From: Pai-Hung Chen <phc@zestcash.com>
To: mongrel-unicorn@rubyforge.org
Subject: How to automate the restarting of Unicorn?
Date: Fri, 7 Oct 2011 20:20:58 -0700 [thread overview]
Message-ID: <CA+rii7H2gNdoWipzrhbgTu0G4H+3c9pS-PqA1jO-Cn-uGSsHxQ@mail.gmail.com> (raw)
Hi,
I have a question about automating the restarting of Unicorn with the
following steps, and much appreciate your help.
Assumption: (i) "pid" is set to unicorn.pid in the config file; (ii) a
Unicorn process is already running.
(1) kill -USR2 `cat unicorn.pid` (via Capistrano deployment task for example)
(2) Inside the "before_exec" hook in the config file, do: kill -QUIT
`cat unicorn.pid.oldbin`
My question is: By the time the "before_exec" hook is executed, is it
guaranteed that unicorn.pid.oldbin ahas lready created (otherwise we
have a racing condition here)? Or is there a better way to achieve
what I want?
Please Cc me as I am not on the mailing list.
Please also let me know if there is a better place to ask this question.
Thanks,
Pai-Hung
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next reply other threads:[~2011-10-08 3:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-08 3:20 Pai-Hung Chen [this message]
2011-10-09 23:31 ` How to automate the restarting of Unicorn? Alex Sharp
2011-10-10 6:04 ` Devin Ben-Hur
2011-10-10 20:34 ` Pai-Hung Chen
2011-10-10 21:27 ` Eric Wong
2011-10-10 22:18 ` Pai-Hung Chen
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