> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/harness-platform/3.0/harness-platform-resources/service-discovery/customize-agent.md).

# Customize Discovery Agent

This topic describes how to create a discovery agent and configure it to discover services, edit it, and delete it.

#### Create Discovery Agent <a href="#create-discovery-agent" id="create-discovery-agent"></a>

1. Navigate to **Project Settings** and select **Discovery**.
2. Click **New Discovery Agent**.
3. Specify the following variables:
   * **Environment** (this is created earlier, and is the place where you install infrastructure)
   * **Infrastructure** (this is created earlier, where your target cluster is housed).
   * Specify **Discovery Agent Name**.
   * For the **Namespace**, provide the dedicated namespace you created in your target cluster for Harness. This is the namespace where Harness runs chaos runners, discovers services and executes chaos experiments.

     ![create agent](https://204875495-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiHCl4N3pQkjhOYjQoOs7%2Fuploads%2Fgit-blob-31a740c81d4a2578f0b5773a8c99df41135ecc6b%2Fcreate-agent-1.png?alt=media)
4. Select one of the following based on your requirement.
   * **Namespace Selector**: Selects one or more namespaces based on [level selector](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/).
   * **Exclusion**: Select this option to avoid Harness from discovering certain namespaces. Provide the name of the namespaces to be excluded.
   * **Inclusion**: Select this option to allow Harness to discover specific namespaces. Provide the name of the namespaces to be included.
5. If your cluster control plane node has a taint, **Add Node Selector** so that Harness launches its pod only on the worker nodes.

   ![node selector](https://204875495-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiHCl4N3pQkjhOYjQoOs7%2Fuploads%2Fgit-blob-ef33fc52bd3348ffeb5514d71a7e1da3e46286fa%2Fnode-selector-3.png?alt=media)
6. Populate the **Use this Service Account** field with the Service Account name that you created in the dedicated namespace in your target cluster for Harness.

   ![service account](https://204875495-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiHCl4N3pQkjhOYjQoOs7%2Fuploads%2Fgit-blob-5c78cc032a9a5be58c02d2f05bed640dd3e08ca8%2Fservice-acc-4.png?alt=media)
7. Click **Create New Discovery Agent** on the top right corner of the page.

#### Edit Discovery Agent <a href="#edit-discovery-agent" id="edit-discovery-agent"></a>

1. To edit a discovery agent, navigate to the agent (that you created earlier) and click **Edit**. Make the necessary changes to the required fields.
2. Select **Update Discovery Agent**.

#### Delete Discovery Agent <a href="#delete-discovery-agent" id="delete-discovery-agent"></a>

1. To delete a discovery agent, navigate to the agent you want to delete and select **Delete**.
2. Select **Delete**.

{% @harness-feedback/feedback %}