Amazon Simple Storage Service (Amazon S3) discovery with Patterns

  • Release version: Zurich
  • Updated February 12, 2026
  • 4 minutes to read
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    Summary of Amazon Simple Storage Service (Amazon S3) discovery with Patterns

    The ServiceNow Discovery application uses the Amazon AWS S3 pattern to identify both public and private Amazon S3 storage buckets via REST API calls. This pattern can be triggered through discovery schedules or AWS Config events that notify ServiceNow of resource configuration changes. It supports discovery in standard AWS regions as well as the AWS GovCloud (US) region, though discovery of outgoing connections for GovCloud buckets will be supported in future releases.

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    This feature is compatible with ServiceNow Jakarta Patch 10, Kingston Patch 8, and London Patch 1 releases. The latest Discovery and Service Mapping Patterns application from the ServiceNow Store may be required for full functionality.

    Prerequisites and Configuration

    • AWS IAM User Policy: Create and configure an IAM user policy with AmazonS3ReadOnlyAccess permissions.
    • AWS Credentials: Configure access and secret keys for the AWS service account.
    • Logical Datacenter Discovery: Run discovery on AWS cloud service accounts to detect logical datacenters hosting S3 buckets.
    • Discovery Schedule: Create schedules for AWS accounts to automate discovery processes.
    • AWS Event Service: Enable AWS Config-based event processing to support alert-based discovery.
    • MID Server: Ensure the MID Server hosting the discovery meets system requirements.
    • REST API Permissions: Use the Cloud Discovery patterns spreadsheet from the ServiceNow Store to grant necessary user permissions and keep patterns updated quarterly.

    Discovered Data and CI Relationships

    The discovery process collects key details about each S3 bucket, including:

    • Bucket name and creation date
    • Cloud provider (Amazon AWS)
    • Amazon Resource Name (ARN)
    • Service name (defaulted to S3)
    • Account owner ID
    • Encryption type (None, AES-256, AWS-KMS)
    • Access control details (ACL and policy access types)
    • Replication destination bucket ARN

    ServiceNow visualizes these buckets in Dependency Views, showing replication relationships and hosting on logical datacenters. Service Mapping can additionally discover outgoing connections from S3 buckets to other AWS resources like Lambda functions, enhancing service maps.

    Troubleshooting

    • REST Timeout During Discovery: If discovery messages indicate REST timeout errors due to many CIs responding, increase the mid.sa.cloud.requesttimeout parameter on the MID Server (default is 30000 ms) and rerun discovery.
    • Pattern Designer Timeout: If debugging patterns fails with a timeout, increase the sa.debugger.maxtimeout parameter on the MID Server (default is 240 seconds) to allow longer debug sessions.

    Practical Benefits for ServiceNow Customers

    Using the Amazon S3 discovery pattern enables ServiceNow customers to automatically detect and maintain an up-to-date inventory of S3 buckets across their AWS environments, including GovCloud regions. This facilitates improved asset visibility, compliance tracking, and service mapping by linking storage buckets to other AWS resources. Alert-based discovery using AWS Config events ensures timely updates to configuration changes, reducing manual overhead. Troubleshooting guidance helps maintain discovery reliability and performance.

    The ServiceNow Discovery application uses the Amazon AWS S3 pattern to find public and non-public storage buckets of Amazon Simple Storage Service. The pattern uses a set of REST API calls to find these resources. Discovering some of these resources may require updating to the latest version of the Discovery and Service Mapping Patterns application from the ServiceNow Store.

    In addition to the discovery schedule, the ServiceNow instance triggers the Amazon AWS S3 pattern when AWS Config sends an event to the ServiceNow instance. Config is a service that continuously monitors AWS resources and sends events to the ServiceNow every time it senses that a resource configuration has changed.

    Amazon AWS S3 pattern can also discover AWS S3 buckets located in the AWS GovCloud (US) region. For AWS S3 located in the AWS GovCloud (SU), the pattern cannot discover AWS S3 outgoing connections to other cloud resources like Lambda function. Discovery of outgoing connections for AWS S3 will be supported in future releases.

    You can use this pattern on the ServiceNow platform using Jakarta Patch 10, Kingston Patch 8, or London Patch 1.

    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.

