About This Manual

This manual describes how to perform tasks related to the day-to-day management of an HP TruCluster Server system. In addition to discussing the management of quorum and votes, and the cluster file system (CFS), this manual describes how to manage the device request dispatcher and configure network services in a cluster. It also gives some suggestions for managing a cluster.

Audience

This manual is for the person who will configure and manage a TruCluster Server cluster. Instructions in this manual assume that you are an experienced UNIX administrator who can configure and maintain hardware, operating systems, and networks.

New and Changed Features

The following changes have been made to this manual (and related reference pages) since the Version 5.1A release:

Applicable information from the Version 5.1A Cluster LAN Interconnect manual has been integrated into this manual and the Cluster Technical Overview, Cluster Hardware Configuration, and Cluster Installation manuals. The Cluster LAN Interconnect manual is no longer part of the TruCluster Server documentation set.

Section 3.14 describes routing options. Starting with Version 5.1B you can use gated, routed, or static routing. You cannot use ogated. The default configuration uses gated.

Section 5.8 has a revised caution that discusses the need to adjust expected votes after deleting a member.

Section 5.10 describes how to move a cluster to another IP subnet.

Section 6.1 is new and describes updating the ifaccess.conf file when changing network interfaces.

Section 7.4 has been updated to clarify the distinction between a BIND client and a BIND server.

Section 7.6.4 describes how to migrate from Automount to AutoFS.

Section 8.5 describes how to balance application resources via the new caa_balance command.

Section 9.3.3 describes how you can use the new CFS load balancing (cfsd) feature to monitor, analyze, and adjust file systems in a cluster.

Section 9.3.4 describes how to distribute file systems via the mount -o command.

Section 9.3.5 describes how to use the new freezefs command to freeze a domain before cloning to ensure consistent file system metadata.

Chapter 10 now describes only the differences between the HP Tru64 UNIX and TruCluster Server implementations of LSM. All of the LSM documentation has been moved to Tru64 UNIX Logical Storage Manager manual so that the LSM information is easily located.

Section 11.1.3 describes using the ENVMON_SHUTDOWN_SCRIPT script to determine whether shutting down a given member will result in the loss of quorum and, if so, shutting down the remaining cluster members.

Section 11.1.9.3 describes how to forcibly unmount a served domain with the new -U option of the cfsmgr command.

Appendix D discusses how to manage a cluster that uses a LAN interconnect.

Organization

This manual is organized as follows:

Chapter 1	Presents the differences between managing a standalone Tru64 UNIX operating system software system and a TruCluster Server.
Chapter 2	Describes the graphic user interfaces (GUI) and command-line tools for managing clusters.
Chapter 3	Explains how you use cluster aliases to provide network applications with a single-system view of the cluster.
Chapter 4	Describes how to manage quorum and votes to maintain cluster availability.
Chapter 5	Describes how to configure, manage, and remove cluster members.
Chapter 6	Discusses how to configure and administer member and client networks in a cluster.
Chapter 7	Describes how to configure mail, printing, and other services in a cluster. Presents methods to provide highly available network services.
Chapter 8	Describes day-to-day tasks involved in managing highly available applications.
Chapter 9	Describes how to manage the cluster file system and the device request dispatcher, how to add and remove storage devices, and how to load-balance disk servers.
Chapter 10	Describes important differences regarding using the Logical Storage Manager (LSM) software in a cluster.
Chapter 11	Discusses how to investigate and resolve common TruCluster Server problems.
Appendix A	Lists events that are specific to TruCluster Server systems.
Appendix B	Lists the configuration variables that are provided with TruCluster Server.
Appendix C	Presents an example of a cluster-member delete log, `/cluster/admin/clu_delete_member.log`.
Appendix D	Describes LAN cluster administration.

Related Documents

Consult the following TruCluster Server documentation for assistance in cluster configuration, installation, and administration tasks:

TruCluster Server QuickSpecs — Presents the comprehensive description of the TruCluster Server Version 5.1B product.
You can find the latest version of the QuickSpecs at the following URL: http://www.tru64unix.compaq.com/docs/pub_page/spds.html.

Cluster Technical Overview — Presents concepts that are necessary for the effective management of a TruCluster Server system. Read this manual before you begin cluster installation.

Cluster Release Notes — Documents new features, known restrictions, and other important information about the TruCluster Server software products.

Cluster Hardware Configuration — Describes how to set up the processors that are to become cluster members, and how to configure cluster shared storage.

Cluster Installation — Describes how to install the TruCluster Server software on the systems that are to participate in the cluster.

Cluster Highly Available Applications — Documents how to make applications highly available. Describes the application programming interfaces (APIs) provided by the distributed lock manager (DLM), cluster alias, and Memory Channel subsystems.

You can find the latest version of the TruCluster Server documentation at: http://www.tru64unix.compaq.com/docs/pub_page/cluster_list.html.

Because the administration of a TruCluster Server system is, by design, very similar to that of a Tru64 UNIX Version 5.1B system, the following Tru64 UNIX Version 5.1B operating system manuals provide useful information:

Release Notes

System Administration

Network Administration: Connections

Network Administration: Services

Logical Storage Manager

AdvFS Administration

System Configuration and Tuning

Security Administration

Programmer's Guide

Sharing Software on a Local Area Network

Advanced Printing Software Release Notes

For help with storage management, see the following manuals:

POLYCENTER Advanced File System Utilities Reference Manual

POLYCENTER Advanced File System Utilities Release Notes

POLYCENTER Advanced File System Utilities Installation Guide

Icons on Tru64 UNIX Printed Manuals

The printed version of the Tru64 UNIX documentation uses letter icons on the spines of the manuals to help specific audiences quickly find the manuals that meet their needs. (You can order the printed documentation from HP.) The following list describes this convention:

G	Manuals for general users
S	Manuals for system and network administrators
P	Manuals for programmers
R	Manuals for reference page users

Some manuals in the documentation help meet the needs of several audiences. For example, the information in some system manuals is also used by programmers. Keep this in mind when searching for information on specific topics.

The Documentation Overview provides information on all of the manuals in the Tru64 UNIX documentation set.

Reader's Comments

HP welcomes any comments and suggestions you have on this and other Tru64 UNIX manuals.

You can send your comments in the following ways:

Fax: 603-884-0120 Attn: UBPG Publications, ZKO3-3/Y32

Internet electronic mail: readers_comment@zk3.dec.com
A Reader's Comment form is located on your system in the following location:
/usr/doc/readers_comment.txt

Please include the following information along with your comments:

The full title of the manual and the order number. (The order number appears on the title page of printed and PDF versions of a manual.)

The section numbers and page numbers of the information on which you are commenting.

The version of Tru64 UNIX that you are using.

If known, the type of processor that is running the Tru64 UNIX software.

The Tru64 UNIX Publications group cannot respond to system problems or technical support inquiries. Please address technical questions to your local system vendor or to the appropriate HP technical support office. Information provided with the software media explains how to send problem reports to HP.

Conventions

This manual uses the following typographical conventions:

#: A number sign represents the superuser prompt.
% cat: Boldface type in interactive examples indicates typed user input.
file: Italic (slanted) type indicates variable values, placeholders, and function argument names.
. . .: A vertical ellipsis indicates that a portion of an example that would normally be present is not shown.
cat(1): A cross-reference to a reference page includes the appropriate section number in parentheses. For example, cat(1) indicates that you can find information on the cat command in Section 1 of the reference pages.
[Return]: In an example, a key name enclosed in a box indicates that you press that key.