From: Eric Wong <normalperson@yhbt.net>
To: unicorn list <mongrel-unicorn@rubyforge.org>
Subject: Re: unicorn worker partially restarted when using USR2
Date: Sat, 7 May 2011 17:54:48 +0000 [thread overview]
Message-ID: <20110507175448.GA31876@dcvr.yhbt.net> (raw)
In-Reply-To: <BANLkTi=Fh0iSkUhWP_Hss-LRRe0_sGHUbA@mail.gmail.com>
Stone <stones.gao@gmail.com> wrote:
> In the deployment I did kill -s USR2 `cat unicorn_pid` to gracefully
> restart unicorn. But I noticed that unicorn workers were partially
> restarted when using USR2.
You need to send a SIGQUIT to the original master process, otherwise
both masters and all workers continue running. This allows you to test
the new deploy (combined with SIGWINCH).
The last section of http://unicorn.bogomips.org/SIGNALS.html
describes this process in detail.
> The following is how I did test:
>
> start unicorn in production environment:
>
> the action has the following code:
Ugh, don't you have something like "ps axf" that shows you a process
tree? It's much easier just to *see* the process tree.
--
Eric Wong
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prev parent reply other threads:[~2011-05-07 18:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-07 11:54 unicorn worker partially restarted when using USR2 Stone
2011-05-07 17:54 ` Eric Wong [this message]
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