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From: Eric Wong <e@80x24.org>
To: Michael Fischer <mfischer@zendesk.com>
Cc: unicorn-public <unicorn-public@bogomips.org>
Subject: Re: nginx reverse proxy getting ECONNRESET
Date: Tue, 24 Mar 2015 22:54:38 +0000	[thread overview]
Message-ID: <20150324225437.GA21975@dcvr.yhbt.net> (raw)
In-Reply-To: <CABHxtY7Sn5yaiR5a3gDk1G4XySE+UtfuqUTcOSdmwneXLD5rcg@mail.gmail.com>

Michael Fischer <mfischer@zendesk.com> wrote:
> We have an nginx 1.6.2 proxy in front of a Unicorn 4.8.3 server that
> is frequently reporting the following error:
> 2015/03/24 01:46:01 [error] 11217#0: *872231 readv() failed (104:
> Connection reset by peer) while reading upstream
> The interesting things are:
> 1) The upstream is a Unix domain socket (to which Unicorn is bound)
> 2) Unicorn isn't reporting that a child died in the error log (and I
> verified their lifetimes with ps(1))
> Any hints as to what we should look for?

What changed recently with your setup?

Which OS/kernel version + vendor version?

Since you've been around a while, I take it this is only a recent issue?

Can you setup a test instance on a different nginx port/unicorn socket
and with a config.ru such as:

------------------------- 8< ----------------------
run(lambda do |env|
  $stderr.write("#$$ starting at #{Time.now}\n")
  # be sure to configure your unicorn timeout
  # should not return, wait for unicorn to kill

And hitting nginx with a single test request to reproduce the issue.

And see if it happens on the same/different hosts where you notice the

  reply	other threads:[~2015-03-24 22:54 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-24 22:43 nginx reverse proxy getting ECONNRESET Michael Fischer
2015-03-24 22:54 ` Eric Wong [this message]
2015-03-24 22:59   ` Eric Wong
2015-03-24 23:04     ` Michael Fischer
2015-03-24 23:23       ` Eric Wong
2015-03-24 23:29         ` Michael Fischer
2015-03-24 23:46           ` Eric Wong
2015-03-24 23:55             ` Eric Wong
2015-03-25  9:41               ` Michael Fischer
2015-03-25 10:12                 ` Eric Wong
2015-03-25  9:48             ` Michael Fischer
2015-03-24 23:02   ` Michael Fischer
  -- strict thread matches above, loose matches on Subject: below --
2015-04-08 16:22 Gabe Martin-Dempesy

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