Editing Prerequisite Properties - IBM Prerequisite Scanner User Manual

Editing prerequisite properties

You can edit prerequisite properties, change the expected values for those
prerequisite properties, or change the associated values of the qualifiers.
Before you begin
Check whether the new value is a valid value that is supported by the prerequisite
property. For example, the Disk prerequisite property expects a numeric format
with either the MB or GB unit. If you want to check the available disk space in
terabytes (TB), you must extend the compare API to support TB comparisons. You
must also edit the Disk prerequisite property in the relevant configuration files.
Check the predefined qualifiers and valid values for the prerequisite property, as
outlined in "Predefined qualifiers for prerequisite properties" on page 8.
Procedure
1. Open the configuration file.
2. For each prerequisite property that you want to edit, enter the new expected
v qualifier_value is the value for the optional attribute. Each qualifier and its
value must be delimited by a : colon.
v property_value is the value for the prerequisite property and it can be a string
or integer.
For example, env.tcrhome is a custom prerequisite property that checks the
home directory environment variable for Tivoli Common Reporting, and the
expected value should be True:
env.tcrhome=True
env.path.jar is a custom prerequisite property that checks whether the JRE is
set in the PATH environment variable, and the expected value should be False:
env.path.jar=False
Note: You must then create the following files to check for and compare the
custom prerequisite property as required: a custom collector to collect the
actual value for the prerequisite property and a custom evaluator only if the
standard compare functions cannot compare the actual and expected values.
value or change the value for the qualifier. For example, a new system
administrator is the root user, so the value for the user.userID prerequisite
property must change. Change the value to the new name:
user.userID=smithj
For example, the type qualifier for the os.ulimit prerequisite property
currently has a value of filedescriptorlimit to check the limit for the file
descriptors. You might want to check another limit such as the stack size.
Change the following qualifier's value for the prerequisite property from:
os.ulimit=[type:filedescriptorlimit]8192+,unlimited
to:
os.ulimit=[type:stacksizelimit]512+,unlimited
Important: You can use the predefined qualifiers only with specific predefined
prerequisite properties, as outlined in Table 5 on page 9.
Chapter 3. Extending Prerequisite Scanner
45