[Buildbot] #3249: nginx HTTP server reports 504: buildbot hangs reproducibly when using TCP interface

[Buildbot trac]

#3249: nginx HTTP server reports 504: buildbot hangs reproducibly when using TCP
interface
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Reporter:  vlovich  |       Owner:
    Type:  defect   |      Status:  new
Priority:  major    |   Milestone:  undecided
 Version:  0.8.10   |  Resolution:
Keywords:           |
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Comment (by vlovich):

 It's a pretty big CFG & deriving a minimal CFG is very
 difficult/impractical.  There's also no guarantee that it's not an issue
 with the state of the buildbot since it's been up for a few months with
 fairly heavy usage; there were no problems at first.

 Changing the http_server port from TCP to Unix seems to have fixed the
 issue.

 If you give me next steps (e.g. log lines to instrument in buildbot) I can
 try to dig into this further in a parallel setup I'll configure for this
 test.

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Ticket URL: <http://trac.buildbot.net/ticket/3249#comment:4>
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