Tran, if you install Tableau Desktop on this machine (The Tableau Server box) and open your viz, are you able to connect to SSAS? Is Tableau Server in any way "firewalled" from the rest of your network (where SSAS is running)?
Thanks for your help.
I turned off firewall. I still setup full dirve.
I find the error is Services Run as User.
When I configuration defaults NT AUTHORITY\NetworkService, I can add tableau server worker nodes but i have an error above. When I change configuration another, I don't add Tableau Server worker nodes but the error message isn't appear.
It's difficult to configuration Improve Server Performance and use data source SSAS.
If you use worker nodes, you'll need to use a Domain account for your RunAs user.
If you use worker nodes, make sure to install the SSAS driver on the worker nodes, as well.