    Prerequisites

    • If you use Identity and Access Management (IAM) to manage users in Amazon Web Services (AWS) platform, ensure that you created a user policy for the AWS user. For more information, refer to Create an IAM user policy for Cloud Provisioning and Governance in the ServiceNow Cloud Provisioning and Governance documentation.
    • Configure the AWS service account.
    • Configure AWS credentials, using a secret key and an access key.
    • AmazonS3ReadOnlyAccess policy user permissions.
    • Discover Logical Datacenters hosting S3 buckets as described in Run Discovery on an AWS cloud service account in the ServiceNow Cloud Provisioning and Governance documentation.
    • Create a schedule for the relevant AWS service account as described in Schedule Discovery on a service account in the ServiceNow Cloud Provisioning and Governance documentation.
    • To enable alert-based discovery, configure the AWS event service as described in Set up AWS event processing for Discovery and Service Mapping in the ServiceNow Cloud Provisioning and Governance documentation.
    • For Cloud Discovery, download the Discovery and Service Mapping Patterns from the ServiceNow Store.
    • When installing the MID Server, ensure that the host machine meets or exceeds the MID Server system requirements published on the ServiceNow documentation site.

    Verify the REST API Permissions

    Download the Cloud Discovery patterns spreadsheet so you can grant user permissions required for running the Discovery patterns. In addition to permissions, the spreadsheet also includes useful information such as pattern names, types, CI Classes, and links to vendor documentation. New patterns are available quarterly, so check periodically to be sure you have the latest version of the spreadsheet.

    Note:
    You can test the AWS REST APIs using Postman API platform. For more information, see the How to test AWS REST API using POSTMAN [KB0782183] article in the Now Support Knowledge Base.

    Data collected by Discovery during horizontal discovery

    Table and field Description
    Cloud Object Storage [cmdb_ci_cloud_object_storage]
    Bucket name [bucket_name] The name of the AWS S3 bucket. You can discover all buckets hosted on a Logical Datacenter during one discovery process.
    Creation date [creation date] Creation date of the AWS S3 bucket.
    Cloud provider [cloud_provider] Amazon AWS
    Object ID [object_id] The Amazon Resource Name (ARN), expressed in this format: arn:aws:s3:::<bucket name>
    Service name [service_name] Set to S3 by default.
    Owner [owner] Account ID in which the bucket exists.
    Encryption type [encryption_type] Type of encryption for this bucket. The choices are:
    • None
    • AES-256
    • AWS-KMS
    ACL access type [acl_access_type] The choices for access control types are:
    • Public
    • Not Public
    Policy access type [policy_access_type] The choices for policy access types are:
    • Public
    • Not Public
    Replication destination [replication_destination] Bucket ARN of the Replication Destination bucket.
    Note:
    In Discovery and Service Mapping Patterns versions before 1.30.2, the Owner field displays the bucket owner's name.
    On the Dependency Views map you can see all discovered S3 buckets in your organization, including S3 buckets that you configured as replicas. In this example, Cloud Object Storage 1, Cloud Object Storage 2, and Cloud Object Storage 3 replicate Cloud Object Storage 2. In its turn, Cloud Object Storage 2 replicates Cloud Object Storage 1.
    Figure 1. Dependency Views showing AWS S3 components
    Result of horizontal discovery of AWS S3 as appears in Dependency Views

    CI relationships

    These relationships are created to support AWS S3 discovery:
    CI Relationship CI
    cmdb_ci_cloud_object_storage Replicates to::Replicated By cmdb_ci_cloud_object_storage
    cmdb_ci_cloud_object_storage Hosted on::Hosts cmdb_ci_logical_datacenter

    Data discovered by Service Mapping during top-down discovery

    Service Mapping can discover AWS S3 outgoing connections to cloud resources, for example Lambda function.

    Figure 2. Application service map showing an S3 bucket CI

    Service Mapping map showing a service with discovered S3 buckets.

    Troubleshooting

    If the mapping process does not proceed as you expected, follow the following suggestions.
    Symptom Cause Solution
    Discovery fails. The discovery message contains the information about an error caused by the REST timeout. There are many CIs sending the REST call response in the deployment. The MID Server cannot process the REST call response without exceeding the time limit controlled by the mid.sa.cloud.request_timeout parameter. By default, the mid.sa.cloud.request_timeout parameter is set to 30000 milliseconds.
    Increase the value of this parameter on the relevant MID Server and run discovery again.
    Note:
    If the Configuration Parameters related list for the relevant MID Server does not show this parameter, you may need to add it.
    Pattern Designer fails during a debug session. The Pattern Designer message contains information about an error caused by a timeout. The Pattern Designer fails because of a timeout during pattern debugging (and not during discovery). By default, the sa.debugger.max_timeoutparameter is set to 240 seconds.

    Increase the value of this parameter on the relevant MID Server.