IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive ...

Enabling Tivoli Storage Manager Web client access in aCluster EnvironmentIf the Tivoli Storage Manager Web client access is needed during a failovercondition, you must configure the Tivoli Storage Manager Web client acceptordaemon (CAD) associated with the cluster to failover along with the clusterresource.After you have completed the configuration steps described in the Configuring thebackup-archive client in a cluster environment section, perform the additional stepsdescribed below to complete the Web client access setup:1. Set up the CAD to manage the Web client and scheduler. Tivoli StorageManager CAD should be set up to manage schedulers as well as Web clientaccess. This reduces the number of daemons that need to be configured ascluster applications and thus simplifies the configuration and administration.When a failover occurs, the Tivoli Storage Manager CAD starts on the nodethat is managing the takeover.2. Update the managedservices option in the system options file dsm.sys on eachnode for each server stanza, as shown below for NodeAServername clinton_NodeAnodenameNodeAcommmethod tcpiptcpp 1500tcpsclinton.sanjose.ibm.comtcpclientaddres nodeA.sanjose.ibm.compasswordaccess generatepassworddir /A1/tsm/pwdschedlogn /A1/tsm/dsmsched.logerrorlogname /A1/tsm/errorlog.logmanagedservices webclient schedule3. Set up the CAD to use a known http port. By default, the CAD uses http port1581, when available, for the Web client access. If this port is not available, theCAD finds the first available port, starting with 1581. In a failover condition ofan active-active cluster configuration, a failover cluster host system will likelybe running multiple instances of the CAD. If default settings are used for thehttp port, the failover node will use any available port for the CAD being failedover, since the default port will likely be in use by the failover host’s currentCAD processes. This causes problems for the Web client associated with theCAD that failed over, as the new http port will not be known to the Web clientusers. You might use the httpport option to specify the specific ports for theWeb client access for each resource. This allows you to always use the sameport when connecting from a web browser, independent of the node servingthe cluster resource. Add the httpport option in the system options file(dsm.sys) on each node for each server stanza as follows, making sure that eachstanza uses a unique value:76 IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive Clients Version 6.1: Installation and User’s Guide