Issue
Gateway Service does not start and Tableau Server is degraded."tsm status -v" output includes the following:
Status: DEGRADED
'Tableau Server Gateway 0' is in an error state.
Check the startup.log in httpd for the following (pid number will be different):
httpd (pid <number>) already running
Although the gateway is isn't running, there is an existing httpd.pid in one of the following locations.
Linux: Look for a file httpd.pid in /var/opt/tableau/tableau_server/data/tabsvc/logs/httpd/
Windows: Look for a file httpd.pid in C:\ProgramData\Tableau\Tableau Server\data\tabsvc\logs\httpd