Official Ubuntu Server Book, Portable Documents, The

Preface xxi Acknowledgments xxvii

About the Authors xxix

Introduction xxxi





Chapter 1: Installation 1

Get Ubuntu 2

Boot Screen 3

Disk Partitioning 5

Server Roles 13

Installer Console 15

Reboot the System 16



Chapter 2: Essential System Administration 17

Basic Command-Line Administration 18

Ubuntu Boot Process 24

File System Hierarchy 39

Networking 45



Chapter 3: Package Management 51

Introduction to Package Management 52

Debian Packages 60

Package Management in Ubuntu 63

Making Your Own Packages 77



Chapter 4: Automated Ubuntu Installs 83

Preseeding 84

Kickstart 104

PXE Boot Server Deployment 111

Customize Automated Installs 118



Chapter 5: Guide to Common Ubuntu Servers 125

DNS Server 126

Web Server 135

Mail Server 144

POP/IMAP Server 156

OpenSSH Server 158

DHCP Server 160

Database Server 163

File Server 172

Edubuntu and LTSP 179

LTSP Server Configurations 184



Chapter 6: Security 199

General Security Principles 200

Sudo 201

AppArmor 206

SSH Security 210

Firewalls 214

Intrusion Detection 226

Incident Response 232



Chapter 7: Backups 237

Backup Principles 238

Drive Imaging 240

Database Backups 242

BackupPC 247



Chapter 8: Monitoring 265

Local Monitoring Tools 266

Ganglia 271

Nagios 278



Chapter 9: Virtualization 295

KVM 296

VMware Server 313

Ubuntu Enterprise Cloud 324



Chapter 10: Fault Tolerance 333

Fault Tolerance Principles 334

RAID 335

LVM 361

Ethernet Bonding 364

Clusters 369



Chapter 11: Troubleshooting 391

General Troubleshooting Philosophy 392

Localhost Troubleshooting 395

Network Troubleshooting 408

Hardware Troubleshooting 417



Chapter 12: Rescue and Recovery 421

Ubuntu Recovery Mode 422

Ubuntu Server Recovery CD 427

Ubuntu Desktop Live CD 431



Chapter 13: Help and Resources 441

Paid Support from Canonical 442

Forums 443

Internet Relay Chat 444

Mailing Lists 447

Online Documentation 448

Localhost Documentation 449

Local Community Teams 450

Other Languages 451

Tech Answers System (Launchpad) 451

Bug Reporting 451

Summary 453



Chapter 14: Basic Linux Administration 455

Shell Globs 456

Pipes and Redirection 458

File Permissions and Ownership 464

Linux File Types 466

At and Cron 470



Appendix: Cool Tips and Tricks 477

Avoid That grep Command in grep Output 477

Shortcut to a Command Path 478

Wipe a Drive in One Line 478

Run a Command Over and Over 479

Make a Noise When the Server Comes Back Up 479

Search and Replace Text in a File 479

find and exec Commands 480

Bash Commands with Too Many Arguments 480

Use Your Bash History 481

Are These Files Identical? 481

Go Back to Your Previous Directory 481

Find Out Who Is Tying Up a File System You Want to Unmount 482

Send a Test E-mail Using telnet 482

Easy SSH Key Sharing 483

Get the Most Out of Dig 484



Index 487