Components installed with CMDB Health

  • Release version: Washingtondc
  • Updated February 1, 2024
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    Summary of Components Installed with CMDB Health

    CMDB Health, part of the com.snc.cmdb plugin, includes various components such as tables, properties, and scheduled jobs designed to enhance configuration management database (CMDB) health monitoring. Access the Application Files table for a complete list of installed components.

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    Key Features

    • Properties:
      • glide.cmdb.serviceshierarchylimit: Sets the maximum number of service CIs in the dashboard, default is 10,000 (range: 0-100,000).
    • Scheduled Jobs:
      • Completeness, Compliance, and Correctness Score Calculation Scripts: Evaluate key performance indicators (KPIs) for CMDB health.
      • Relationship Score Calculation Script: Assesses CI relationships.
      • Relationship Compliance Processor: Checks compliance of relationships against rules.
      • Add/Remove Identifier Fields Jobs: Manage recommended fields for active identification rules.
    • Tables:
      • CMDB Health Metric: Contains settings for all CMDB Health KPIs and metrics.
      • CMDB Health Result: Stores results from the latest CMDB Health processing cycle.
      • CMDB Health Scorecard: Tracks current and historic health scores.
      • CMDB Health Orphan Rule: Defines rules for orphan records per class.
      • CMDB Recommended Fields: Lists recommended fields per class.
      • CMDB Health Metric Status: Monitors processing status of KPIs and metrics.
      • CMDB Health Processor Status: Tracks progress of KPI and metric processing.
      • CMDB Relationship All Rules Health Results: Stores relationship health results for reporting.

    Key Outcomes

    Utilizing these components allows ServiceNow customers to effectively monitor and improve CMDB health, ensuring better visibility and management of configuration items and their relationships. Customers can expect enhanced compliance, accuracy, and the ability to track historical data for informed decision-making.

    Several types of components are installed with CMDB Health (included in the com.snc.cmdb plugin), such as tables, properties, and scheduled jobs.

    Note:
    The Application Files table lists the components that are installed with this application. For instructions on how to access this table, see Find components installed with an application.

    Properties installed

    Property Description
    glide.cmdb.services_hierarchy_limit Maximum number of service CIs that can appear in the CMDB service dashboard. This limit applies to any child class of the Application Services [cmdb_ci_service_auto] class.

    Scheduled jobs installed

    Scheduled job Description
    CMDB Health Dashboard - Completeness Score Calculation Script for calculating the completeness KPI of CMDB health.
    CMDB Health Dashboard - Compliance Score Calculation Script for calculating the compliance KPI of CMDB health.
    CMDB Health Dashboard - Correctness Score Calculation Script for calculating the correctness KPI of CMDB health.
    CMDB Health Dashboard - Relationship Score Calculation Script for calculating the CI relationships KPI of CMDB health.
    CMDB Health Dashboard - Relationship Compliance Processor Script for calculating compliance of relationships with suggested relationships, and with hosting and containment rules.
    Add Identifier Fields In Recommended Rules Sets all criterion attributes from all active identifier entries from all active identification rules, as recommended fields. These added recommended fields are then checked by the CMDB Health Dashboard - Completeness Score Calculation scheduled job when evaluating the recommended health metric.
    Remove Identifier Fields In Recommended Rules Identifies any recommended field that is a criterion attribute in any active identifier entry in any active identification rule. Then removes the recommended setting for that field.

    Tables installed

    Table Description
    CMDB Health Metric

    [cmdb_health_metric]

    		 Details such as if a KPI or metric is enabled, maximum failure threshold, and other settings for all CMDB Health KPIs and metrics.
    CMDB Health Result

    [cmdb_health_result]

    		 Results from the most recent CMDB Health processing cycle.
    CMDB Health Scorecard

    [cmdb_health_scorecard]

    		 Current and historic health scores. Status of historic score records is 'Historic', and of latest score records is 'Complete’.
    CMDB Health Orphan Rule

    [cmdb_health_orphan_rule]

    		 Rules for calculating orphan records per class.
    CMDB Recommended Fields

    [cmdb_recommended_fields]

    		 Recommended fields per class.
    CMDB Health Metric Status

    [cmdb_health_metric_status]

    		 Internal table that tracks the status of each KPI and metric that is being processed. Includes status, processing time, and processing start date.
    State for a KPI or metric changes from 'In Progress' to either of:
    • Complete
    • MaxFailures
    • Daily Processing Time Out
    Processing of a timed out KPI or metric continues on the following day.
    CMDB Health Processor Status

    [cmdb_health_processor_status]

    		 Internal table that tracks the processing progress of each KPI and metric. Contains a list of tables that are processed for each KPI and metric, and processing status. Classes are processed sequentially, changing status from Draft -> In Progress -> Complete.
    CMDB Relationship All Rules Health Results

    [cmdb_health_result_rel_all]

    		 Stores results about relationship health, to be used by the All Relationships report.