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Linux Administration Handbook by Evi Nemeth, Garth Snyder, Trent R. Hein

Linux Administration Handbook by Evi Nemeth, Garth Snyder, Trent R. Hein

Linux Administration Handbook (Paperback)

by Evi Nemeth, Garth Snyder, Trent R. Hein

Product Details:

Language:                       English

ISBN 10:                                               0-13-148004-9 /

                     ISBN 13:                        9780131480049

Author:                          Evi Nemeth, Garth Snyder, Trent R. Hein

Publisher:                      Prentice Hall PTR

Subject:                         Linux System Administration

Place of publication:     USA

Year Published:             2006

Edition               Second

Binding:                         Paperback

Pages:                xxxvii + 1002

Dimensions:      23.4 x 17.6 x 3.8 cm / 9.2 x 6.9 x 1.5 inches

Shipping Weight:           1.5 Kg / 3.2 pounds

Price:                  270 SEK

New

Synopsis:

The first edition of this book became known for its thorough and lucid coverage of some of the toughest topics in system administration including DNS, sendmail and security. The new edition will focus on many open source tools that have gained acceptance since 1/e was published, including Nagios for network monitoring.

Most titles on Linux administration focus on the configuration of a single box. LAH was the first title in this area to focus on the administration of a Linux system in a production environment. Linux Administration Handbook examines how Linux systems behave in real-world ecosystems, not how they might behave in ideal environments. The Second Edition incorporates the changes in Linux systems in the past 18 months, which include current versions of RedHat, SuSE and Debian systems, new topics like Logical Volume Manager, X11 basic administration and Nagios. Chapters on system admin policy, bind, sendmail and security have been updated.

Major revision of must-have guide for Linux administrators working in production environments.

  • Full section on LVM, Logical Voume Manager, subsystem for on-line disk storage management
  • X11 basic administration and
  • Significantly expanded coverage of patch management
  • Nagios, open source host and network monitoring program

Back Cover

“As this book shows, Linux systems are just as functional, secure, and reliable as their proprietary counterparts. Thanks to the ongoing efforts of thousands of Linux developers, Linux is more ready than ever for deployment at the frontlines of the real world. The authors of this book know that terrain well, and I am happy to leave you in their most capable hands.”
-Linus Torvalds“The most successful sysadmin book of all time-because it works!”
-Rik Farrow, editor of ;login:“This book clearly explains current technology with the perspective of decades of experience in large-scale system administration. Unique and highly recommended.”
-Jonathan Corbet, cofounder, LWN.net“Nemeth et al. is the overall winner for Linux administration: it's intelligent, full of insights, and looks at the implementation of concepts.”
-Peter Salus, editorial director, Matrix.net

Since 2001, Linux Administration Handbook has been the definitive resource for every Linux® system administrator who must efficiently solve technical problems and maximize the reliability and performance of a production environment. Now, the authors have systematically updated this classic guide to address today's most important Linux distributions and most powerful new administrative tools.

The authors spell out detailed best practices for every facet of system administration, including storage management, network design and administration, web hosting, software configuration management, performance analysis, Windows interoperability, and much more. Sysadmins will especially appreciate the thorough and up-to-date discussions of such difficult topics such as DNS, LDAP, security, and the management of IT service organizations.

Linux® Administration Handbook, Second Edition, reflects the current versions of these leading distributions:

  • Red Hat® Enterprise Linux®
  • FedoraTM Core
  • SUSE® Linux Enterprise
  • Debian® GNU/Linux
  • Ubuntu® Linux

Sharing their war stories and hard-won insights, the authors capture the behavior of Linux systems in the real world, not just in ideal environments. They explain complex tasks in detail and illustrate these tasks with examples drawn from their extensive hands-on experience.

About the Authors:

Evi Nemeth is retired from the computer science faculty at the University of Colorado and is a senior staff member in network research at CAIDA, the Cooperative Association for Internet Data Analysis at the San Diego Supercomputer Center.

Garth Snyder has worked at NeXT and Sun and holds a degree in electrical engineering from Swarthmore College. He recently received an M.D./M.B.A. from the University of Rochester.

