Verifying the cluster nodes | Symantec 5 specs

118Verifying the VCS installation

Verifying LLT, GAB, and cluster operation

To verify the cluster

1To verify the status of the cluster, type the following command:

hastatus -summary

The output resembles:

--	SYSTEM STATE
--	System	State		Frozen
A	galaxy	RUNNING		0
A	nebula	RUNNING		0
--	GROUP STATE
--	Group	System	Probed	AutoDisabled	State
B	ClusterService	galaxy	Y	N	ONLINE
B	ClusterService	nebula	Y	N	OFFLINE

2Review the command output for the following information:

■The system state

If the value of the system state is RUNNING, the cluster is successfully started.

■The ClusterService group state

In the sample output, the group state lists the ClusterService group, which is ONLINE on galaxy and OFFLINE on nebula.

Verifying the cluster nodes

Verify the information of the cluster systems using the hasys -displaycommand.

The information for each node in the output should be similar.

Refer to the hasys(1M) manual page.

Refer to the Veritas Cluster Server User's Guide for information about the system attributes for VCS.

To verify the cluster nodes

◆ On one of the nodes, type the hasys -displaycommand:

hasys -display

Image 118

Symantec 5 manual Verifying the cluster nodes

Contents

Veritas Cluster Server Installation Guide Veritas Cluster Server Installation Guide Legal Notice Symantec Corporation Ellis Street Mountain View, CA Technical Support Contacting Technical Support Licensing and registration Customer serviceDocumentation feedback Maintenance agreement resources Additional enterprise services Contents Contents Chapter Configuring VCS clusters for data integrity Chapter Adding and removing cluster nodes 121 171 Index 173 Contents About VCS basics About Veritas Cluster ServerThis chapter includes the following topics About shared storage About multiple nodesExample of a four-node VCS cluster About LLT and GAB See About the LLT and GAB configuration files onAbout network channels for heartbeating About preexisting network partitions About VCS seeding About VCS notifications About VCS featuresVeritas Installation Assessment Service About global clusters About I/O fencing About VCS optional componentsYou can add the following optional components to VCS About Symantec Product Authentication Service AT About Cluster Manager Java Console See Preparing to configure the clusters in secure mode onSee Installing the Java Console on About Veritas Cluster Server Management Console About VCS optional components Page Hardware requirements About planning to install VCS1lists the hardware requirements for a VCS cluster Hardware requirements for a VCS cluster Required disk spaceDescription Supported operating systems Kernel Architecture Required Linux RPMs for VCS Rhel Supported software Planning to install VCS Supported software About preparing to install VCS Preparing to configure the clusters in secure mode 1depicts the flow of configuring VCS cluster in secure mode Workflow to configure VCS cluster in secure mode Tasks Preparatory tasks to configure a cluster in secure modeThis task See About Symantec Product Authentication Service AT on Installing the root broker for the security infrastructure# ./installer Venus # vssat showalltrustedcreds Venus # vssat showprpl --pdrtype root \ Creating encrypted files for the security infrastructure Venus # vssat showbrokerhash Addprpl command For example RootBroker # vssat createpkg \ Performing preinstallation tasks Task Reference Obtaining VCS license keysHttps//licensing.symantec.com Setting up the private network You can use network switches instead of hubsPage Configuring SuSE network interfaces See About installing and configuring VCS on # cd /etc/sysconfig Run the commandWhere ethX is the interface name For example # ifconfig -a # ifconfig eth0 Setting up inter-system communication# cd /etc/sysconfig/network Accept the default location of ~/.ssh/iddsa Setting up ssh on cluster systems# ssh-keygen -t dsa # chmod 755 ~/.ssh Setting up shared storageSee About setting up disk-based I/O fencing on # exec /usr/bin/ssh-agent $SHELL # ssh-add Setting the Manpath variable Setting the Path variableFor the C Shell csh or tcsh, type Optimizing LLT media speed settings on private NICs Setting the kernel.panic tunableCase of a panic, the node will reboot after 10 seconds Mounting the product disc Performing automated pre-installation check# mount -o ro /dev/cdrom /mnt/cdrom # ./installvcs -precheck galaxy nebula About installing and configuring VCS VCS Example galaxy, nebula To configure Veritas Cluster Server you needExample vcscluster27 To configure Smtp email notification optional, you need To configure VCS clusters in secure mode optional, you needVar/tmp/privatedir/roothash To configure global clusters optional, you need To configure Snmp trap notification