From owner-freebsd-jail@FreeBSD.ORG  Fri Oct 24 13:30:57 2014
Return-Path: <owner-freebsd-jail@FreeBSD.ORG>
Delivered-To: freebsd-jail@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 2DAC711F
 for <freebsd-jail@freebsd.org>; Fri, 24 Oct 2014 13:30:57 +0000 (UTC)
Received: from home.opsec.eu (home.opsec.eu [IPv6:2001:14f8:200::1])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id E1D752DF
 for <freebsd-jail@freebsd.org>; Fri, 24 Oct 2014 13:30:56 +0000 (UTC)
Received: from pi by home.opsec.eu with local (Exim 4.82 (FreeBSD))
 (envelope-from <lists@opsec.eu>)
 id 1XhexD-000Mu5-BG; Fri, 24 Oct 2014 15:30:55 +0200
Date: Fri, 24 Oct 2014 15:30:55 +0200
From: Kurt Jaeger <lists@opsec.eu>
To: Richard Manyanza <1.liseki@gmail.com>
Subject: Re: ttys in jail
Message-ID: <20141024133055.GE66862@home.opsec.eu>
References: <CALqRJvnjFj7cz_Ve5gn3Qnpw6v=7YRUskuZm7nuciAYirO84pg@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CALqRJvnjFj7cz_Ve5gn3Qnpw6v=7YRUskuZm7nuciAYirO84pg@mail.gmail.com>
Cc: freebsd-jail@freebsd.org
X-BeenThere: freebsd-jail@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: "Discussion about FreeBSD jail\(8\)" <freebsd-jail.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-jail>,
 <mailto:freebsd-jail-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-jail/>
List-Post: <mailto:freebsd-jail@freebsd.org>
List-Help: <mailto:freebsd-jail-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-jail>,
 <mailto:freebsd-jail-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Oct 2014 13:30:57 -0000

Hi!

> In a non-jail FreeBSD instance I have a service I want supervised as an
> entry in /etc/ttys so whenever it dies it gets restarted.

This is a feature of the init process (man init).

In a jail you do not have an proper 'init' process, so this will not work.

> I am trying to do
> the same in a jail but after adding an entry to /etc/ttys and running init
> q, the service is not picked up.
> 
> I am naive on the implementation details of jails but is what I am trying
> to do possible? If so is it then a matter of appropriate settings?

It needs a different approach, for example have a look at

/usr/ports/sysutils/daemontools

-- 
pi@opsec.eu            +49 171 3101372                         6 years to go !