Trent R. Hein is the cofounder of Applied Trust Engineering, a company that provides network infrastructure security and performance consulting services. Trent holds a B.S. in computer science from the University of Colorado

Table of Contents

Foreword to the First Edition xxxiii

Preface xxxiv

Acknowledgments xxxvii

Section One: Basic Administration 1

Chapter 1: Where to Start 3

Suggested background 4

Linux's relationship to UNIX 4

Linux in historical context 5

Linux distributions 6

Notation and typographical conventions 9

Where to go for information 11

How to find and install software 14

Essential tasks of the system administrator 16

System administration under duress 18

Recommended reading 19

Exercises 20

Chapter 2: Booting and Shutting Down 21

Bootstrapping 21

Booting PCs 25

Using boot loaders: LILO and GRUB 26

Booting single-user mode 31

Working with startup scripts 32

Rebooting and shutting down 40

Exercises 43

Chapter 3: Rootly Powers 44

Ownership of files and processes 44

The superuser 46

Choosing a root password 47

Becoming root 48

Other pseudo-users 51

Exercises 52

Chapter 4: Controlling Processes 53

Components of a process 53

The life cycle of a process 56

Signals 57

kill and killall: send signals 60

Process states 60

nice and renice: influence scheduling priority 61

ps: monitor processes 62

top: monitor processes even better 65

The /proc filesystem 65

strace: trace signals and system calls 66

Runaway processes 67

Recommended reading 69

Exercises 69

Chapter 5: The Filesystem 70

Pathnames 72

Filesystem mounting and unmounting 73

The organization of the file tree 75

File types 76

File attributes 81

Access control lists 88

Exercises 92

Chapter 6: Adding New Users 93

The /etc/passwd file 93

The /etc/shadow file 99

The /etc/group file 101

Adding users 102

Removing users 107

Disabling logins 108

Managing accounts 108

Exercises 110

Chapter 7: Adding a Disk 111

Disk interfaces 111

Disk geometry 119

Linux filesystems 120

An overview of the disk installation procedure 122

hdparm: set IDE interface parameters 129

fsck: check and repair filesystems 131

Adding a disk: a step-by-step guide 133

Advanced disk management: RAID and LVM 138

Mounting USB drives 147

Exercises 148

Chapter 8: Periodic Processes 150

cron: schedule commands 150

The format of crontab files 151

Crontab management 153

Some common uses for cron 154

Other schedulers: anacron and fcron 156

Exercises 157

Chapter 9: Backups 158

Motherhood and apple pie 159

Backup devices and media 163

Setting up an incremental backup regime with dump 169

Restoring from dumps with restore 173

Dumping and restoring for upgrades 176

Using other archiving programs 177

Using multiple files on a single tape 178

Bacula 179

Commercial backup products 197

Recommended reading 198

Exercises 198

Chapter 10: Syslog and Log Files 201

Logging policies 201

Linux log files 204

logrotate: manage log files 208

Syslog: the system event logger 209

Condensing log files to useful information 220

Exercises 222

Chapter 11: Software and Configuration Management 223

Basic Linux installation 223

Diskless clients 232

Package management 234

High-level package management systems 237

Revision control 247

Localization and configuration 255

Configuration management tools 260

Sharing software over NFS 263

Recommended software 266

Recommended reading 268

Exercises 268

Section Two: Networking 269Chapter 12: TCP/IP Networking 271

TCP/IP and the Internet 272

Networking road map 275

Packets and encapsulation 276

IP addresses: the gory details 282

Routing 293

ARP: the address resolution protocol 296

Addition of a machine to a network 297

Distribution-specific network configuration 307

DHCP: the Dynamic Host Configuration Protocol 311

Dynamic reconfiguration and tuning 314

Security issues 316

Linux NAT 319

PPP: the Point-to-Point Protocol 320

Linux networking quirks 330

Recommended reading 331

Exercises 332

Chapter 13: Routing 334

Packet forwarding: a closer look 335

Routing daemons and routing protocols 337

Protocols on parade 341

routed: RIP yourself a new hole 343

gated: gone to the dark side 344

