Log in to your Tableau Dashboard as Admin.
Go to Authentication Settings in the Settings menu.
Enable SAML authentication by checking the Single Sign On with SAML checkbox.
Note down the Tableau Entity ID and Assertion Consumer Service URL (ACS URL) which will be needed to configure the plugin. Note: If your Tableau SP is configured to send Signed Requests then you will need to provide the certificate in the plugin as well. You can get the certificate from the Tableau Metadata.
Service Provider Name  Choose appropriate name according to your choice .
SP Entity ID or Issuer  Tableau Entity ID .
ACS URL  Tableau Assertion Consumer Service URL .
[For Signed Request]  Paste certificate value you copied from the Tableau Metadata file .
You will need to upload the IdP metadata or give certain IdP information in Tableau. You can get this information from the IDP METADATA Tab in the plugin.
Select users you want to enable SSO in the Tableau dashboard.
Login into your Drupal instance using your admin account.
Click on Install new module in your drupal instance.
Upload the downloaded plugin as a .zip file. Then click on Install.
After successful installation, click on Enable newly added modules and enable the plugin. Then click Save configuration button.
Configure your Identity Provider i.e. provides details of Service Provider. (These details can be found from your service provider). Then click on Save Configuration.
Configure Service Provider i.e. provide Identity Provider details to the Service Provider.
Attribute Mapping: Choose an attribute value and then click on Save.
You have now successfully configured Drupal as your IdP!
Click on the Test Login button in the Tableau Dashboard to Test the SSO.
You can see the following screen after a successful SSO.