Tableau Server the Tableau Prep Conductor Process Status Becomes Unavailable

A solution has been deployed for this known issue as outlined here. 

If you are on a version impacted by this issue, you can try:

Linux:
tsm stop
sudo /opt/tableau/tableau_server/packages/scripts.<version>/stop-administrative-services
sudo /opt/tableau/tableau_server/packages/scripts.<version>/start-administrative-services
tsm start

Windows:
tsm stop

cd C:\Program Files\Tableau\Tableau Server\packages\scripts.<build_number>
stop-administrative-services
start-administrative-services

tsm start

If the issue is experienced in the multi-node environment, you can restart OS (as well as stop & start-administrative-services), and then uninstall & reinstall the flowprocessor processes using tsm topology set-process. See steps below:

1. Change the flowprocessor's node role to no-flows in order to uninstall flowprocessor.
ex.
tsm topology set-node-role -n node1, node2 -r no-flows

2. Add a backgrounder to a node which doesn't have flowprocessor in order to install flowproecssor.
ex.
tsm topology set-process -n node3 -pr backgrounder -c 1

3. Pending changes apply.

4. Change the no-flows' node role to all-jobs in order to re-install flowprocessor.
ex.
tsm topology set-node-role -n node1,node2 -r all-jobs

5. Delete the backgrounder from step 2's node.
ex.
tsm topology set-process -n node3 -pr backgrounder -c 0

6. Pending changes apply.