Routing strategy selection criteria 344

Cisco routers 346

Recommended reading 348

Exercises 349

Chapter 14: Network Hardware 350

LAN, WAN, or MAN? 351

Ethernet: the common LAN 351

Wireless: nomad's LAN 359

FDDI: the disappointing, expensive, and outdated LAN 361

ATM: the promised (but sorely defeated) LAN 362

Frame relay: the sacrificial WAN 363

ISDN: the indigenous WAN 364

DSL and cable modems: the people's WAN 364

Where is the network going? 365

Network testing and debugging 366

Building wiring 366

Network design issues 368

Management issues 370

Recommended vendors 371

Recommended reading 372

Exercises 372

Chapter 15: DNS: The Domain Name System 373

DNS for the impatient: adding a new machine 374

The history of DNS 375

Who needs DNS? 377

The DNS namespace 378

How DNS works 383

What's new in DNS 386

The DNS database 389

The BIND software 409

Designing your DNS environment 415

BIND client issues 418

BIND server configuration 420

BIND configuration examples 439

Starting named 446

Updating zone files 447

Security issues 451

Testing and debugging 466

Distribution specifics 478

Recommended reading 481

Exercises 482

Chapter 16: The Network File System 484

General information about NFS 484

Server-side NFS 489

Client-side NFS 492

nfsstat: dump NFS statistics 495

Dedicated NFS file servers 496

Automatic mounting 497

Recommended reading 500

Exercises 501

Chapter 17: Sharing System Files 502

What to share 503

nscd: cache the results of lookups 504

Copying files around 505

NIS: the Network Information Service 511

LDAP: the Lightweight Directory Access Protocol 520

Recommended reading 526

Exercises 527

Chapter 18: Electronic Mail 528

Mail systems 530

The anatomy of a mail message 534

Mail philosophy 539

Mail aliases 544

Mailing lists and list wrangling software 551

sendmail: ringmaster of the electronic mail circus 557

sendmail configuration 565

Basic sendmail configuration primitives 570

Fancier sendmail configuration primitives 574

Spam-related features in sendmail 588

Configuration file case study 599

Security and sendmail 603

sendmail performance 611

sendmail statistics, testing, and debugging 615

The Exim Mail System 621

Postfix 623

Recommended reading 639

Exercises 640

Chapter 19: Network Management and Debugging 643

Network troubleshooting 644

ping: check to see if a host is alive 645

traceroute: trace IP packets 647

netstat: get network statistics 649

sar: inspect live interface activity 654

Packet sniffers 655

Network management protocols 657

SNMP: the Simple Network Management Protocol 659

The NET-SMNP agent 661

Network management applications 662

Recommended reading 667

Exercises 668

Chapter 20: Security 669

Is Linux secure? 670

How security is compromised 671

Certifications and standards 673

Security tips and philosophy 676

Security problems in /etc/passwd and /etc/shadow 678

POSIX capabilities 683

Setuid programs 683

Important file permissions 684

Miscellaneous security issues 685

Security power tools 688

Cryptographic security tools 694

Firewalls 701

Linux firewall features: IP tables 704

Virtual private networks (VPNs) 708

Hardened Linux distributions 710

What to do when your site has been attacked 710

Sources of security information 712

Recommended reading 715

Exercises 716

Chapter 21: Web Hosting and Internet Servers 719

Web hosting basics 720

HTTP server installation 724

Virtual interfaces 727

The Secure Sockets Layer (SSL) 730

Caching and proxy servers 733

Anonymous FTP server setup 734

Exercises 736

Section Three: Bunch O' Stuff 739

Chapter 22: The X Window System 741

The X display manager 743

Running an X application 744

X server configuration 748

Troubleshooting and debugging 754

A brief note on desktop environments 757

Recommended Reading 759

Exercises 759

Chapter 23: Printing 761

Printers are complicated 762

Printer languages 763

CUPS architecture 767

CUPS server administration 772

Troubleshooting tips 780

Printer practicalities 782

Other printer advice 784

Printing under KDE 788

Recommended reading 790


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