Red Hat Enterprise Linux 6 Administration

The definitive guide to administering a Red Hat Enterprise Linux 6 network

Linux professionals who need a go-to guide on version 6 of Red Hat Enterprise Linux (RHEL) will find what they need in this comprehensive Sybex book. It covers RHEL administration in detail, including how to set up and manage web and mail services, use RHEL in enterprise environments, secure it, optimize storage, configure for virtualization and high availability, and much more. It also provides a great study aid for those preparing for either the RHCSA or RHCE certification exam.

• Red Hat is the Linux market leader, and Red Hat administrators are in demand
• This Sybex guide is a comprehensive resource on Red Hat Enterprise Linux administration and useful for those preparing for one of the Red Hat certification exams
• Covers setting up and managing web and mail services, using RHEL in enterprise environments, securing RHEL, and optimizing storage to fit your environment
• Explores advanced RHEL configurations, including virtualization and high availability

Red Hat Enterprise Linux 6 Administration is the guide Linux professionals and Red Hat administrators need to stay current on the newest version.

Introduction xxvii

Assessment Test xxxiii

Part I Getting Familiar with Red Hat Enterprise Linux 1

Chapter 1 Getting Started with Red Hat Enterprise Linux 3

Chapter 2 Finding Your Way on the Command Line 41

Part II Administering Red Hat Enterprise Linux 67

Chapter 3 Performing Daily System Administration Tasks 69

Chapter 4 Managing Software 99

Chapter 5 Configuring and Managing Storage 121

Chapter 6 Connecting to the Network 155

Part III Securing Red Hat Enterprise Linux 187

Chapter 7 Working with Users, Groups, and Permissions 189

Chapter 8 Understanding and Configuring SELinux 229

Chapter 9 Working with KVM Virtualization 245

Chapter 10 Securing Your Server with iptables 269

Chapter 11 Setting Up Cryptographic Services 293

Part IV Networking Red Hat Enterprise Linux 313

Chapter 12 Configuring OpenLDAP 315

Chapter 13 Configuring Your Server for File Sharing 333

Chapter 14 Configuring DNS and DHCP 355

Chapter 15 Setting Up a Mail Server 375

Chapter 16 Configuring Apache on Red Hat Enterprise Linux 385

Part V Advanced Red Hat Enterprise Linux Configuration 411

Chapter 17 Monitoring and Optimizing Performance 413

Chapter 18 Introducing Bash Shell Scripting 467

Chapter 19 Understanding and Troubleshooting the Boot Procedure 505

Chapter 20 Introducing High-Availability Clustering 529

Chapter 21 Setting Up an Installation Server 561

Glossary 577

Appendix A Hands-On Labs 595

Appendix B Answers to Hands-On Labs 607

Index 625

Sander van Vugt is an independent technical trainer, consultant, and author of numerous titles on Linux. He has been using Linux almost since its inception, having first used it in 1992. Sander currently spends much of his time travelling around the world teaching Linux, including Red Hat. He is also a regular contributor to such publications as searchenterpriselinux.com and a frequent speaker at the leading Linux conferences.

Take Your Career to the Next Level with This Practical Guide

If you want to excel as a Red Hat Enterprise Linux (RHEL) administrator, start with this definitive guide. Whether you're just beginning or are already an experienced RHEL admin looking to brush up on such things as setting up web servers, clustering, or DNS and DHCP, this book explores real-world tasks and scenarios you'll face on the job and shows you step by step how to handle them. It's also a valuable supplement if you're preparing for the RHCSA or RHCE certification exams.

• Review the command line, software management, and booting
• Learn routine RHEL system admin tasks such as mounting and unmounting file systems, setting up a print environment, and scheduling jobs with cron
• Manage storage, including partitions, logical and encrypted volumes, and swap space
• Configure networking from the command line and set up IPv6
• Understand and configure SELinux and set up a firewall and cryptographic services
• Set up local file sharing, a LAMP Server, a mail server, and DNS and DHCP
• Learn advanced RHEL techniques, such as configuring virtualization and HA, automating with shell scripting, and optimizing CPU performance

An ideal supplement if you're preparing for these exams:

Red Hat Certified System Administrator (RHCSA)

Red Hat Certified Engineer (RHCE)