Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Guía de instalación

Red Hat Cluster Suite Overview

Red Hat Cluster Suite for

Red Hat Enterprise Linux

5.1

ISBN: N/A

Publication date:

Red Hat Cluster Suite Overview provides an overview of Red Hat Cluster Suite for Red Hat

Enterprise Linux 5.1

Red Hat Cluster Suite Overview

Red Hat Cluster Suite Overview: Red Hat Cluster Suite for

Red Hat Enterprise Linux 5.1

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Red Hat Cluster Suite Overview

Introduction ..............................................................................................................vii

1. Document Conventions ................................................................................ viii

2. Feedback ......................................................................................................ix

1. Red Hat Cluster Suite Overview .............................................................................. 1

1. Cluster Basics ................................................................................................ 1

2. Red Hat Cluster Suite Introduction .................................................................. 2

3. Cluster Infrastructure ...................................................................................... 4

3.1. Cluster Management ........................................................................... 5

3.2. Lock Management ............................................................................... 6

3.3. Fencing .............................................................................................. 6

3.4. Cluster Configuration System ..............................................................11

4. High-availability Service Management ............................................................13

5. Red Hat GFS ................................................................................................16

5.1. Superior Performance and Scalability ..................................................18

5.2. Performance, Scalability, Moderate Price .............................................18

5.3. Economy and Performance .................................................................19

6. Cluster Logical Volume Manager ....................................................................20

7. Global Network Block Device .........................................................................24

8. Linux Virtual Server .......................................................................................25

8.1. Two-Tier LVS Topology ......................................................................27

8.2. Three-Tier LVS Topology ....................................................................30

8.3. Routing Methods ................................................................................32

8.4. Persistence and Firewall Marks ...........................................................35

9. Cluster Administration Tools ..........................................................................36

9.1. Conga ...............................................................................................36

9.2. Cluster Administration GUI ..................................................................39

9.3. Command Line Administration Tools ...................................................42

10. Linux Virtual Server Administration GUI ........................................................43

10.1. CONTROL/MONITORING ................................................................44

10.2. GLOBAL SETTINGS ........................................................................46

10.3. REDUNDANCY ................................................................................47

10.4. VIRTUAL SERVERS ........................................................................48

2. Red Hat Cluster Suite Component Summary ..........................................................57

1. Cluster Components .....................................................................................57

2. Man Pages ...................................................................................................62

3. Compatible Hardware ....................................................................................65

Index .......................................................................................................................67

Introduction

This document provides a high-level overview of Red Hat Cluster Suite for Red Hat Enterprise

Linux 5 and is is organized as follows:

•Chapter 1, Red Hat Cluster Suite Overview

•Chapter 2, Red Hat Cluster Suite Component Summary

Although the information in this document is an overview, you should have advanced working

knowledge of Red Hat Enterprise Linux and understand the concepts of server computing to

gain a good comprehension of the information.

For more information about using Red Hat Enterprise Linux, refer to the following resources:

•Red Hat Enterprise Linux Installation Guide — Provides information regarding installation of

Red Hat Enterprise Linux 5.

•Red Hat Enterprise Linux Deployment Guide — Provides information regarding the

deployment, configuration and administration of Red Hat Enterprise Linux 5.

For more information about Red Hat Cluster Suite for Red Hat Enterprise Linux 5, refer to the

following resources:

•Configuring and Managing a Red Hat Cluster — Provides information about installing,

configuring and managing Red Hat Cluster components.

•LVM Administrator's Guide: Configuration and Administration — Provides a description of the

Logical Volume Manager (LVM), including information on running LVM in a clustered

environment.

•Global File System: Configuration and Administration — Provides information about installing,

configuring, and maintaining Red Hat GFS (Red Hat Global File System).

•Using Device-Mapper Multipath — Provides information about using the Device-Mapper

Multipath feature of Red Hat Enterprise Linux 5.

•Using GNBD with Global File System — Provides an overview on using Global Network Block

Device (GNBD) with Red Hat GFS.

•Linux Virtual Server Administration — Provides information on configuring high-performance

systems and services with the Linux Virtual Server (LVS).

•Red Hat Cluster Suite Release Notes — Provides information about the current release of

Red Hat Cluster Suite.

Red Hat Cluster Suite documentation and other Red Hat documents are available in HTML,

vii

PDF, and RPM versions on the Red Hat Enterprise Linux Documentation CD and online at

http://www.redhat.com/docs/.

1. Document Conventions

Certain words in this manual are represented in different fonts, styles, and weights. This

highlighting indicates that the word is part of a specific category. The categories include the

following:

Courier font

Courier font represents commands,file names and paths, and prompts .

When shown as below, it indicates computer output:

Desktop about.html logs paulwesterberg.png

Mail backupfiles mail reports

bold Courier font

Bold Courier font represents text that you are to type, such as: service jonas start

If you have to run a command as root, the root prompt (#) precedes the command:

#gconftool-2

italic Courier font

Italic Courier font represents a variable, such as an installation directory:

install_dir/bin/

bold font

Bold font represents application programs and text found on a graphical interface.

When shown like this: OK , it indicates a button on a graphical application interface.

Additionally, the manual uses different strategies to draw your attention to pieces of information.

In order of how critical the information is to you, these items are marked as follows:

Note

A note is typically information that you need to understand the behavior of the

system.

Introduction

viii

Tip

A tip is typically an alternative way of performing a task.

Important

Important information is necessary, but possibly unexpected, such as a

configuration change that will not persist after a reboot.

Caution

A caution indicates an act that would violate your support agreement, such as

recompiling the kernel.

Warning

A warning indicates potential data loss, as may happen when tuning hardware

for maximum performance.

2. Feedback

If you spot a typo, or if you have thought of a way to make this document better, we would love

to hear from you. Please submit a report in Bugzilla (http://bugzilla.redhat.com/bugzilla/) against

the component rh-cs.

Be sure to mention the document's identifier:

sac_cl_over(EN)-5.1 (2008-06-01:T14:06)

By mentioning this document's identifier, we know exactly which version of the guide you have.

If you have a suggestion for improving the documentation, try to be as specific as possible. If

you have found an error, please include the section number and some of the surrounding text

so we can find it easily.

Feedback

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