optional, you needOptional VCS RPMs VRTSvcsmn Manual pages for VCS commands About the VCS installation programOptional features of the installvcs program See About preparing to install VCS on Installvcs command usage takes the following form Interacting with the installvcs programAbout installvcs program command options Optional action Reference Installvcs system1 system2... options Option and Syntax Description Nooptionalpkgs Installing VCS using installonly option Configuring VCS using configure option 3lists the installation and the configuration tasks Installing and configuring VCS 5.0 RU3See Configuring the basic cluster on Overview of tasks Starting the software installation # ./installvcs -rsh Specifying systems for installationStart the installvcs program # cd /clusterserver Licensing VCS See Checking licensing information on the system on Choosing VCS RPMs for installation Enter keys for additional product features Choosing to install VCS RPMs or configure VCS Starting the software configuration See Configuring VCS using configure option on # ./installvcs -configure Specifying systems for configurationConfiguring the basic cluster # cd /dvdrom/clusterserverPage Configuring the cluster in secure mode Root@east.symantecexample.com East.symantecexample.comSymantecexample.com Root/roothash Adding VCS users Configuring Smtp email notificationEnter the user’s name, password, and level of privileges To add a user, enter y at the prompt See Configuring Snmp trap notification on If you do not want to add, answer n Configuring Snmp trap notificationSee Configuring global clusters on Verify and confirm the Smtp notification information Configuring global clusters Verify and confirm the Snmp notification information Installing VCS RPMs See Creating VCS configuration files on Creating VCS configuration files Verifying the NIC configuration Starting VCS Completing the installationSet the Persistentname for all the NICs File description VCS node authentication broker Hardware requirements for the Java Console Installing the Java ConsoleSoftware requirements for the Java Console See Software requirements for the Java Console on Navigate to the folder that contains the RPMs Installing the Java Console on Linux for IBM PowerInstalling the Java Console on a Windows system # cd /mnt/cdrom/distarch/clusterserver/rpms Installing VCS Simulator on Windows systems Installing VCS SimulatorInstalling VCS Simulator on Unix systems Software requirements for VCS Simulator Reviewing the installation Verifying and updating licenses on the system Verifying the cluster after installationSee About verifying the VCS installation on Checking licensing information on the system # cd /opt/VRTS/bin Updating product licenses using vxlicinstReplacing a VCS demo license with a permanent license # hastop -all -force Start VCS on each node Accessing the VCS documentationTo access the VCS documentation # hastart Configuring VCS clusters for data integrity About configuring VCS clusters for data integrity About coordination points About I/O fencing componentsAbout data disks See About data disks on About setting up disk-based I/O fencing 1illustrates the tasks involved to configure I/O fencing Workflow to configure disk-based I/O fencing I/O fencing configuration files include Preparing to configure disk-based I/O fencing Initializing disks as VxVM disks # fdisk -l # vxddladm listsupport all Libnamevidpid Checking shared disks for I/O fencing Identifying disks to use as coordinator disksExample specifies the CDS format Testing the shared disks for SCSI-3 Verifying that the nodes have access to the same diskSee Testing the disks using vxfentsthdw utility on See Removing permissions for communication on Testing the disks using vxfentsthdw utility# /opt/VRTSvcs/vxfen/bin/vxfentsthdw # /opt/VRTSvcs/vxfen/bin/vxfentsthdw -n If you use rsh for communicationDev/sdr # vxdg init vxfencoorddg sdx sdy sdz Setting up disk-based I/O fencing manuallySetting up coordinator disk groups # vxdg -g vxfencoorddg set coordinator=on For raw device configuration Creating I/O fencing configuration filesDeport the coordinator disk group Make a backup copy of the main.cf file Modifying VCS configuration to use I/O fencingStop VCS on all nodes Start VCS Verifying I/O fencing configuration# hacf -verify /etc/VRTSvcs/conf/config # /etc/init.d/vxfen start Removing permissions for communication # vxfenadm -dPage About verifying the VCS installation About the LLT and GAB configuration files Galaxy Nebula About the VCS configuration file main.cf Sample main.cf file for VCS clusters Page Sample main.cf file for global clusters ClusterAddress = Wac requires gcoip Gcoip requires csgnicApplication wac IP gcoip NIC csgnic See Setting the Path variable on Verifying the LLT, GAB, and VCS configuration filesVerify the content