Re: Struggling with logrotate and unicorn

[Eric Wong <normalperson@yhbt.net>]

Emmanuel Gomez <emmanuel.gomez@gmail.com> wrote:
> On Apr 12, 2011, at 11:59 AM, Eric Wong wrote:
> > I'll make that more robust and release 3.6.0 sometime this week with
> > (hopefully) a few other minor improvements.
> 
> Great. This is apparently an infrequent circumstance (uncommon
> configuration?), but there will be a next person who does this (or
> comparable silliness).

Yes, I think most people still deploy and start as non-root
(Capistrano/Vlad).  But I also distribute init scripts and those
are usually run as root :x

> >> Thanks for your reply, I'm off to comment on the GitHub blog post
> >> to try to warn others to use Unicorn::Worker#user instead of the
> >> example code in after_fork.
> > 
> > Thanks, that seems to be a general problem with people relying on
> > blog/mailing list posts instead of consistently updated
> > documentation.
> 
> Indeed, but I read most of the unicorn docs, and
> examples/unicorn.conf.rb in 3.3.1 doesn't mention
> Unicorn::Worker#user, so I remained unaware until I read through
> worker.rb.

Actually the (usually) user-visible one should be
Unicorn::Configurator#user which should be in the top-level.
Worker#user is just the internal call.

> Hey, I can help here. Here's a patch:

Perhaps this is better? I added a blurb discouraging people from
running as root in the first place.  You'll still get credit :)

>From c4d3cd7d7b32ed133e25e3740c8e7a3493592eec Mon Sep 17 00:00:00 2001
From: Emmanuel Gomez <emmanuel.gomez@gmail.com>
Date: Tue, 12 Apr 2011 15:36:36 -0700
Subject: [PATCH] Document "user" directive in example unicorn conf

---
 examples/unicorn.conf.rb |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/examples/unicorn.conf.rb b/examples/unicorn.conf.rb
index 28a9e65..61f0b4b 100644
--- a/examples/unicorn.conf.rb
+++ b/examples/unicorn.conf.rb
@@ -12,6 +12,13 @@
 # more will usually help for _short_ waits on databases/caches.
 worker_processes 4
 
+# Since Unicorn is never exposed to outside clients, it does not need to
+# run on the standard HTTP port (80), there is no reason to start Unicorn
+# as root unless it's from system init scripts.
+# If running the master process as root and the workers as an unprivileged
+# user, do this to switch euid/egid in the workers (also chowns logs):
+# user "unprivileged_user", "unprivileged_group"
+
 # Help ensure your application will always spawn in the symlinked
 # "current" directory that Capistrano sets up.
 working_directory "/path/to/app/current" # available in 0.94.0+
-- 
Eric Wong
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