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From: Lowell Gilbert <freebsd-lists@be-well.ilk.org>
To: Zaphod Beeblebrox <zbeeble@gmail.com>
Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: A jail notion.
References: <CACpH0Md72MVA6v5eify=FQxbQK-b79De8DRWJ0d_oCHxQ+CAjA@mail.gmail.com>
Date: Wed, 04 Sep 2019 18:30:26 -0400
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 (Zaphod Beeblebrox's message of "Wed, 4 Sep 2019 14:55:34 -0400")
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Zaphod Beeblebrox <zbeeble@gmail.com> writes:

> So... in general, I put jails in /jail.  I could, for instance, aggregate
> all unique userids and groupids into /etc/master.password and /etc/group by
> scanning /jail/*/etc/master.passwd, but then again, I could also run kerb.
> This could be further generalized by following the jail root configured in
> /etc/jail.conf.
>
> Now... I admit the fact that not all jails will have a password or group
> file, but looking at the fairly vast number of jails that I deploy, at
> least for me, they almost all have password and group files.
>
> What am I getting at?  Running top on the host ... many of the jail users
> end up as numbers.  It would be supremely helpful if top was jail-enabled
> in this manner.  In fact, although I routinely consider kerberos ... I
> don't think it would solve this problem.  What does the userid of a process
> look like under kerb?
>
> Anyways... food for thought.

A perl hacker could add that too sysutils/jtop...