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VeritasClusterServer
InstallationGuide
LinuxforIBMPower
5.0ReleaseUpdate3
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VeritasClusterServerInstallationGuide The software described in this book is furnished under a license agreement and may be used only in accordance with the terms of the agreement. Product version: 5.0 RU3 Document version: 5.0RU3.0 LegalNotice Copyright © 2009 Symantec Corporation. All rights reserved. Symantec, the Symantec Logo, Veritas and Veritas Storage Foundation are trademarks or registered trademarks of Symantec Corporation or its affiliates in the U.S. and other countries. Other names
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Symantec Corporation 350 Ellis Street Mountain View, CA 94043 http://www.symantec.com
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TechnicalSupport Symantec Technical Support maintains support centers globally. Technical Support’s primary role is to respond to specific queries about product features and functionality. The Technical Support group also creates content for our online Knowledge Base. The Technical Support group works collaboratively with the other functional areas within Symantec to answer your questions in a timely fashion. For example, the Technical Support group works with Product Engineering and Symantec Se
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■ Version and patch level ■ Network topology ■ Router, gateway, and IP address information ■ Problem description: ■ Error messages and log files ■ Troubleshooting that was performed before contacting Symantec ■ Recent software configuration changes and network changes Licensingandregistration If your Symantec product requires registration or a license key, access our technical support Web page at the following URL: www.symantec.com/techsupp/ Customerservice Customer service information is availa
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Maintenanceagreementresources If you want to contact Symantec regarding an existing maintenance agreement, please contact the maintenance agreement administration team for your region as follows: Asia-Pacific and Japan customercare_apac@symantec.com Europe, Middle-East, and Africa semea@symantec.com North America and Latin America supportsolutions@symantec.com Additionalenterpriseservices Symantec offers a comprehensive set of services that allow you to maximize your investment in Symantec produ
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Contents TechnicalSupport ............................................................................................... 4 Chapter1 Introducing Veritas Cluster Server .................................. 13 About Veritas Cluster Server .......................................................... 13 About VCS basics ......................................................................... 13 About multiple nodes .............................................................. 14 About shared storage .
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8 Contents Creating authentication broker accounts on root broker system ........................................................................... 34 Creating encrypted files for the security infrastructure ................. 35 Preparing the installation system for the security infrastructure ................................................................. 37 Performing preinstallation tasks ..................................................... 38 Obtaining VCS license keys ..................
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Contents 9 Adding VCS users ................................................................... 71 Configuring SMTP email notification ......................................... 71 Configuring SNMP trap notification .......................................... 73 Configuring global clusters ...................................................... 74 Installing VCS RPMs ............................................................... 75 Creating VCS configuration files .................................
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10 Contents Verifying LLT, GAB, and cluster operation ...................................... 113 Verifying LLT ...................................................................... 114 Verifying GAB ...................................................................... 116 Verifying the cluster ............................................................. 117 Verifying the cluster nodes .................................................... 118 Chapter7 Addingandremovingclusternodes .............
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Contents 11 Bringing up the existing node ................................................. 145 Installing the VCS software manually when adding a node to a single node cluster .......................................................... 146 Configuring LLT ................................................................... 146 Configuring GAB when adding a node to a single node cluster .......................................................................... 149 Starting LLT and GAB ............
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12 Contents
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1 Chapter IntroducingVeritasCluster Server This chapter includes the following topics: ■ About Veritas Cluster Server ■ About VCS basics ■ About VCS features ■ About VCS optional components AboutVeritasClusterServer Veritas™ Cluster Server by Symantec is a high-availability solution for cluster configurations. Veritas Cluster Server (VCS) monitors systems and application services, and restarts services when hardware or software fails. AboutVCSbasics A single VCS cluster consists of multiple syst
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14 IntroducingVeritasClusterServer AboutVCSbasics Figure 1-1 illustrates a typical VCS configuration of four nodes that are connected to shared storage. Exampleofafour-nodeVCScluster Figure1-1 Clientworkstation Clientworkstation Publicnetwork VCSprivate network VCSnodes Sharedstorage Client workstations receive service over the public network from applications running on VCS nodes. VCS monitors the nodes and their services. VCS nodes in the cluster communicate over a private network. Aboutmultip
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IntroducingVeritasClusterServer 15 AboutVCSbasics Twoexamplesofsharedstorageconfigurations Figure1-2 Fullysharedstorage Distributedsharedstorage AboutLLTandGAB VCS uses two components, LLT and GAB, to share data over private networks among systems. These components provide the performance and reliability that VCS requires. LLT (Low Latency Transport) provides fast, kernel-to-kernel communications, and monitors network connections. LLT configuration files are as follows: ■ /etc/llthosts—lists all
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16 IntroducingVeritasClusterServer AboutVCSbasics Figure 1-3 illustrates a two-node VCS cluster where the nodes galaxy and nebula have two private network connections. TwoEthernetconnectionsconnectingtwonodes Figure1-3 VCSprivatenetwork:two ethernetconnections galaxy nebula Shareddisks Publicnetwork Aboutpreexistingnetworkpartitions A preexisting network partition refers to a failure in the communication channels that occurs while the systems are down and VCS cannot respond. When the systems sta
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IntroducingVeritasClusterServer 17 AboutVCSfeatures AboutVCSfeatures You can use the Veritas Installation Assessment Service to assess your setup for VCS installation. See“Veritas Installation Assessment Service” on page 17. VCS offers the following features that you can configure during VCS configuration: VCS notifications See“About VCS notifications” on page 17. VCS global clusters See“About global clusters” on page 17. I/O fencing See“About I/O fencing” on page 18. VeritasInstallationAssessme
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18 IntroducingVeritasClusterServer AboutVCSoptionalcomponents AboutI/Ofencing I/O fencing protects the data on shared disks when nodes in a cluster detect a change in the cluster membership that indicates a split brain condition. See theVeritasClusterServerUser'sGuide. The fencing operation determines the following: ■ The nodes that must retain access to the shared storage ■ The nodes that must be ejected from the cluster This decision prevents possible data corruption. The installvcs program in
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IntroducingVeritasClusterServer 19 AboutVCSoptionalcomponents TypicalVCSsetupwithoptionalcomponents Figure1-4 SymantecProduct AuthenticationService rootbroker Optional VCSManagementConsole managementserver VCScluster1 VCScluster2 AboutSymantecProductAuthenticationService(AT) VCS uses Symantec Product Authentication Service (AT) to provide secure communication between cluster nodes and clients. It uses digital certificates for authentication and SSL to encrypt communication over the public networ
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20 IntroducingVeritasClusterServer AboutVCSoptionalcomponents See“Preparing to configure the clusters in secure mode” on page 29. AboutClusterManager(JavaConsole) Cluster Manager (Java Console) offers complete administration capabilities for your cluster. Use the different views in the Java Console to monitor clusters and VCS objects, including service groups, systems, resources, and resource types. You can perform many administrative operations using the Java Console. You can also perform these
