Discover all resources in a datacenter on-demand

  • Release version: Xanadu
  • Updated August 1, 2024
  • 2 minutes to read

    • At any time, you can run Discovery on a datacenter to update the CMDB.

    Before you begin

    • A cloud account must exist with service accounts and associated datacenters. You must run on-demand Discovery to discover datacenters before you can schedule Discovery.
    • Use the Cloud Discovery Workspace, and at least version 1.15 of Discovery and Service Mapping Patterns from the ServiceNow Store.

    Role required: sn_cmp.cloud_admin

    Procedure

    1. In the Cloud Admin Portal, navigate to Manage > Cloud Accounts.
    2. Click a cloud account and, on the Datacenters tab, select a datacenter.
      The Resources tab lists the resources in the CMDB.
      Resources in the selected datacenter
    3. Change the state to Draft and then click Discover Now.
      Note that Discover Now is disabled if neither CAPI or Patterns is installed. Follow these scenarios to proceed.
      Note:
      Discover now will also be disabled with an message suggesting you to install the latest Discovery and Service Mapping Patterns. This can be fixed by installing version 1.15.1 at least or by triggering the manual migration step.
      ScenarioNext steps
      Discover Now is disabled for System Admin login
      • The page suggests that you must install the latest patterns application to proceed.
      • The banner at the top of the page prompts you to visit Go to Applications Manager for installation
      Discover Now is disabled for sn_cmp Cloud Admin login
      • The page suggests that you must install the latest patterns application to proceed.
      • The page requests to contact the system admin for installation of patterns application.
      Latest patterns application is installed Discover Now is activated.
      Note:
      Discovery will now use Patterns as the default mechanism.
    4. Run Discover Now and wait for Discovery to finish.
    5. Change the state of the cloud account to Published.

      Discover now will be disabled with the same message shown. This can be fixed by installing 1.15.1+ version or by triggering the manual migration step

    Result

    Discovery populates the CMDB with the discovered resources and updates the information on the Resources tab. You can view Discovery results in the Discovery Log tab.
    Note:
    By default, Discovery stores the discovered VM hardware types in the Hardware Type [cmdb_ci_compute_template] table. If you notice an unusually large number of records in this table, use the Cloud Hardware Type [cmdb_ci_cloud_hardware_type] table to store the discovered VM hardware types. For more information, see Enable the Cloud Hardware Type class extension. All Cloud Provisioning and Governance features, such as provisioning, quotas, and so on continue to work as is after you switch to the Cloud Hardware Type table.