” Quiz 349
Foundation Topics 352
Understanding LVM 352
LVM Architecture 352
LVM Features 353
Creating LVM Logical Volumes 354
Creating the Physical Volumes 355
Creating the Volume Groups 359
Creating the Logical Volumes and File Systems 360
Understanding LVM Device Naming 361
Resizing LVM Logical Volumes 363
Resizing Volume Groups 363
Resizing Logical Volumes and File Systems 364
Summary 366
Exam Preparation Tasks 366
Review All Key Topics 366
Define Key Terms 366
Review Questions 366
End-of-Chapter Labs 367
Lab 15.1 367
Chapter 16 Basic Kernel Management 369
“Do I Know This Already?” Quiz 369
Foundation Topics 372
Understanding the Role of the Linux Kernel 372
Understanding the use of Kernel Threads and Drivers 372
Analyzing What the Kernel Is Doing 374
Working with Kernel Modules 375
Understanding Hardware Initialization 376
Managing Kernel Modules 378
Checking Driver Availability for Hardware Devices 381
Managing Kernel Module Parameters 383
Upgrading the Linux Kernel 384
Summary 384
Exam Preparation Tasks 384
Review All Key Topics 384
Define Key Terms 385
Review Questions 385
End-of-Chapter Labs 386
Lab 16.1 386
Chapter 17 Configuring a Basic Apache Server 389
“Do I Know This Already?” Quiz 389
Foundation Topics 392
Configuring a Basic Apache Server 392
Installing the Required Software 392
Identifying the Main Configuration File 392
Creating Web Server Content 395
Understanding Apache Configuration Files 397
Creating Apache Virtual Hosts 398
Summary 400
Exam Preparation Tasks 401
Review All Key Topics 401
Define Key Terms 401
Review Questions 401
End-of-Chapter Labs 402
Lab 17.1 402
Chapter 18 Managing and Understanding the Boot Procedure 405
“Do I Know This Already?” Quiz 405
Foundation Topics 408
Working with Systemd 408
Understanding Systemd 408
Managing Units Through Systemd 413
Working with GRUB 2 420
Understanding GRUB 2 420
Modifying Default GRUB 2 Boot Options 423
Summary 424
Exam Prep Tasks 424
Review All Key Topics 424
Complete Tables and Lists from Memory 425
Define Key Terms 425
Review Questions 425
End-of-Chapter Labs 426
Lab 18.1 426
Lab 18.2 426
Chapter 19 Troubleshooting the Boot Procedure 429
“Do I Know This Already?” Quiz 429
Foundation Topics 432
Understanding the RHEL 7 Boot Procedure 432
Passing Kernel Boot Arguments 434
Accessing the Boot Prompt 434
Starting a Troubleshooting Target 435
Using a Rescue Disk 436
Restoring System Access Using a Rescue Disk 436
Reinstalling GRUB Using a Rescue Disk 439
Re-Creating the Initramfs Using a Rescue Disk 439
Fixing Common Issues 441
Reinstalling GRUB 2 441
Fixing the Initramfs 442
Recovering from File System Issues 442
Resetting the Root Password 443
Recovering Access to a Virtual Machine 444
Summary 446
Exam Prep Tasks 446
Review All Key Topics 446
Complete Tables and Lists from Memory 446
Define Key Terms 447
Review Questions 447
End-of-Chapter Labs 448
Lab 19.1 448
Chapter 20 Using Kickstart 451
“Do I Know This Already?” Quiz 451
Foundation Topics 454
Setting Up an Installation Server 454
Configuring a Network Server as Installation Server 454
Setting Up a TFTP and DHCP Server for PXE Boot 455
Installing the TFTP Server 456
Configuring DHCP for PXE Boot 457
Creating the TFTP PXE Server Content 458
Creating a Kickstart File 462
Using a Kickstart File to Perform an Automated Installation 462
Modifying the Kickstart File with system-config-kickstart 464
Making Manual Modifications to the Kickstart File 467
Summary 469
Exam Preparation Tasks 470
Review All Key Topics 470
Define Key Terms 470
Review Questions 470
End-of-Chapter Labs 471
Lab 20.1 471
Chapter 21 Managing SELinux 473
“Do I Know This Already?” Quiz 474
Foundation Topics 477
Understanding SELinux Working and Modes 477
Understanding Context Settings and the Policy 481
Monitoring Current Context Labels 481
Setting Context Types 483
Finding the Context Type You Need 486
Restoring Default File Contexts 487
Using Boolean Settings to Modify SELinux Settings 489
Diagnosing and Addressing SELinux Policy Violations 491
Making SELinux Analyzing Easier 492
Summary 494
Exam Prep Tasks 494
