Notebook Disconnected

[Dan_Brumm]

I keep receiving Notebook Disconnected error messages while working in my Notebook.  Any idea what would be causing this? 

Enterprise 11.1: Notebook Server is Ubuntu, 

[FraserHand]

Hi Dan,

I'm getting this a lot too with a fresh 11.3 install - if you get to the bottom of it I'd be keen to know what you find.

Thanks!

[Nicole_Ueberschär]

Having the same issue with an Azure deployment (11.3) 😞

[Dan_Brumm]

I have been digging into this for a while now.  The alert windows pops every 100 seconds. It looks like this is a websocket timeout setting on our proxy server. We are looking into increasing that timeout. 

[Dan_Brumm]

We finally fixed this issue.  We had a Cloudflare engineer adjust our proxy_read_timeout setting from 100 seconds to 900 seconds.  That gives us at least 15 minutes before a timeout alert.