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Symantec 5 manual About VCS optional components

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Introducing Veritas Cluster Server	21
About VCS optional components

configurations for Windows, Linux, and Solaris clusters. VCS Simulator also enables creating and testing global clusters.

You can administer VCS Simulator from the Java Console or from the command line.

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Symantec 5 manual About VCS optional components

Contents

Veritas Cluster Server Installation Guide Legal Notice Veritas Cluster Server Installation GuideSymantec Corporation Ellis Street Mountain View, CA Contacting Technical Support Technical SupportCustomer service Licensing and registrationDocumentation feedback Additional enterprise services Maintenance agreement resourcesContents Contents Chapter Configuring VCS clusters for data integrity 121 Chapter Adding and removing cluster nodesIndex 173 171Contents About Veritas Cluster Server About VCS basicsThis chapter includes the following topics About multiple nodes About shared storageExample of a four-node VCS cluster See About the LLT and GAB configuration files on About LLT and GABAbout network channels for heartbeating About VCS seeding About preexisting network partitionsVeritas Installation Assessment Service About VCS featuresAbout VCS notifications About global clustersAbout VCS optional components About I/O fencingYou can add the following optional components to VCS About Symantec Product Authentication Service AT See Installing the Java Console on See Preparing to configure the clusters in secure mode onAbout Cluster Manager Java Console About Veritas Cluster Server Management ConsoleAbout VCS optional components Page About planning to install VCS Hardware requirements1lists the hardware requirements for a VCS cluster Required disk space Hardware requirements for a VCS clusterDescription Kernel Architecture Supported operating systemsRhel Required Linux RPMs for VCSSupported software Planning to install VCS Supported software Preparing to configure the clusters in secure mode About preparing to install VCS1depicts the flow of configuring VCS cluster in secure mode Workflow to configure VCS cluster in secure mode Preparatory tasks to configure a cluster in secure mode TasksThis task Installing the root broker for the security infrastructure See About Symantec Product Authentication Service AT on# ./installer Venus # vssat showprpl --pdrtype root \ Venus # vssat showalltrustedcredsVenus # vssat showbrokerhash Creating encrypted files for the security infrastructureAddprpl command RootBroker # vssat createpkg \ For examplePerforming preinstallation tasks Obtaining VCS license keys Task ReferenceHttps//licensing.symantec.com You can use network switches instead of hubs Setting up the private networkPage See About installing and configuring VCS on Configuring SuSE network interfacesWhere ethX is the interface name For example Run the command# cd /etc/sysconfig # ifconfig -aSetting up inter-system communication # ifconfig eth0# cd /etc/sysconfig/network Setting up ssh on cluster systems Accept the default location of ~/.ssh/iddsa# ssh-keygen -t dsa See About setting up disk-based I/O fencing on Setting up shared storage# chmod 755 ~/.ssh # exec /usr/bin/ssh-agent $SHELL # ssh-addSetting the Path variable Setting the Manpath variableFor the C Shell csh or tcsh, type Setting the kernel.panic tunable Optimizing LLT media speed settings on private NICsCase of a panic, the node will reboot after 10 seconds Performing automated pre-installation check Mounting the product disc# mount -o ro /dev/cdrom /mnt/cdrom # ./installvcs -precheck galaxy nebula VCS About installing and configuring VCSTo configure Veritas Cluster Server you need Example galaxy, nebulaExample vcscluster27 To configure VCS clusters in secure mode optional, you need To configure Smtp email notification optional, you needVar/tmp/privatedir/roothash To configure Snmp trap notification optional, you need To configure global clusters optional, you needOptional VCS RPMs Optional features of the installvcs program About the VCS installation programVRTSvcsmn Manual pages for VCS commands See About preparing to install VCS onAbout installvcs program command options Interacting with the installvcs programInstallvcs command usage takes the following form Optional action ReferenceInstallvcs system1 system2... options Nooptionalpkgs Option and Syntax DescriptionConfiguring VCS using configure option Installing