Project

General

Profile

Bug #11963

502 Proxy Error

Added by Vito Di Benedetto almost 4 years ago. Updated over 2 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Target version:
Start date:
03/15/2016
Due date:
% Done:

100%

Estimated time:
First Occurred:
Scope:
Internal
Experiment:
-
Stakeholders:
Duration:

Description

Accessing development POMS application on fermicloud045, occasionally I see this error message:

The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /poms/campaign_sheet.

Reason: Error reading from remote server

Apache/2.2.15 (Scientific Linux) Server at fermicloud045.fnal.gov Port 443

For this specific case I tried to access the spreadsheet of the NOvA Probe Jobs campaign, the link is:
https://fermicloud045.fnal.gov/poms/campaign_sheet?campaign_id=18&tmax=

Please, can you have a look at this?

Thanks,
Vito

History

#1 Updated by Marc Mengel over 2 years ago

  • Target version set to v2_1_1

#2 Updated by Marc Mengel over 2 years ago

So we have two items in place in development to address this:

  1. caching/sharing on expensive requests with the dogpile.cache package
  2. turning up the listen queue to 256 (which also requires a kernel tune up)

This seems to reduce this significantly in development; possilby correcting it entirely.

I have a ticket in for the kernel tuning in production. RITM0563826

#3 Updated by Marc Mengel over 2 years ago

  • Status changed from New to Work in progress
  • Assignee set to Marc Mengel
  • % Done changed from 0 to 90

#5 Updated by Marc Mengel over 2 years ago

  • % Done changed from 90 to 100

#6 Updated by Marc Mengel over 2 years ago

  • Status changed from Work in progress to Closed


Also available in: Atom PDF