of the configuration files Verifying LLT, GAB, and cluster operation Output on galaxy resembles Verifying LLTSee Verifying the cluster on Output on nebula resembles Eth1 UP Verifying GAB Output resembles Verifying the cluster Verifying the cluster nodes Current Eth1 UP eth2 UP About adding and removing nodes Adding a node to a cluster Setting up the hardware See Adding a license key on Preparing for a manual installation when adding a node Installing VCS RPMs for a manual installation See Mounting the product disc on Checking licensing information on the system Adding a license keySLES10/ppc64, required Rpms See Configuring the authentication broker on node saturn on Setting up the node to run in secure modeSee Configuring LLT and GAB on See Setting up VCS related security configuration on Configuring the authentication broker on node saturn Configuring LLT and GAB Setting up VCS related security configuration # /sbin/lltconfig -c On the new system, run the commandIf the file on one of the existing nodes resembles Adding the node to the existing cluster To verify GAB On the new node, run the commandAdd the new system to the cluster Stop VCS on the new node Removing a node from a clusterStarting VCS and verifying the cluster Start VCS on the new node Verifying the status of nodes and service groups Check the status of the systems and the service groups Deleting the departing node from VCS configuration# hastatus -summary # hagrp -dep # hagrp -switch grp3 -to nebula# haconf -makerw # hagrp -unlink grp4 grp1 Delete the node from the cluster Save the configuration, making it read onlyCheck the status # hagrp -delete grp4 Modifying configuration files on each remaining node Removing security credentials from the leaving node # /etc/init.d/gab stop # /etc/init.d/llt stop Stop GAB and LLTTo determine the RPMs to remove, enter # rpm -qa grep Vrts Remove the LLT and GAB configuration files # rm /etc/llttab # rm /etc/gabtab # rm /etc/llthosts About installing VCS on a single node Creating a single-node cluster using the installer program Tasks to create a single-node cluster using the installer Preparing for a single node installationStarting the installer for the single node cluster See Starting the software installation on See Licensing VCS on Installing the VCS software manually on a single nodeCreating a single-node cluster manually Set the path variable Verifying single-node operation Renaming the LLT and GAB startup filesModifying the startup files # hastart -onenode Adding a node to a single-node cluster Setting up a node to join the single-node cluster Installing VxVM or VxFS if necessary Display the service groups currently configured Configuring the shared storageSee Setting up shared storage on Bringing up the existing node Stop VCS on Node a Configuring LLTFreeze the service groups Rename the GAB and LLT startup files so they can be used LLT directives Setting up /etc/llthostsSetting up /etc/llttab See LLT directives on LLT directives Additional considerations for LLTDirective Description Reconfigure VCS on the existing nodes Configuring GAB when adding a node to a single node clusterReconfiguring VCS on the existing node Starting LLT and GAB Verifying configuration on both nodes Start the VCS on Node B Unfreeze the service groupsImplement the new two-node configuration Verify that VCS is up on both nodesPage Preparing to uninstall VCS About the uninstallvcs programSee About adding and removing nodes on # cd /opt/VRTS/install # ./uninstallvcs Uninstalling VCS 5.0 RU3Removing VCS 5.0 RU3 RPMs Running uninstallvcs from the VCS 5.0 RU3 disc Uninstallvcs program is not available in /opt/VRTS/install Configuring LLT over UDP Using the UDP layer for LLTWhen to use LLT over UDP Following checklist is to configure LLT over UDP Broadcast address in the /etc/llttab file Link command in the /etc/llttab fileSee Sample configuration links crossing IP routers on See Broadcast address in the /etc/llttab file on Set-addr command in the /etc/llttab file Table A-2describes the fields of the set-addr command Selecting UDP ports Configuring the netmask for LLT# setparms ipaddress For second network interface Configuring the broadcast address for LLTSample configuration direct-attached links # cat /etc/llttab UDP File for Node 1 resembles Sample configuration links crossing IP routers Figure A-2 Performing automated VCS installations /etc/llttab file on Node 0 resembles Or, in the case of an integer value Syntax in the response fileExample response file Or, in the case of a list Response file variable definitions Table A-3 Response file variables Variable Description $CPICFGOPTLICENSE $CPICFGOPTPKGPATH $CPICFGKEYS Table A-3 See Installing and configuring VCS 5.0 RU3 on $CPICFGOPTUNINSTALL # ./installvcs -responsefile /tmp/installvcs-uui.response Index GAB RAM VCS