VCS using installonly optionSee Configuring the basic cluster on Installing and configuring VCS 5.0 RU33lists the installation and the configuration tasks Overview of tasksStarting the software installation Start the installvcs program Specifying systems for installation# ./installvcs -rsh # cd /clusterserverSee Checking licensing information on the system on Licensing VCSEnter keys for additional product features Choosing VCS RPMs for installationChoosing to install VCS RPMs or configure VCS See Configuring VCS using configure option on Starting the software configurationConfiguring the basic cluster Specifying systems for configuration# ./installvcs -configure # cd /dvdrom/clusterserverPage Configuring the cluster in secure mode Symantecexample.com East.symantecexample.comRoot@east.symantecexample.com Root/roothashEnter the user’s name, password, and level of privileges Configuring Smtp email notificationAdding VCS users To add a user, enter y at the promptSee Configuring Snmp trap notification on See Configuring global clusters on Configuring Snmp trap notificationIf you do not want to add, answer n Verify and confirm the Smtp notification informationVerify and confirm the Snmp notification information Configuring global clustersSee Creating VCS configuration files on Installing VCS RPMsVerifying the NIC configuration Creating VCS configuration filesCompleting the installation Starting VCSSet the Persistentname for all the NICs File description VCS node authentication broker Software requirements for the Java Console Installing the Java ConsoleHardware requirements for the Java Console See Software requirements for the Java Console onInstalling the Java Console on a Windows system Installing the Java Console on Linux for IBM PowerNavigate to the folder that contains the RPMs # cd /mnt/cdrom/distarch/clusterserver/rpmsInstalling VCS Simulator on Unix systems Installing VCS SimulatorInstalling VCS Simulator on Windows systems Software requirements for VCS SimulatorReviewing the installation See About verifying the VCS installation on Verifying the cluster after installationVerifying and updating licenses on the system Checking licensing information on the systemReplacing a VCS demo license with a permanent license Updating product licenses using vxlicinst# cd /opt/VRTS/bin # hastop -all -forceTo access the VCS documentation Accessing the VCS documentationStart VCS on each node # hastartAbout configuring VCS clusters for data integrity Configuring VCS clusters for data integrityAbout data disks About I/O fencing componentsAbout coordination points See About data disks on1illustrates the tasks involved to configure I/O fencing About setting up disk-based I/O fencingWorkflow to configure disk-based I/O fencing I/O fencing configuration files include Preparing to configure disk-based I/O fencing # fdisk -l Initializing disks as VxVM disksLibnamevidpid # vxddladm listsupport allIdentifying disks to use as coordinator disks Checking shared disks for I/O fencingExample specifies the CDS format Verifying that the nodes have access to the same disk Testing the shared disks for SCSI-3See Testing the disks using vxfentsthdw utility on Testing the disks using vxfentsthdw utility See Removing permissions for communication on# /opt/VRTSvcs/vxfen/bin/vxfentsthdw If you use rsh for communication # /opt/VRTSvcs/vxfen/bin/vxfentsthdw -nDev/sdr Setting up coordinator disk groups Setting up disk-based I/O fencing manually# vxdg init vxfencoorddg sdx sdy sdz # vxdg -g vxfencoorddg set coordinator=onCreating I/O fencing configuration files For raw device configurationDeport the coordinator disk group Modifying VCS configuration to use I/O fencing Make a backup copy of the main.cf fileStop VCS on all nodes # hacf -verify /etc/VRTSvcs/conf/config Verifying I/O fencing configurationStart VCS # /etc/init.d/vxfen start# vxfenadm -d Removing permissions for communicationPage About the LLT and GAB configuration files About verifying the VCS installationGalaxy Nebula About the VCS configuration file main.cf Sample main.cf file for VCS clusters Page Sample main.cf file for global clusters ClusterAddress = Gcoip requires csgnic Wac requires gcoipApplication wac IP gcoip NIC csgnic Verify the content of the configuration files Verifying the LLT, GAB, and VCS configuration filesSee Setting the Path variable on Verifying LLT, GAB, and cluster operationSee Verifying the cluster on Verifying LLTOutput on galaxy resembles Output on nebula resemblesEth1 UP Output resembles Verifying GABVerifying the cluster Verifying