IBM Books

Planning Volume 2, Control Workstation and Software Environment

Question 9: Defining your system images

After determining the quantity and the type of nodes you need, you can decide which system image you want installed on which nodes. The system image is the collection of SP software components that is stored at a node. You can have a different system image on every node, the same system image on every node, or any combination in between. As you make this decision, there are performance and system management implications to consider.

The most significant implication is that if all the node images are the same, the installation and backup or restore functions are simpler. As discussed in the disk storage question, whether you install your applications on each node or on one node greatly affects the amount of disk storage space required for each node. While local node copies of applications offer faster performance, they require separate upgrades and system backups.

If you decided to have system partitions, you need to decide how many partitions you want and which nodes go with which partition. To fully understand partitioning, read Chapter 7, Planning SP system partitions before you make any decisions about system partitions.

You can also have one or more alternate root volume groups defined on any of the nodes. This allows you to easily switch between multiple system images on the node. The node can assume any one of several different personalities. Remember that the alternate root volume groups on a node cannot share a disk. You must have at least one disk for each root volume group.

The AIX mksysb image (SPIMG) that comes with PSSP does not have the AIX trusted computing base option enabled. If you want to have the trusted computing base option enabled, you must create and use your own customized mksysb. Customization to enable that option can only be done during your installation phase before you create the mksysb. See the information about working with the AIX image in the book PSSP: Installation and Migration Guide.

Specifying more than one system image

Worksheets 11 and 12 help you lay out each system image that you want to define for the SP nodes. The control workstation is defined in the next section. Make a copy of both worksheets for each image or alternate image that you plan to have. Use Worksheet 11 for AIX and its options, IBM licensed programs, and other programs you choose to have in your system image. Use Worksheet 12 to select the optional components of PSSP that you choose to install. The ssp image is included for informational purposes. It contains all the base components of PSSP that are not optional.

IBM provides one or more minimal system images (SPIMG) with the PSSP installation media. It might or might not contain all the parts of AIX that you want installed on each node. For example, it does not contain AIX windows support. The Read This First document that you receive with PSSP will give you the latest information on the minimal image file sets. Make certain you use the listing for the PSSP level on your system.

When you come to the question about where you want to install the rootvg, you are deciding on which internal disk drive the SPIMG should be placed. You might be planning to install external disks, but IBM suggests that the SPIMG be placed on an internal drive.

To specify system images, the ABC Corporation filled out Worksheet 11, Table 18. To specify PSSP components, they filled out Worksheet 12, Table 19.

Table 18. ABC Corporation's system images

Specifying system images - Worksheet 11
System image name SPIMG1
AIX level 4.3.3
Partition number 1
Install on node numbers 1, 3, 5, 6, 7, 8, 9, 13, 14
Specify internal disks where you want to install rootvg disk 1
Check here if you want only the SPIMG minimal image of AIX ____
IBM licensed programs
  IBM C and C++ compilers

  Parallel Environment
   ESSL (required for Parallel ESSL)
   Parallel ESSL
Additional AIX software
  bosext2.ate.obj - async terminal emulator
  bosext2.dosutil.obj - DOS utilities
Other applications


|Table 19. File set list for PSSP 3.4

PSSP 3.4 file sets - Worksheet 12
System image name spimg1

File set Description
x Image of AIX: spimg

spimg.510 Single file with mksysb image of minimal AIX 5L 5.1 system

spimg.433 Single file with mksysb image of minimal AIX 4.3.3 system
x Image: rsct.basic Base components of RSCT 1.2 with PSSP if using AIX 4.3.3 and of RSCT 2.2 with AIX 5L 5.1

rsct.basic.hacmp RSCT Basic Function (HACMP realm)

rsct.basic.rte RSCT Basic Function (all realms)

rsct.basic.sp RSCT Basic Function (SP realm)
x Image: rsct.compat.basic Basic components of RSCT 2.2 with AIX 5L 5.1

rsct.compat.basic.hacmp RSCT Event Management Basic Function (HACMP realm)

rsct.compat.basic.rte RSCT Event Management Basic Function (all realms)

rsct.compat.basic.sp RSCT Event Management Basic Function (SP realm)
x Image: rsct.compat.clients Client components of RSCT 2.2 with AIX 5L 5.1

rsct.compat.clients.hacmp RSCT Event Management Client Function (HACMP realm)

rsct.compat.clients.rte RSCT Event Management Client Function (all realms)

