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

    shellcopydownload
    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

shellcopydownload
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 Settings > Web and mobile monitoring > 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 C:\ProgramData\dynatrace\oneagent\agent\config
2. Go to the certificates folder (create it if it doesn't exist)
3. Upload your ca.pem or root.pem generated earlier

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

Next step: Extension package