When you perform discovery with a pattern, you can choose what to do with configuration items (CIs) that are in the CMDB but Discovery can no longer find.
주:
Deletion strategies are available only with patterns, not probes/sensors.
When you use a pattern to perform discovery, you identify a CI Type, which is the main CI you are trying to find, such as an IIS web server or Tomcat server. Discovery can also find related CIs and populate the CMDB accordingly. For example, after Discovery finds an IIS server with the IIS pattern, it can also find these related CIs:
The Windows machine that hosts the web server
The configuration files for the IIS server
The web site that the IIS server hosts
The dependency map on the main CI also shows the related CIs, as illustrated by the following
graphic:그림 1. An example of an IIS server main CI and its related CIs
After you discover the main CI and its related CIs for the first time using a pattern, you need to manually configure an entry in the Related CI Types [sa_ci_to_pattern] table for each relation between the main CI and a related
CI type. These records are where you determine the deletion strategy for each related CI based on its type. Note that you cannot set a deletion strategy for the main CI for Infrastructure pattern type.
You can view a list of the relations as the following image illustrates:그림 2. Example CIs related to an IIS server
The deletion strategy on a related CI takes effect when both of these conditions occur:
After you run Discovery with the pattern again.
Discovery successfully finds the main CI but cannot find the related CI.
These deletion strategy options are available:
Value
Description
Keep
Preserves the configuration file CI record and makes no other changes to the record. This option is the default setting.
Delete
Deletes the configuration file CI record from the CMDB, and the relationship to the main CI.
Mark as absent
Marks the Status [install_status] field of the configuration file CI record as Absent, meaning that Discovery cannot find the tracked configuration file. This status does not instruct the system to delete the actual CI or the relationship.
주:
There are two tables that do have their CIs
deleted if marked as absent: cmdb_ci_network_adapter and cmdb_ci_ip_address.
Delete relations
Deletes only the CI relationships between the related CI and the main CI.
Mark as retired
Marks the Status [install_status] field of the configuration file CI record as Retired, meaning that Discovery no longer uses this configuration file. This status does not instruct the system to delete the actual CI or the relationship.
주:
Deletion strategies are not available for related entries, which are rules that are based on related CIs. For more information, see Related entries.
