Command Validation Tasks form for pattern-based discovery

  • Release version: Zurich
  • Updated July 31, 2025
  • 2 minutes to read
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    Summary of Command Validation Tasks form for pattern-based discovery

    The Command Validation Tasks form in ServiceNow’s pattern-based discovery enables customers to create or modify tasks that test specific discovery pattern commands. This functionality helps ensure the accuracy and success of commands used during discovery processes, particularly when troubleshooting command execution failures.

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    Key Features

    • Automatic Task Number: Each validation task is assigned a unique number automatically by the system.
    • MID Server Selection Method: Choose how to select the MID Server for testing:
      • Specific MID Server: Manually specify a MID Server.
      • Automatic MID Selection: Use a MID Server assigned to the IP range or network configured for Discovery.
      • Try All Eligible MID Servers: Attempt with any available MID Server for the IP range or network.
    • MID Server Field: Appears when “Specific MID Server” is selected, allowing direct MID Server selection.
    • Validate All Pattern Commands: Option to validate all commands associated with a pattern simultaneously, simplifying comprehensive testing.
    • OS Class: Defines the CI class representing target servers for validation, ensuring commands are tested against appropriate server types.
    • Command Type: Select the type of command to validate, supporting Shell Command, WMI Query, SNMP Query (Tabular/Scalar), SNMP Walk, or HTTP GET (with Basic Authentication).
    • IP Addresses: Specify individual IP addresses, IP ranges, or IP networks (using slash notation) where the command validation will run. Requires the ParseIPRanges script include for range/network usage.
    • Commands: Select specific commands to test, typically those that failed during discovery. This is available when not validating all pattern commands.
    • Pattern: Specify the discovery pattern for which command validation is performed, also available when individual commands are selected.

    Practical Use and Benefits

    This form empowers ServiceNow customers to systematically validate discovery commands, improving diagnostic capabilities and reducing discovery failures. By specifying MID Servers, IP targets, and command types, customers can tailor validation tests precisely to their environment. The option to validate all commands simultaneously streamlines comprehensive checks, while individual command testing aids targeted troubleshooting. Proper use of IP range/network notation enhances flexibility in large-scale environments.

    Command Validation Tasks form displays the fields that you must fill when you create or modify a task for testing a pattern command.

    For more information about testing pattern commands, see Validate commands used in pattern-based discovery.

    Field Description
    Number The task number is automatically created by the system.
    MID Server Selection Method Select the relevant method:
    • Specific MID Server - To define the MID Server for this test.
    • Automatic MID Selection - To use a MID Server that's assigned to the IP range or IP network that you want to use for the test. Select this method only if you have configured a MID Server with IP ranges or as a default MID Server for Discovery.
    • Try All Eligible MID Servers - To use any MID Server available for the the IP range or IP network that you want to use for the test. Select this method only if you have configured a MID Server with IP ranges or as a default MID Server for Discovery.
    MID Server The MID Server name.

    This field appears only if Specific MID Server is selected from MID Server Selection Method.
    Validate All Pattern Commands The check box for validating all commands used by a specific pattern simultaneously.
    OS Class The CI class that represents the servers on which you run this validation task.
    Command Type The command type that depends on the kind of the server:
    • Shell Command
    • WMI Query
    • SNMP Query (Tabular and Scalar)
    • SNMP Walk
    • HTTP GET (for Basic Authentication credentials, not Token)

    This field is available only when Validate Al Patterns Commands isn't selected.
    IP Addresses Any combination of IP v4 Addresses, IP Ranges, or IP networks. For example:
    • 10.196.39.12, 10.196.39.12 - Comma-separated IP addresses for a list of standalone addresses.
    • 1.1.1.1-1.1.1.100 - Hyphen-separated IP addresses for an IP range.
    • 1.1.1.1/28 - Slash notation for an IP network.
    Note:
    To use IP range or IP network, ensure you have installed the ParseIPRanges script include. For more information, refer to KB1123625: Command Validation Tool.
    Commands The commands for which you want to test credentials. Typically, it's a command that discovery process failed to execute. For example, /api/v1/pods?limit=50 or sudo dmidecode.

    You can select only commands from the list of available commands.

    This field is available only when Validate All Patterns Commands isn't selected.
    Pattern The name of the pattern for which you want to validate the commands.

    This field is available only when Validate All Patterns Commands isn't selected.