Review All Key Topics 494
Complete Tables and Lists from Memory 495
Define Key Terms 495
Review Questions 495
End-of-Chapter Labs 496
Lab 21.1 496
Chapter 22 Configuring a Firewall 499
“Do I Know This Already?” Quiz 499
Foundation Topics 502
Understanding Linux Firewalling 502
Understanding Previous Solutions 502
Understanding Firewalld 502
Understanding Firewalld Zones 503
Understanding Firewalld Services 504
Working with Firewalld 505
Working with Firewall-cmd 506
Working with Firewall-config 508
Summary 511
Exam Prep Tasks 511
Key Topics 511
Define Key Terms 512
Complete Tables and Lists from Memory 512
Review Questions 512
End-of-Chapter Labs 513
Chapter 23 Configuring Remote Mounts and FTP 515
“Do I Know This Already?” Quiz 515
Foundation Topics 519
Mounting NFS Shares 519
Understanding NFS Security Options 519
Understanding Kerberos Requirements 520
RHEL 7 NFS Support 521
Mounting the NFS Share 521
Mounting SMB File Systems 522
Discovering SMB Shares 523
Mounting SMB Shares 525
Authenticating to SMB Shares 525
Accessing Samba Shares Through the Graphical Interface 526
Mounting Remote File Systems Through fstab 528
Mounting NFS Shares Through fstab 528
Mounting SMB Shares Through fstab 529
Using Automount to Mount Remote File Systems 530
Understanding Automount 530
Configuring Automount for NFS 531
Using Wildcards in Automount 532
Using Automount to Mount SMB Shares 533
Configuring an FTP Server 533
Summary 535
Exam Preparation Tasks 535
Review All Key Topics 535
Complete Tables and Lists from Memory 536
Define Key Terms 536
Review Questions 536
End-of-Chapter Labs 537
Lab 23.1 537
Chapter 24 Configuring Time Services 539
“Do I Know This Already?” Quiz 539
Foundation Topics 542
Understanding Local Time 542
Using Network Time Protocol 543
Managing Time on Red Hat Enterprise Linux 543
Using date 544
Using hwclock 544
Using timedatectl 545
Managing Time Zone Settings 548
Using Graphical Tools to Manage Time 550
Summary 551
Exam Prep Tasks 551
Review All Key Topics 551
Complete Tables and Lists from Memory 551
Define Key Terms 552
Review Questions 552
End-of-Chapter Labs 552
Lab 24.1 552
Part 2 RHCE 555
Chapter 25 Configuring External Authentication and Authorization 557
“Do I Know This Already?” Quiz 557
Foundation Topics 560
Understanding Remote Authentication 560
Understanding Kerberos Basics 561
Understanding Kerberos Authentication 561
Understanding Kerberos Principals 563
Configuring LDAP Authentication with Kerberos Authorization 564
Using nslcd or sssd as the Authentication Backend Service 568
Setting Up External Authentication 569
Using an IPA Server or Active Directory 572
Summary 572
Exam Preparation Tasks 573
Review All Key Topics 573
Complete Tables and Lists from Memory 573
Define Key Terms 573
Review Questions 573
End-of-Chapter Labs 574
Lab 25.1 574
Chapter 26 Configuring an iSCSI SAN 577
“Do I Know This Already” Quiz 578
Foundation Topics 581
Understanding iSCSI 581
Comparing SAN Solutions 581
Software Versus Hardware iSCSI SAN 582
iSCSI SAN Architecture 582
iSCSI SAN Terminology 583
Setting Up the iSCSI Target 585
Opening the Firewall 594
Setting Up the iSCSI Initiator 596
Setting the iSCSI Initiatorname 596
Performing the Discovery 596
Making the Connection 598
Making iSCSI Connections Persistent 600
Troubleshooting iSCSI 602
Summary 603
Exam Preparation Tasks 603
Review All Key Topics 603
Complete Tables and Lists from Memory 603
Define Key Terms 604
Review Questions 604
End-of-Chapter Labs 604
Lab 26.1 604
Lab 26.2 605
Lab 26.3 605
Chapter 27 System Performance Reporting 607
“Do I Know This Already?” Quiz 607
Foundation Topics 610
Understanding top Performance Data 610
Understanding Load Average 610
CPU Performance Data 611
Memory Usage 612
Understanding Swap Usage 613
Process Memory Usage 615
Customizing top Display 615
Using iostat, vmstat, and pidstat 616
Using iostat 617
Using vmstat 618
Using pidstat 620
Configuring sar 621
Summary 622
Exam Preparation Tasks 622
Review All Key Topics 622
Complete Tables and Lists from Memory 623
Define Key Terms 623
Review Questions 623
