> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/advanced-topics-pentaho-data-integration-overview/connecting-to-a-hadoop-cluster-with-the-pdi-client-article/adding-a-cluster-connection-connect-to-a-hadoop-cluster-with-the-pdi-client/test-the-cluster-connection-add-hadoop-cluster-connection.md).

# Configure and test connection

After you have created a new cluster manually or by import, the Test results dialog box appears. Each component in the dialog box displays one of the following three icons:

* ![Green checkmark](/files/E64W678sAyjHOgTPrAD8) A green checkmark indicates that the connection to the cluster service was successful.
* ![Red No symbol](/files/hebO3g12xeDtAm36GuSd) A red "no symbol" indicates that the connection failed. Check your connection information. If you suspect a different issue, see the troubleshooting section in the **Install Pentaho Data Integration and Analytics** document or consult your cluster administrator.
* ![Yellow Skipped icon](/files/oUUKaF5MKUVVbrCLQI4o) A yellow warning symbol indicates that the cluster service information was not supplied, so the test for that component was skipped.

Perform the following steps to test a connection:

1. In the **View** tab tree, right-click the cluster you want to test and click **Test cluster**.
2. Test results appear in the Test results window.

   **Note:** You can click the drop-down arrow in the **Hadoop file system** test for more details on the file system test.

   If you have errors, see the troubleshooting section in the **Install Pentaho Data Integration and Analytics** document to resolve the issues or consult your cluster administrator, then test again. When no error messages are returned, the connection is properly configured.

   ![PDI Hadoop clusters test result](/files/jVkdKq3EIwc7NlD5tGgh)
3. Click **Close** in the Hadoop Cluster Test dialog box.


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