HP Tru64 UNIX Version 5.1B-2 and Higher Patch Kit Installation Instructions (March 2009)

rolling upgrade A software upgrade of a cluster that is performed while the cluster is in operation. One member

at a time is rolled and returned to operation while the cluster transparently maintains a

mixed-version environment for the base operating system, cluster, and Worldwide Language

Support (WLS) software. Clients accessing services are not aware that a rolling upgrade is in

progress.

On Version 5.0A and higher systems, you use a rolling upgrade to patch a cluster or to update

the Tru64 UNIX operating system or TruCluster software on a cluster. The procedure is the

same for both types of upgrades — the only difference is the command you run during the

install stage of the rolling upgrade procedure.

See also no-roll patching.

setld An interactive program for installing and managing software subsets. Software products are

organized into subsets that can be loaded, deleted, inventoried, and configured. The load

operation reads software from disk, tape, CD-ROM, or an Internet installation server. The patch

installation tool, dupatch, is based on the setld program.

tar file

A file created with the tar command that saves and restores multiple files in a single file. Tru64

UNIXpatch kits are provided as tar files (except for kits included on a Patch CD–ROM).

version switch During a rolling upgrade, a version switch manages the transition of the active version to the

new version of an operating system. The active version is the one that is currently in use. The

purpose of a version switch in a cluster is to prevent the introduction of potentially incompatible

new features until all members have been updated.