Documentation forHybrid Cloud Observability Essentialsand Server & Application Monitor

Discover your servers and applications in SAM

Discovery is a term that describes how the SolarWinds Platform identifies traditional physical servers, AWS EC2 instances, Azure VMs, Nutanix clusters, applications, and other type of items that already exist in your environment.

Before you begin:

  • Review your environment to determine what to monitor. See What should I monitor in SAM?
  • Enable Windows devices for WMI.
  • Enable the networking devices you want to monitor for SNMP.

Watch this video about Discovery.

Run the Discovery Wizard

The first time you run the Discovery Wizard (also called the "Network Sonar Wizard"), SolarWinds recommends adding a limited number of application servers, including Exchange, IIS, SQL, Linux, and Unix. The examples in this guide focus on monitoring IIS and the operating system of your application server, but the same steps apply to monitoring any application.

  1. If the Discovery Wizard does not start automatically after configuration, click Settings > Network Discovery.
  2. Click Add New Discovery, and then click Start.
  3. On the Network panel, if this is your first Discovery, add a limited number of IP addresses.

    As you scale your implementation, you can use the following scanning options.

    OptionDescription
    IP Ranges

    Use this option when you want the SolarWinds Platform to scan one or more IP ranges.

    If you have many IP ranges to scan, consider adding multiple discovery jobs rather than including all ranges in a single job.

    Subnets

    Use this option to scan every IP address in a subnet. SolarWinds recommends scanning at most a /23 subnet (512 addresses max).

    Scanning a subnet returns everything that responds to ping, so we recommend only scanning subnets where most devices are objects you want to monitor.

    IP Addresses

    Use this option for a limited number of IP addresses that do not fall in a range.

    Since a network discovery job can take a long time to complete, SolarWinds recommends using this option initially.

    Active Directory

    Use this option to scan an Active Directory Domain Controller.

    Using Active Directory for Discovery is particularly useful for adding large subnets because the SolarWinds Platform can use the devices specified in Active Directory instead of scanning every IP address.

  4. When the Agents panel appears, if any nodes use agents, select the Check all existing nodes.

    This setting ensures that any agents you deploy, including those on the SolarWinds Platform server, are up-to-date. If no nodes use agents, skip this option.

  5. On the Virtualization panel, you can discover VMware, Hyper-V host, or Nutanix entities.
    For example, to add a vCenter:
    1. Select Poll for VMware, and click Add vCenter or ESX Credential.

    2. Select <New credential> and provide required information.

      If you don't add host credentials, VMs on the host will still be discovered, but you won't see relationships mapped between the VMs and hosts.

      Click here to learn about VMware, Hyper-V, Windows Server, and Nutanix versions supported by SAM, which sync with versions supported in SolarWinds Virtualization Manager (VMAN).
  6. On the SNMP panel, to monitor SNMP-enabled devices, enter credentials and click Next.
  7. On the Windows panel, to discover WMI or RPC-enabled Windows devices, click Add New Credential and provide the required information.

    SolarWinds recommends monitoring Windows devices with WMI instead of SNMP. Also, note that WinRM is the default transport method used by WMI-based component monitors.

  8. On the Monitoring Settings panel, SolarWinds recommends manually setting up monitoring the first time you run Discovery so you can review the list of discovered objects and select what you want to monitor. Otherwise, you can configure Discovery to automatically start monitoring objects it finds.

  9. On the Discovery Settings panel, click Next.
  10. Accept the default frequency and run the Discovery.

    Discovery can last from 5 minutes to several hours, depending on the number of servers involved.

If the status of a node remains Unknown after Discovery, see Troubleshoot nodes and interfaces that are Unknown.