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Managing MC/ServiceGuard NFS for Linux

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HP Part Number: T1442-90002

November 2001

Table of Contents

1 MC/ServiceGuard NFS for LINUX Introduction

Overview of MC/ServiceGuard NFS

Limitations of MC/ServiceGuard NFS

Supported Configurations

Failover to an Idle Node
Failover between Active Nodes
Failover with an Adoptive Node for Multiple Packages
Cascading Failover with Multiple Adoptive Nodes

Understanding the MC/ServiceGuard NFS Files

How the Control and Monitor Scripts Work

Starting the NFS Services
Halting the NFS Services
Monitoring the NFS Services
Remote mount table synchronization
On the Client Side

2 Installing and Configuring MC/ServiceGuard NFS for Linux

Installing MC/ServiceGuard NFS for Linux

Copying the Template Files

Before Creating an MC/ServiceGuard NFS Package

Configuring a MC/ServiceGuard NFS Package

Editing the Package Configuration File (pkg.conf)
Editing the Package Control Scripts (pkg.cntl)
Editing the NFS Control Script (hanfs.sh)
Creating the MC/ServiceGuard Binary Configuration File
Housekeeping Suggestions

3 Sample Configurations

Configuring Mulitple Nodes to Support Failover of Multiple Packages

Cluster Configuration File for Three-Server Mutual Takeover
Package Configuration File for pkg01
Package Control Script for pkg01
NFS Control Script for pkg01
Package Configuration File for pkg02
Package Control Script for pkg02
NFS Control Script for pkg02
Package Configuration File for pkg03
Package Control Script for pkg03
NFS Control Script for pkg03

Configuring One Adoptive Node to Support Failover of Multiple Packages

Cluster Configuration File for Adoptive Node for Two Packages
Package Configuration File for pkg01
Package Control Script for pkg01
NFS Control Script for pkg01
Package Configuration File for pkg02
Package Control Script for pkg02
NFS Control Script for pkg02

Configuring Multiple Adoptive Nodes for Cascading Failover

Cluster Configuration File for Three-Server Cascading Failover
Package Configuration File for pkg01
Package Control Script for pkg01
NFS Control Script for pkg01
Package Configuration File for pkg02
Package Control Script for pkg02
NFS Control Script for pkg02

List of Figures

1-1 Simple Failover to an Idle NFS Server
1-2 Failover from One Active NFS Server to Another
1-3 A Host Configured as Adoptive Node for Multiple Packages
1-4 Cascading Failover, with Three Adoptive Nodes
3-1 Three-Server Mutual Takeover
3-2 Three-Server Mutual Takeover After One Server Fails
3-3 One Adoptive Node for Two Packages
3-4 One Adoptive Node for Two Packages After One Server Fails
3-5 Cascading Failover with Three Servers
3-6 Cascading Failover with Three Servers After One Server Fails

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