AWS OS image pattern-based discovery

  • 릴리스 버전: Australia
  • 업데이트 날짜 2026년 03월 12일
  • 소요 시간: 4분

    • Discovery and Service Mapping Patterns finds AWS OS images (both owned and executable) on your cloud environment. Discovering some of these resources may require updating to the latest version of the Discovery and Service Mapping Patterns application from the ServiceNow Store.

    Discovery uses the Amazon AWS - Owned Template (LP) and Amazon AWS - Executable Template (LP) patterns to discover AWS OS images from your AWS account. Owned images are custom images created by your AWS account, while executable images include public and shared images your account has permission to use.

    When using the Image [cmdb_ci_os_template] table to store Cloud OS images, you may notice an unusually large number of records. To avoid this issue, you can store the discovered OS images in the Cloud Image [cmdb_ci_cloud_os_image] table. When enabled, Discovery launches the Amazon AWS - Owned Cloud OS Image (LP) and Amazon AWS - Executable Cloud OS Image (LP) patterns, which populate the Cloud Image [cmdb_ci_cloud_os_image] table. For more information, see Enable Cloud OS Image discovery.

    Pattern-based discovery and mapping requirements

    Verify the AWS discovery prerequisites section in AWS discovery using patterns.

    Data collected by Discovery during horizontal discovery

    Discovery populates the data in the CMDB when running the AWS OS image patterns.

    표 1. Image [cmdb_ci_os_template] or Cloud Image [cmdb_ci_cloud_os_image]
    Field Description
    Name [name] Name of the image.

    For example: CentOS 7.0-64 Minimal for VSI.
    Object ID [object_id] Unique identifier, allocated by Amazon AWS Cloud for this resource.
    Image Type [image_type] Type of the OS image.
    Root Device Type [root_device_type] The device name of the root device volume.

    For example: /dev/sda1.
    Image Source [image_source] Source of the OS image.
    Guest OS [guest_os] Operating system that is secondary to the OS.
    Provider [provider] The cloud provider, which is AWS.

    This field is only populated in the Cloud Image [cmdb_ci_cloud_os_image] table.

    CI relationships

    The AWS OS image patterns create these relationships to support AWS OS image discovery.

    CI Relationship CI
    Image [cmdb_ci_os_template] or Cloud Image [cmdb_ci_cloud_os_image] Hosted on::Hosts AWS Datacenter [cmdb_ci_aws_datacenter]
    Key value [cmdb_key_value] References Image [cmdb_ci_os_template] or Cloud Image [cmdb_ci_cloud_os_image]

    AWS Tag discovery

    Starting with Discovery and Service Mapping Patterns version 1.30.0, the pattern extension section discovers tags only. License discovery has moved to the Amazon AWS - Virtual Server (LP) pattern.

    표 2. Key value [cmdb_key_value]
    Field Description
    Key [key] Tag name.
    Value [value] Tag value.
    Configuration item [configuration_item] References the Image [cmdb_ci_os_template] or Cloud Image [cmdb_ci_cloud_os_image] table.