Issue communicating with Dremio

Hello!

We have Dremio running on a server and this error always comes up in Dremio’s UI:

There was an issue communicating with Dremio.
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Your Internet connection may be offline, or WebSockets to Dremio are being blocked.

It does not seem to affect the functioning of Dremio (one can still log in, run queries, save views, etc.), however it would be nice to understand where does it come from and how to fix it.

Thank you!

There may be a networking issue with how you/users are connecting to Dremio. I would first check server.log and server.out to see if there are any errors. If not, it could possibly be bad routing to the server(s)? Especially since you mention everything is functioning normally.

This issue still persist. Dose anyone have a solution?

We are using Dremio behind an apache revers proxy, which directs the traffic from a subdomain to the 9047 port. The SSL certificate is issued by let’s encrypt. Dremio loads, but there is en error.

Your Internet connection may be offline, or WebSockets to Dremio are being blocked.

This also affects functionality, the tables do not load. If I switch over to http protocoll and directly to port 80 (instead of redirecting) everything works fine.