# Test a cluster connection

Perform the following steps to test a cluster connection:

1. In the PDI client, select the **View** tab and navigate to the **Hadoop clusters** folder.
2. If needed, expand the **Hadoop clusters** folder then right-click the cluster you want to test and select **Test cluster**.

   The **Test results** dialog box appears.

   ![Test results dialog box](/files/PJbizLk0lNwqxTKHqQKP)

   For each tested connection, the dialog box displays one of the following icons to indicate the results:

   * ![Green checkmark symbol](/files/YIN5O6zU3icYMUQ4OSu6) A green checkmark indicates the connection to the cluster service was successful.
   * ![Yellow caution symbol](/files/24aOf4YOFfUAaap40Li9) A yellow caution symbol indicates the cluster service information was not supplied, so the test for that component was skipped.
   * ![Red circle-backslash symbol](/files/fUHS6TXM8M5xjm71LWbJ) A red circle-backslash indicates the connection failed. Check the connection information and then test the connection again. If you suspect a different issue, see the troubleshooting section in the **Install Pentaho Data Integration and Analytics** document or consult the cluster administrator.**Note:** You can click the drop-down arrow in the **Hadoop file system** test for more details.
3. Click **Finish**.

If no errors occur during the connection, PDI is successfully connected.

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


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