the cluster nodes Current Eth1 UP eth2 UP Adding a node to a cluster About adding and removing nodesSee Adding a license key on Setting up the hardwarePreparing for a manual installation when adding a node See Mounting the product disc on Installing VCS RPMs for a manual installationAdding a license key Checking licensing information on the systemSLES10/ppc64, required Rpms See Configuring LLT and GAB on Setting up the node to run in secure modeSee Configuring the authentication broker on node saturn on See Setting up VCS related security configuration onConfiguring the authentication broker on node saturn Setting up VCS related security configuration Configuring LLT and GABOn the new system, run the command # /sbin/lltconfig -cIf the file on one of the existing nodes resembles To verify GAB On the new node, run the command Adding the node to the existing clusterAdd the new system to the cluster Starting VCS and verifying the cluster Removing a node from a clusterStop VCS on the new node Start VCS on the new nodeVerifying the status of nodes and service groups Deleting the departing node from VCS configuration Check the status of the systems and the service groups# hastatus -summary # hagrp -switch grp3 -to nebula # hagrp -dep# haconf -makerw # hagrp -unlink grp4 grp1 Check the status Save the configuration, making it read onlyDelete the node from the cluster # hagrp -delete grp4Removing security credentials from the leaving node Modifying configuration files on each remaining nodeTo determine the RPMs to remove, enter Stop GAB and LLT# /etc/init.d/gab stop # /etc/init.d/llt stop # rpm -qa grep Vrts# rm /etc/llttab # rm /etc/gabtab # rm /etc/llthosts Remove the LLT and GAB configuration filesCreating a single-node cluster using the installer program About installing VCS on a single nodeStarting the installer for the single node cluster Preparing for a single node installationTasks to create a single-node cluster using the installer See Starting the software installation onCreating a single-node cluster manually Installing the VCS software manually on a single nodeSee Licensing VCS on Set the path variableModifying the startup files Renaming the LLT and GAB startup filesVerifying single-node operation # hastart -onenodeAdding a node to a single-node cluster Installing VxVM or VxFS if necessary Setting up a node to join the single-node clusterSee Setting up shared storage on Configuring the shared storageDisplay the service groups currently configured Bringing up the existing nodeFreeze the service groups Configuring LLTStop VCS on Node a Rename the GAB and LLT startup files so they can be usedSetting up /etc/llttab Setting up /etc/llthostsLLT directives See LLT directives onAdditional considerations for LLT LLT directivesDirective Description Reconfiguring VCS on the existing node Configuring GAB when adding a node to a single node clusterReconfigure VCS on the existing nodes Starting LLT and GABVerifying configuration on both nodes Implement the new two-node configuration Unfreeze the service groupsStart the VCS on Node B Verify that VCS is up on both nodesPage About the uninstallvcs program Preparing to uninstall VCSSee About adding and removing nodes on Uninstalling VCS 5.0 RU3 # cd /opt/VRTS/install # ./uninstallvcsRemoving VCS 5.0 RU3 RPMs Running uninstallvcs from the VCS 5.0 RU3 disc Uninstallvcs program is not available in /opt/VRTS/install When to use LLT over UDP Using the UDP layer for LLTConfiguring LLT over UDP Following checklist is to configure LLT over UDPSee Sample configuration links crossing IP routers on Link command in the /etc/llttab fileBroadcast address in the /etc/llttab file See Broadcast address in the /etc/llttab file onTable A-2describes the fields of the set-addr command Set-addr command in the /etc/llttab fileConfiguring the netmask for LLT Selecting UDP ports# setparms ipaddress Sample configuration direct-attached links Configuring the broadcast address for LLTFor second network interface # cat /etc/llttabFile for Node 1 resembles UDPFigure A-2 Sample configuration links crossing IP routers/etc/llttab file on Node 0 resembles Performing automated VCS installationsExample response file Syntax in the response fileOr, in the case of an integer value Or, in the case of a listTable A-3 Response file variables Variable Description Response file variable definitions$CPICFGOPTLICENSE $CPICFGOPTPKGPATH $CPICFGKEYS Table A-3 $CPICFGOPTUNINSTALL See Installing and configuring VCS 5.0 RU3 on# ./installvcs -responsefile /tmp/installvcs-uui.response Index GAB RAM VCS