End-of-Chapter Labs 624
Chapter 28 System Optimization Basics 627
“Do I Know This Already?” Quiz 627
Foundation Topics 630
Understanding System Optimization Basics 630
Understanding the /proc File System 631
Using /proc to Analyze Performance 631
Using /proc/sys to Tune Linux Performance 633
Using sysctl to Automate System Optimization Parameters 635
Summary 637
Exam Preparation Tasks 638
Review All Key Topics 638
Complete Tables and Lists from Memory 638
Define Key Terms 638
Review Questions 639
End-of-Chapter Labs 639
Lab 28.1 639
Chapter 29 Configuring Advanced Log Features 641
“Do I Know This Already?” Quiz 641
Foundation Topics 644
Understanding rsyslogd Modules 644
Understanding the Need for Modules 644
Using Modules in rsyslog Configuration 645
Connecting journald to rsyslog 646
Configuring Remote Logging 648
Understanding the Need for Remote Log Servers 648
Configuring Remote Logging 649
Summary 651
Exam Preparation Tasks 651
Review All Key Topics 651
Complete Tables and Lists from Memory 651
Define Key Terms 651
Review Questions 652
End-of-Chapter Labs 652
Lab 29.1 652
Chapter 30 Configuring Routing and Advanced Networking 655
“Do I Know This Already?” Quiz 655
Foundation Topics 658
Configuring Aggregated Network Interfaces 658
Using Bonding 658
Using Teaming 663
Configuring Network Teams 663
Looking Behind the Teaming Configuration 666
Troubleshooting Network Teaming 671
Configuring IPv6 Addresses 673
Understanding IPv6 Addresses 673
Managing IPv6 Address Configurations 675
Troubleshooting IPv6 676
Routing IP Traffic 677
Enabling Routing 677
Configuring Custom Routes 678
Summary 679
Exam Preparation Tasks 679
Review All Key Topics 679
Complete Tables and Lists from Memory 680
Define Key Terms 680
Review Questions 680
End-of-Chapter Labs 681
Lab 30.1 681
Chapter 31 An Introduction to Bash Shell Scripting 683
“Do I Know This Already?” Quiz 683
Foundation Topics 686
Understanding Shell Scripting Core Elements 686
Using Variables and Input 687
Using Positional Parameters 688
Working with Variables 689
Using Conditional Loops 691
Working with if then else 692
Using || and && 693
Applying for 693
Understanding while and until 695
Understanding case 696
Bash Shell Script Debugging 697
Summary 698
Exam Preparation Tasks 698
Review All Key Topics 698
Define Key Terms 699
Review Questions 699
End-of-Chapter Labs 699
Lab 31.1 699
Chapter 32 Advanced Firewall Configuration 701
“Do I Know This Already?” Quiz 701
Foundation Topics 705
Excluding Iptables Services 705
Creating Firewalld Services 706
Configuring Firewalld Rich Rules 708
Rich Rule Syntax 708
Ordering 709
Managing Rich Rules 709
Logging with Rich Rules 711
Configuring Network Address Translation 711
Configuring Masquerading 712
Configuring Port Forwarding 713
Summary 715
Exam Preparation Tasks 716
Review All Key Topics 716
Complete Tables and Lists from Memory 716
Define Key Terms 716
Review Questions 716
End-of-Chapter Labs 717
Lab 32.1 717
Chapter 33 Managing Advanced Apache Services 719
“Do I Know This Already?” Quiz 719
Foundation Topics 723
Revising Apache Basics 723
Essential Apache Parameters 723
Revising Apache SELinux-Related Settings 725
Configuring Write Access to the DocumentRoot 726
Configuring TLS Security 727
Understanding TLS Security 728
Configuring Apache for Using TLS Certificates 729
Deploying CGI Applications 731
Using Common Gateway Interface 731
Serving Dynamic PHP Content 732
Using Dynamic Python Content 733
Connecting to Databases 733
Configuring Private Directories 735
Summary 736
Exam Preparation Tasks 737
Review All Key Topics 737
Complete Tables and Lists from Memory 737
Define Key Terms 737
Review Questions 737
End-of-Chapter Labs 738
Lab 33.1 738
Chapter 34 Configuring DNS 741
“Do I Know This Already?” Quiz 741
Foundation Topics 744
Understanding DNS 744
The DNS Hierarchy 744
DNS Terminology 745
Understanding DNS Lookups 745
Understanding Resource Records 747
Setting Up a Cache-Only DNS Server 749
Understanding the Need for DNSSEC 749
Configuring the Unbound Caching Name Server 749
Configuring Trust Anchors 751
