Thank you for your answer.
However as the answer state "Ensure that adequate permissions for the Local Service account are set for the root of the drive where Tableau Server is installed. "
In our setup both server and worker runs under Administrator account two different machines respectively
I am having exact same issue with Tableau Server 2018.1.4. My workers and primary are in same domain. all necessary ports are open in firewall. Run as user has Admin privileges. I tried clean reinstall of server and worker also.
but still gets
DRb::DRbConnError:druby://<SERVER_NAME_HERE>:3730 - #<Errno::ECONNREFUSED: Connection refused - Connection refused>
Manolis Vrailas, Did you found any solution for this issue.
telnet <worker IP> 3730 ---- Sometimes works