Sybase 15 manual Using multiple network license servers, Setting up multiple network servers

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Sybase Software Asset Management

2Replication Server version 15.0 uses a newer version of the SySAM licensing technology and an updated license format. On any one machine, you can have only one instance of a license server running. You must make some adjustments to use earlier versions with Replication Server 15.0. See “Co-existing with earlier versions of SySAM” on page 8.

Using multiple network license servers

As part of a failover plan or a load-balancing system, you can have multiple SySAM network license servers running a subset of the total licenses. The SySAM network license servers can be connected by a local area network (LAN) or by a wide area network (WAN).

This configuration is an excellent load-balancing mechanism for physically distant locations. You can specify the local servers ahead of the remote servers in the license location list.

To specify multiple license servers, set up the SYBASE_LICENSE_FILE or LM_LICENSE_FILE environment variable to contain a list of license files, where each license file refers to one of the network license servers. Replication Server uses this list to checkout licenses, starting with the first server on the list. If check-out fails for any reason, Replication Server attempts to check out licenses using the second server in the list, and so on.

Although this configuration provides a basic level of failover protection, if one or more license servers in the list are down, the licenses served by these servers are no longer available, so the total number of available licenses is reduced until the servers restart.

Note See “Redundant License Server Systems” in Chapter 4, “Selecting

License Server Machines,” of the FLEXnet Licensing End User Guide.

Setting up multiple network servers

To use multiple network license servers, install a network license server on two or more servers using the instructions in “Installing a new license server” on page 22.

To configure Replication Server to use multiple network servers, specify the network server addresses in the SYBASE_LICENSE_FILE environment variable as port@host separated by a semicolon. For example:

6	Replication Server

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Contents Replication Server Document ID DC32237-01-1500-03 Contents Contents About This Book Replication Server About This Book Finding the latest information on component certificationsViii Replication definitions, and subscriptions, are in italics One item in square brackets choose it or omit it Your area Xii Introduction Replication Server componentsInstallation task overview Sybase Software Asset ManagementSybase Software Asset Management Using an unserved license How SySAM worksBefore You Begin Using a network license server Setting up an unserved configurationSetting up a network license server LimitationsUsing multiple network license servers Setting up multiple network serversUsing three-server redundancy Setting up three-server redundancyUsing alternative license file locations Co-existing with earlier versions of SySAMUsing a central license server only for new licenses License usage and enforcement Managing licenses from multiple vendorsLicense availability and grace periods If a SySAM license cannot be acquired Acquiring SySAM licenses during the grace periodPre-installation tasks Read the release bulletinReview system requirements Pre-installation tasksPlan your replication system Review operating system patch requirementsIncrease operating system threads Understand the installation directory structure Configure the operating system for asynchronous I/OBefore You Begin Review the Sybase installation directory contents Set the required environment variable for dsedit utility Perform administrative tasks Creating the sybase user accountSySAM pre-installation tasks Choosing the appropriate license server configurationInstalling a new license server IBM AIXLaunch the Sybase installer program by entering $SYBASE/$SYBASESYSAM/bin b Enter A P T E R 2 Installing Replication Server Using InstallShield for installationUsing InstallShield for installation Installing Replication Server Installing Replication ServerLog out as root Log in as sybase HP-UX Installing Replication Server SySAM License Server window opens and displays this prompt Click Finish. The InstallShield wizard closes Installing in command line mode Installing with a response file Installing in console mode with a response file Installing in silent modeTroubleshooting installation Checking for a valid installationUninstalling Sybase products Uninstalling Sybase products A P T E R 3 Post-Installation Tasks Review the log filesStart Adaptive Server for the Rssd Start the sample Replication ServerStart Adaptive Server for the Rssd Post-Installation Tasks Set environment variablesSet environment variables Describes the environment variablesP E N D I X a SySAM Administration Managing licensesManaging licenses Using the options file to manage licenses Appendix a SySAM AdministrationStarting and stopping network license servers Starting and stopping network license serversHP-UX Borrowing a license to work offline Borrowing a license to work offlineConnect to the network Shut down Replication Server Using SAMreport Enabling the network license server Reportlog fileEnabling the network license server Reportlog file SAMreport system requirements Installing the Java Runtime Environment Installing SAMreportUsing SAMreport Samreport-36-hp700u11.bin -isjavahome JRE directory Post-installation tasks for SAMreport Starting and Stopping SAMreportUsing SySAM utilities Managing and collecting logsUsing SySAM utilities Index Index $SCROOT $SYBROOT $SYBASESYSAM $SYBASEUALog.txt file SYBASE.csh file Vpd.properties file Index