rsct.compat.clients.sp RSCT Event Management Client Function (SP realm)
x Image: rsct.core Core components of RSCT 2.2 with AIX 5L 5.1

rsct.core.auditrm RSCT audit log resource manager

rsct.core.errm RSCT event response resource manager

rsct.core.fsrm RSCT file system resource manager

rsct.core.gui RSCT graphical user interface

rsct.core.hostrm RSCT host resource manager

rsct.core.rmc RSCT resource monitoring and control

rsct.core.sec RSCT security

rsct.core.sensorrm RSCT sensor resource manager RSCT registry

rsct.core.utils RSCT utilities
x AIX 5L rsct.msg.locale.core.*

ssp.msg.locale.core.utils RSCT Utilities Messages where locale is one of 35 locale names

PSSP image: rsct.clients Client components of RSCT 1.2 with PSSP if using AIX 4.3.3

rsct.clients.hacmp RSCT client function (HACMP realm)

rsct.clients.rte RSCT client function (all realms)

rsct.clients.sp RSCT client function (SP realm)

PSSP image: rsct.core Core component of RSCT 1.2 with PSSP if using AIX 4.3.3

rsct.core.utils RSCT core function (all realms)
x PSSP image: ssp Base components of PSSP

ssp.authent SP Kerberos V4 Server

ssp.basic SP System Support Package

ssp.cediag SP CE Diagnostics

ssp.clients SP Client Programs

ssp.css SP Communication Subsystem Package SP man pages, PDF files, and HTML files

ssp.gui SP System Monitor Graphical User Interface

ssp.ha_topsvcs.compat Compatibility for ssp.ha and ssp.topsvcs clients SP Job Manager Package

ssp.perlpkg SP PERL distribution package

ssp.pman SP Problem Management

ssp.public Public Code compressed tarfiles

ssp.spmgr SP Extension Node SNMP Manager Switch Table API package

ssp.sysctl SP sysctl package

ssp.sysman Optional System Management programs

ssp.tecad SP HA TEC Event Adapter package SP Communication Subsystem Topology package SP System Partitioning Aid

ssp.ucode SP Supervisor microcode package

PSSP image: ssp.hacws Optional component of PSSP

ssp.hacws SP High Availability Control Workstation
x PSSP image: vsd Components for managing virtual shared disks

vsd.cmi IBM Virtual Shared Disk Centralized Management Interface (SMIT)

vsd.hsd Hashed Shared Disk data striping device driver

vsd.rvsd.hc Recoverable Virtual Shared Disk Connection Manager

vsd.rvsd.rvsdd Recoverable Virtual Shared Disk daemon

vsd.rvsd.scripts Recoverable Virtual Shared Disk recovery scripts

vsd.sysctl IBM Virtual Shared Disk sysctl commands

vsd.vsdd IBM Virtual Shared Disk device driver
x PSSP image: ssp.vsdgui IBM Virtual Shared Disk Perspectives GUI
x PSSP image: ssp.resctr Resource Center with links to online publications and other information.

ssp.resctr.rte SP Resource Center
x PSSP image: ssp.en_US.* US English ISO8859-1, ISO8859-15

ssp.msg.en_US.authent SP Authentication Server Messages

ssp.msg.en_US.basic SP System Support Messages

ssp.msg.en_US.cediag SP CE Diagnostic Messages

ssp.msg.en_US.clients SP Authenticated Client Messages

ssp.msg.en_US.pman SP Problem Management Messages

ssp.msg.en_US.spmgr SP Extension Node Manager Messages

ssp.msg.en_US.sysctl SP Package Messages

ssp.msg.en_US.sysman Optional System Management Messages

PSSP image: ssp.En_US.* US English IBM-850

ssp.msg.En_US.authent SP Authentication Server Messages

ssp.msg.En_US.basic SP System Support Messages

ssp.msg.En_US.cediag SP CE Diagnostic Messages

ssp.msg.En_US.clients SP Authenticated Client Messages

ssp.msg.En_US.pman SP Problem Management Messages

ssp.msg.En_US.spmgr SP Extension Node Manager Messages

ssp.msg.En_US.sysctl SP Package Messages

ssp.msg.En_US.sysman Optional System Management Messages
You can choose to install complete images or only selected file sets. Keep in mind that some optional components require others. See the respective planning and migration sections in this book for dependencies. For information on which PSSP file sets to install on the control workstation and which to install on a node, see the books PSSP: Installation and Migration Guide and PSSP: Managing Shared Disks.

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