Manuals / Symantec / Computer Equipment / Computer Accessories

Symantec 5 About VCS features, Veritas Installation Assessment Service, About VCS notifications

Models: 5

1 176

Download 176 pages 9.76 Kb

Page 17

Introducing Veritas Cluster Server	17
About VCS features

About VCS features

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.

Veritas Installation Assessment Service

The Veritas Installation Assessment Service (VIAS) utility assists you in getting ready for a Veritas Storage Foundation and High Availability Solutions installation or upgrade. The VIAS utility allows the preinstallation evaluation of a configuration, to validate it prior to starting an installation or upgrade.

https://vias.symantec.com/

About VCS notifications

You can configure both SNMP and SMTP notifications for VCS. Symantec recommends you to configure one of these notifications. You have the following options:

■Configure SNMP trap notification of VCS events using the VCS Notifier component

■Configure SMTP email notification of VCS events using the VCS Notifier component.

See the Veritas Cluster Server User’s Guide.

About global clusters

Global clusters provide the ability to fail over applications between geographically distributed clusters when disaster occurs. You require a separate license to configure global clusters. You must add this license during the installation. The installer only asks about configuring global clusters if you have used the global cluster license.

See the Veritas Cluster Server User's Guide.

Image 17

Symantec 5 About VCS features, Veritas Installation Assessment Service, About VCS notifications, About global clusters

Contents

Veritas Cluster Server Installation Guide Legal Notice Veritas Cluster Server Installation GuideSymantec Corporation Ellis Street Mountain View, CA Contacting Technical Support Technical SupportDocumentation feedback Customer serviceLicensing and registration Additional enterprise services Maintenance agreement resourcesContents Contents Chapter Configuring VCS clusters for data integrity 121 Chapter Adding and removing cluster nodesIndex 173 171Contents This chapter includes the following topics About Veritas Cluster ServerAbout VCS basics Example of a four-node VCS cluster About multiple nodesAbout shared storage About network channels for heartbeating See About the LLT and GAB configuration files onAbout LLT and GAB About VCS seeding About preexisting network partitionsVeritas Installation Assessment Service About VCS featuresAbout VCS notifications About global clustersYou can add the following optional components to VCS About VCS optional componentsAbout I/O fencing 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 1lists the hardware requirements for a VCS cluster About planning to install VCSHardware requirements Description Required disk spaceHardware requirements for a VCS cluster 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 This task Preparatory tasks to configure a cluster in secure modeTasks # ./installer Installing the root broker for the security infrastructureSee About Symantec Product Authentication Service AT on 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 Https//licensing.symantec.com Obtaining VCS license keysTask Reference 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 -a# cd /etc/sysconfig/network Setting up inter-system communication# ifconfig eth0 # ssh-keygen -t dsa Setting up ssh on cluster systemsAccept the default location of ~/.ssh/iddsa See About setting up disk-based I/O fencing on Setting up shared storage# chmod 755 ~/.ssh # exec /usr/bin/ssh-agent $SHELL # ssh-addFor the C Shell csh or tcsh, type Setting the Path variableSetting the Manpath variable Case of a panic, the node will reboot after 10 seconds Setting the kernel.panic tunableOptimizing LLT media speed settings on private NICs # mount -o ro /dev/cdrom /mnt/cdrom Performing automated pre-installation checkMounting the product disc # ./installvcs -precheck galaxy nebula VCS About installing and configuring VCSExample vcscluster27 To configure Veritas Cluster Server you needExample galaxy, nebula Var/tmp/privatedir/roothash To configure VCS clusters in secure mode optional, you needTo configure Smtp email notification optional, you need Optional VCS RPMs To configure Snmp trap notification optional, you needTo configure global clusters optional, you need 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 filesSet the Persistentname for all the NICs Completing the installationStarting VCS 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 allExample specifies the CDS format Identifying disks to use as coordinator disksChecking shared disks for I/O fencing See Testing the disks using vxfentsthdw utility on Verifying that the nodes have access to the same diskTesting the shared disks for SCSI-3 # /opt/VRTSvcs/vxfen/bin/vxfentsthdw Testing the disks using vxfentsthdw utilitySee Removing permissions for communication on Dev/sdr If you use rsh for communication# /opt/VRTSvcs/vxfen/bin/vxfentsthdw -n Setting up coordinator disk groups Setting up disk-based I/O fencing manually# vxdg init vxfencoorddg sdx sdy sdz # vxdg -g vxfencoorddg set coordinator=onDeport the coordinator disk group Creating I/O fencing configuration filesFor raw device configuration Stop VCS on all nodes Modifying VCS configuration to use I/O fencingMake a backup copy of the main.cf file # 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 = Application wac IP gcoip NIC csgnic Gcoip requires csgnicWac requires gcoip 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 installationSLES10/ppc64, required Rpms Adding a license keyChecking licensing information on the system 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 GABIf the file on one of the existing nodes resembles On the new system, run the command# /sbin/lltconfig -c Add the new system to the cluster To verify GAB On the new node, run the commandAdding the node to the existing 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 # hastatus -summary Deleting the departing node from VCS configurationCheck the status of the systems and the service groups # haconf -makerw # hagrp -unlink grp4 grp1 # hagrp -switch grp3 -to nebula# hagrp -dep 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 onDirective Description Additional considerations for LLTLLT directives 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 See About adding and removing nodes on About the uninstallvcs programPreparing to uninstall VCS Removing VCS 5.0 RU3 RPMs Uninstalling VCS 5.0 RU3# cd /opt/VRTS/install # ./uninstallvcs 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 file# setparms ipaddress Configuring the netmask for LLTSelecting UDP ports 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