CMDB CI Class Models

  • Release version: Zurich
  • Updated July 31, 2025
  • 2 minutes to read
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    Summary of CMDB CI Class Models

    The CMDB CI Class Models ServiceNow® Store app enhances the Configuration Management Database (CMDB) by adding extended class models to the existing CMDB class hierarchy. These extensions include detailed class descriptions, identification rules, identifier entries, and dependent relationships where applicable. The added classes function like native CMDB classes and enable applications such as Discovery and Service Mapping to better populate and discover configuration items (CIs) related to various technologies and software.

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    Key Features

    • Extended CMDB Classes: Adds new classes, columns, and metadata stored in tables including CMDB Class Information, Identifier, Identifier Entry, and CMDB Metadata Hosting Rules.
    • Discovery Support: Supports discovery of specific technologies and software by leveraging extension classes, improving accuracy and completeness of CI data.
    • Technology Coverage: Provides extension classes for technologies such as Avi load balancers, Oracle RDS, Firewalls, IBM Hardware Management Console, IoT, Nutanix, OpenStack, Red Hat Virtualization, Transport Layer Security, VMware NSX, and more.
    • Integration with Discovery Patterns: Works alongside related Discovery patterns and Service Graph Connectors to streamline data import and integration from third-party sources.

    Practical Use and Verification

    After installing the CMDB CI Class Models app, verify successful installation by navigating to All > Configuration > CI Class Manager in ServiceNow. Use the Hierarchy view to see the list of added classes and review their details, identification rules, and dependent relationships. This ensures that the extended classes are properly integrated into the CMDB structure.

    Important Considerations

    Uninstalling this app may compromise CMDB integrity and lead to unexpected behavior, so it should be done with caution.

    The CMDB contains base-system classes that store data about configuration items (CIs). The CMDB CI Class Models ServiceNow® Store app adds class models that extend the CMDB class hierarchy, including class descriptions, identification rules, identifier entries, and dependent relationships if applicable.

    You can use the added classes like any other class. Applications such as Discovery and Service Mapping can use class extensions to populate CIs and to discover technologies and software.

    See the CMDB CI Class Models release notes.

    Related ServiceNow® Store apps and reference information:

    Add class models

    The app adds classes, columns, and associated metadata as related records in the following tables:
    • CMDB Class Information [cmdb_class_info]: Class descriptions
    • Identifier [cmdb_identifier]: Identification rules
    • Identifier Entry [cmdb_identifier_entry]: Identification entries
    • CMDB Metadata Hosting Rules [cmdb_metadata_hosting]: Dependent relationships

    Discover using extension classes

    The following table lists the software and technologies that applications can discover using the extension classes. It provides links to documentation for CMDB CI Class Models and the corresponding discovery patterns.
    Software/Technology CMDB CI Class Models Store app Discovery patterns
    Avi load balancer Avi load balancer extension classes Avi Vantage load balancer discovery
    BYOL Model of RDS for Oracle BYOL model of RDS for Oracle extension classes
    Firewall Firewall extension classes
    IBM Hardware Management Console (HMC) IBM Hardware Management Console (HMC) extension classes IBM Virtualization and Hardware Management Console discovery
    Internet of Things (IoT) Internet of Things (IoT) extension classes N/A
    Nutanix Nutanix extension classes Nutanix Acropolis discovery
    OpenStack OpenStack extension classes OpenStack resource discovery
    Red Hat Virtualization (RHV) Red Hat Virtualization (RHV) extension classes Red Hat Virtualization discovery
    Transport Layer Security (TLS) Transport Layer Security (TLS) extension classes Discovery procedures provided by Certificate Inventory and Management ServiceNow Store app
    VMware NSX load balancer VMware NSX load balancer extension classes VMware NSX Advanced load balancer discovery

    Request apps on the Store

    Visit the ServiceNow Store website to view all the available apps and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the ServiceNow Store version history release notes.

    Verify successful installation

    After installing the CMDB CI Class Models store app, make sure the classes were added successfully:
    1. Navigate to All > Configuration > CI Class Manager.
    2. Select Hierarchy to display the CI Classes list.

      This list contains the added classes, such as the Nutanix classes.

    3. Select a class to see the corresponding class details, identification rules, identifier entries, and dependent relationships, if applicable.
    Warning:
    Uninstalling the CMDB CI Class Models application might compromise the integrity of the CMDB and result in unexpected behavior.