I'm having some issues connecting to my application on port 8443. I'm getting either http status 504 or 503 continuously when this happens (every couple of days). The server is accessed through a load-balancer , but that's not the issue as I can't connect to either of the nodes directly on 8443.
When I telnet on the port I get 'connection timed-out'.
However I can connect on 8080 without any problems. After I restart the servers, it all works fine.
I don't believe this is caused by the server load as the number of concurrent clients is not very high.
I have to find the cause of this issue, any suggestions where I should start looking?