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WMI data source tutorial

This is a step-by-step tutorial for building a WMI data source-based extension. You will build a WMI extension that runs on OneAgent and monitors a Windows host.

Before you begin

To successfully develop an Extensions 2.0 extension and be able to complete this tutorial, you need to fulfill the following prerequisites:

  • Admin access to a Dynatrace SaaS or Managed environment version 1.227+
  • Windows host (virtual machine)
  • OneAgent version 1.227+ deployed on the host
  • Dynatrace CLI
    • Python 3.8 or 3.9
    • Access to pip package installer for Python
    • Install dt-cli 
      shell
      pip install dt-cli
      For more information, see Sign extensions.
  • Your root certificate uploaded to Dynatrace and on the OneAgent host

1. Generate a developer certificate and key

shell
dt extension gencerts

The command generates the following files:

  • developer.pem - your developer certificate
  • developer.key - your developer key
  • ca.pem - your root certificate
  • ca.key - your root key

2. Distribute the root certificate to Dynatrace components

2a.Upload to the Dynatrace Credential Vault

  1. From the navigation menu, select Manage > Credential vault.
  2. Select Add new credential.
  3. For Credential type, select Public Certificate.
  4. Add a meaningful Credential name.
  5. Upload the Root certificate file.
  6. Select Save.

2b. Upload to OneAgent host that runs the extension

  1. Go to
    • Windows: C:\ProgramData\dynatrace\oneagent\agent\config
    • Linux: /var/lib/dynatrace/oneagent/agent/config/
  2. Go to the certificates folder (create it if it doesn't exist)
  3. Upload your root certificate (ca.pem) generated earlier

Your Dynatrace environment is ready to start creating your WMI extension.

Next step: Extension package