CMDB CI Class Models

  • Release version: Yokohama
  • Updated March 5, 2025
  • 2 minutes to read
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    Summary of CMDB CI Class Models

    The CMDB CI Class Models app extends the ServiceNow Configuration Management Database (CMDB) by adding specialized class models that enhance the base-system CMDB classes. These extensions include detailed class descriptions, identification rules, identifier entries, and dependent relationships, enabling more precise and comprehensive configuration item (CI) management.

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    This app is essential for customers who want to leverage enhanced CI class structures to improve discovery accuracy and service mapping by incorporating additional technologies and software into the CMDB.

    Key Features

    • Extended Class Hierarchy: Adds new classes, columns, and metadata to key CMDB tables such as CMDB Class Information, Identifier, Identifier Entry, and CMDB Metadata Hosting Rules.
    • Identification and Dependency Management: Supports identification rules and dependent relationships to accurately classify and relate CIs.
    • Compatibility with Discovery and Service Mapping: Enables Discovery and Service Mapping applications to utilize the extended classes for improved detection and population of CIs.
    • Integration with Related Apps: Works alongside other ServiceNow Store apps like Discovery patterns and Service Graph Connectors for enhanced device and application discovery and third-party data integration.

    Using the Classes

    Customers can use these extended classes in the same way as native CMDB classes. This enables Discovery and Service Mapping to recognize additional technologies and software, facilitating richer and more accurate CMDB population.

    Supported Software and Technologies

    The app supports discovery of a variety of software and technologies through specific extension classes, including but not limited to:

    • Avi Load Balancer (Avi Vantage)
    • BYOL Model of RDS for Oracle
    • Firewalls
    • IBM Hardware Management Console (HMC) and Virtualization
    • Internet of Things (IoT)
    • Nutanix Acropolis
    • OpenStack Resources
    • Red Hat Virtualization (RHV)
    • Transport Layer Security (TLS)
    • VMware NSX Load Balancer and Advanced Load Balancer

    Each of these technologies is supported by corresponding Discovery patterns that leverage the extended classes for accurate detection.

    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.

    Classes added by the CMDB CI Class Models app

    For the full list of added classes, see List of classes added by the CMDB CI Class Models app.

    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

    Using the classes

    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.

    Related ServiceNow® Store apps and reference information:

    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