Hi Jon, thanks for your quick replay!
No reverse proxy is used in my case.
Below the debug of Kibana session when I get the "unknown error":
Preview:
Response:
Timing:
I understand that the problem was TCP close connection after 120 seconds. But in Kibana I set the request timeout to 300 seconds:
elasticsearch.requestTimeout: 300000
I means is node.js to keep the response timeout too low for my case: is it possible update the value? If yes where is the parameter?
Thanks a lot for your time!