Troubleshooting DNS Issues 752
Dumping and Changing the Unbound Cache 753
Using dig 753
Analyzing Client Issues 755
Summary 755
Exam Preparation Tasks 755
Review All Key Topics 755
Complete Tables and Lists from Memory 756
Define Key Terms 756
End-of-Chapter Labs 757
Lab 34.1 757
Chapter 35 Configuring a MariaDB Database 759
“Do I Know This Already?” Quiz 759
Foundation Topics 762
MariaDB Base Configuration 762
Performing Simple Database Administration Tasks 768
Managing Users 771
MariaDB Backup and Restore 773
Summary 776
Exam Preparation Tasks 777
Review All Key Topics 777
Complete Tables and Lists from Memory 777
Define Key Terms 777
Review Questions 777
End-of-Chapter Labs 778
Lab 35.1 778
Chapter 36 Configuring NFS 781
“Do I Know This Already?” Quiz 781
Foundation Topics 785
Setting Up the Basic NFSv4 Server 785
Configuring the NFSv4 Server 785
Accessing NFS Shares 787
Testing Client Access with showmount 787
Making NFS Mounts Persistent 788
Configuring the Firewall for NFSv4 788
Configuring SELinux for NFSv4 788
Configuring NFS Kerberos Authentication 791
Understanding NFSv4 SELinux Transparency 795
Summary 796
Exam Prep Tasks 796
Review All Key Topics 796
Define Key Terms 797
Review Questions 797
End-of-Chapter Labs 798
Lab 36.1 798
Chapter 37 Configuring Samba File Services 801
“Do I Know This Already?” Quiz 801
Foundation Topics 804
Setting Up SMB File Sharing 804
Installing Samba 804
Preparing Shared Directories on Linux 804
Configuring /etc/samba/smb.conf 805
Using Samba Users 808
Securing Samba 810
Samba-Related SELinux Parameters 810
Samba Firewalling 811
Setting Up Kerberized Samba Shares 813
Accessing SMB Shares 815
Discovering Samba Shares 815
Mounting Samba Shares 816
Performing a Multiuser Samba Mount 817
Mounting Samba Shares Through automount 819
Summary 820
Exam Preparation Tasks 820
Review All Key Topics 820
Complete Tables and Lists from Memory 821
Define Key Terms 821
Review Questions 821
End-of-Chapter Labs 822
Lab 37.1 822
Chapter 38 Setting Up an SMTP Server 825
Do I Know This Already Quiz 825
Foundation Topics 828
Understanding Email Basics 828
Understanding Roles in Mail Handling 828
The Email Transmission Process 829
Mail Server Solutions on RHEL 7 830
Configuring Postfix Parameters 832
Understanding Essential Parameters 833
Configuring Postfix to Relay Mail 835
Verifying a Working Mail Configuration 838
Summary 840
Exam Preparation Tasks 840
Review All Key Topics 840
Complete Tables and Lists from Memory 841
Define Key Terms 841
Review Questions 841
End-of-Chapter Labs 842
Lab 38.1 842
Chapter 39 Configuring SSH 845
“Do I Know This Already?” Quiz 845
Foundation Topics 848
Hardening the SSH Server 848
Limiting Root Access 848
Configuring Alternative Ports 849
Modifying SELinux to Allow for Port Changes 849
Limiting User Access 850
Using Other Useful sshd Options 851
Session Options 852
Connection Keepalive Options 852
Configuring Key-Based Authentication with Passphrases 853
Configuring SSH Tunnels 854
Summary 856
Exam Preparation Tasks 856
Review All Key Topics 856
Complete Tables and Lists from Memory 856
Define Key Terms 856
Review Questions 857
End-of-Chapter Labs 857
Lab 39.1 857
Chapter 40 Managing Time Synchronization 859
“Do I Know This Already?” Quiz 859
Foundation Topics 862
Understanding the Need for Synchronized Time 862
Setting Up Time Synchronization 862
Understanding NTP 863
Configuring chrony to Synchronize Time 864
Managing and Monitoring Time Synchronization with chronyc 866
Summary 871
Exam Preparation Tasks 871
Review All Key Topics 871
Complete Tables and Lists from Memory 872
Define Key Terms 872
Review Questions 872
End-of-Chapter Labs 873
Lab 40.1 873
Chapter 41 Final Preparation 875
Generic Tips 875
Verifying Your Readiness 875
Registering for the Exam 876
On Exam Day 876
During the Exam 877
The Nondisclosure Agreement 878
Chapter 42 Theoretical Pre-Assessment Exams 881
RHCSA Theoretical Pre-Assessment Exam 881
RHCSA Practice Exam A 887
RHCSA Practice Exam B 891
RHCE Practice Exam A 895
RHCE Practice Exam B 899
9780789754059, TOC, 6/26/2015