the "permission denied" error on "/var/log/nginx/error.log" is expected and can be safely ignored. It is a warning from nginx that the compiled-in log file is not writable, but this only applies to the very beginning of the startup sequence before the DSS-generated configuration file is loaded.
You can check with
that all the DSS components started correctly. If that is not the case, further error details should be in the corresponding log file in dss_data/run
However you mention that no other log lines are in nginx.log, though, so most probably the nginx component could start correctly.
I would look for a network-level error then: firewall blocking this port on the local host? or a connectivity problem between browser and host?
Ways to dig into it would include:
- checking that the http service works locally with: "curl http://localhost:11000" on the DSS host
- checking the exact network error seen by the browser, maybe in its console, or by accessing the DSS URL from a command line tool eg curl on the user workstation
- using ssh port-forwarding on port 11000 from the user workstation to the DSS server to check whether it allows connection (bypassing any firewall)
Details on the above available on request, of course
Hope this helps