upstream timed out

Reddirt nginx-forum at
Thu Jul 11 16:43:06 UTC 2013

I am a newbie.

I'm running Ubuntu, Nginx and 5 Thin servers - that serve up a Ruby on Rails

The system hangs about once a day.

The Nginx log has this error:
2013/07/11 10:06:46 [error] 21344#0: *201 upstream timed out (110:
Connection timed out) while reading response header from upstream, client:, server: ,


2013/07/11 10:05:11 [warn] 21345#0: *225 an upstream response is buffered to
a temporary file /opt/bitnami/nginx/tmp/proxy/2/00/0000000002 while reading
upstream, client:, server: , request: "GET
/assets/application-b7b1695e978934a03ade49d20bf63139.js HTTP/1.1",

Is this telling me there is a problem with Thin or Ruby on Rails?
I'm not seeing error in logs for those systems.


Posted at Nginx Forum:,240762,240762#msg-240762

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