Table of Contents

HACMP for Linux: Installation and Administration Guide

Contents

About This Guide

Chapter 1: HACMP for Linux Cluster Overview

Overview

Related Cluster Information

Cluster Terminology

Sample Configuration with a Diagram

Node and Network Failure Scenarios

Node Failure

Network Failure

Network Interface Failure

Where You Go from Here

Chapter 2: Planning and Installing HACMP for Linux

Cluster Hardware

Hardware for Cluster Nodes

Hardware for Cluster Networks

Hardware for Cluster Storage

Cluster Software

Planning the HACMP Configuration

Planning Applications

Planning HACMP Nodes

Planning for Resource Groups in an HACMP Cluster

Resource Group Policies: Overview

Planning IP Networks and Network Interfaces

Installing HACMP for Linux

Software Prerequisites for Installation

Contents of the Installation Media

Installation Process Overview

Installing HACMP for Linux RPMs

Installing and Configuring WebSMIT

Verifying the Installed Cluster Software

Entries Added to System Directories after Installation

Addressing Problems during Installation

Security Considerations

WebSMIT Security

Where You Go from Here

Chapter 3: Common Task Summary

Features

Configuration Requirements

Understanding Cluster Network Requirements and Heartbeating

Launching the WebSMIT Interface

Starting WebSMIT

WebSMIT Tasks Overview

Tasks for Configuring a Basic Cluster

Defining a Cluster Name

Adding Nodes and Establishing Communication Paths

Configuring Serial Networks for Heartbeating

Adding IP-Based Networks

Configuring Communication Interfaces/Devices to HACMP

Adding Persistent IP Labels for Cluster Administration Purposes

Verifying the Networks and Network Interfaces Configuration

Configuring Resources to Make Highly Available

Configuring Service IP Labels

Configuring HACMP Application Servers

Configuring Application Servers

Configuring Application Monitors

Including Resources into Resource Groups

Synchronizing the HACMP Cluster Configuration

Displaying the HACMP Cluster Configuration

Viewing the Cluster Status

System Management (C-SPOC) Tasks

Starting HACMP Cluster Services

Stopping HACMP Cluster Services

Managing Resource Groups and Applications

Viewing and Managing Logs

List of Reserved Words

Where You Go from Here

Chapter 4: Other Cluster Configuration Tasks

Identifying Service Adapter Failure for Two-Node Clusters: netmon.cf

Creating the netmon.cf File

Choosing IP Addresses for the netmon.cf File

Resetting Cluster Tunables

Resetting HACMP Tunable Values using the Command Line

Listing Tunable Values

Understanding How HACMP Resets Cluster Tunables

Where You Go from Here

Chapter 5: Monitoring and Troubleshooting a Cluster

Problem Determination Tools

Viewing Cluster Information (clstat) in WebSMIT

Useful Commands

Logging Messages

Collecting Cluster Log Files for Problem Reporting

Solving Common Problems with Networks and Applications

Identifying Causes of Unexpected Network and Network Interface Failures

Troubleshooting an Unsuccessful Application Fallover to Another Node

Troubleshooting the Serial Connection

Appendix A: Command Reference and the clinfo Utility

Glossary

Notices for HACMP for Linux: Installation and Administration Guide

Index