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simonsobs-uk / data-centre

This tracks the issues in the baseline design of the SO:UK Data Centre at Blackett
https://souk-data-centre.readthedocs.io
BSD 3-Clause "New" or "Revised" License
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Intermittent Network Overloads and Connection Drops When Accessing Blackett from UoM #8

Closed ickc closed 7 months ago

ickc commented 1 year ago

According to conversations between @rwf14f, @shaikhhasib, this is a known problem, and a temporary fix is to connect to it from outside UoM.

Edit: symptom and background: UoM has its own firewall and Blackett while geographically located within UoM, has their own firewall outside UoM. Connections from within UoM to Blackett are mostly fine, but sometimes it will just disconnect and succeeding reconnection refused.

ickc commented 9 months ago

@shaikhhasib, have you experienced the same issue lately? Do you know if it was fixed already?

shaikhhasib commented 9 months ago

@ickc, its hasn't change, it break the connection

ickc commented 9 months ago

Thanks.

By the way, did @earosenberg experience this too? Is it a big problem?

earosenberg commented 9 months ago

I've had slow data transfer rates (~45 mins to transfer 1GB python tarball from my laptop by sftp) but not sure if this is the same problem

ickc commented 9 months ago

@earosenberg, sorry, this issue is not well documented. I changed the title and add a text:

symptom and background: UoM has its own firewall and Blackett while geographically located within UoM, has their own firewall outside UoM. Connections from within UoM to Blackett are mostly fine, but sometimes it will just disconnect and succeeding reconnection refused.

Regarding throughput from your laptop, I'll open a new issue tracking that.

ickc commented 7 months ago

From an internal conversation, it seems that an internal link is saturating so it is a "won't fix".