controls::establish retention set size for backups
Overview
The num_db_backups
parameter specifies the number of backups to retain for a database before marking the oldest backup as deleted. It is recommended that this parameter be set to at least 12.
Rationale:
Retain multiple copies of the database backup to ensure that the database can recover from an unexpected failure. This parameter should not be set to 0. Multiple backups should be kept to ensure that all logs and transactions can be used for auditing.
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Benchmarks
This control is used in the following benchmarks:
- DB2 Database 10 CIS V1.1.0 - paragraph 3.1.21
- DB2 Database 11 CIS V1.0.0.draft - paragraph 4.1.10
Skipping
To deliberately skip this control (e.g. meaning don’t use Puppet to enforce this setting), we provide you with three ways:
1) Add db2_secured::controls::establish_retention_set_size_for_backups: skip
to your hiera data. This will skip this control for ALL databases.
2) Add db2_secured::controls::establish_retention_set_size_for_backups::instance_name::dbname: skip
to your hiera data. This will skip this control for specified database only.
3) Add an entry with the content establish_retention_set_size_for_backups
to the array value db2_secured::skip_list
in your hiera data.
Attributes
Attribute Name | Short Description |
---|---|
title | The database identifier to apply the control to. |
title
The database identifier to apply the control to.
All controls need an database identifier to apply the control to. Here is a simple example:
db2_secured::controls::control_name { 'db2inst1/MYDB':}
In this example, the string dbinst1
is the instance, the string MYDB
is the database to apply the control to.
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