From: | Stephen Frost <sfrost(at)snowman(dot)net> |
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To: | Bruce Momjian <bruce(at)momjian(dot)us> |
Cc: | Noah Misch <noah(at)leadboat(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Robert Haas <robertmhaas(at)gmail(dot)com>, David Steele <david(at)pgmasters(dot)net>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Gavin Flower <GavinFlower(at)archidevsys(dot)co(dot)nz>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Adam Brightwell <adam(dot)brightwell(at)crunchydatasolutions(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Additional role attributes && superuser review |
Date: | 2016-01-17 18:49:19 |
Message-ID: | 20160117184918.GE3685@tamriel.snowman.net |
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Lists: | pgsql-hackers |
* Bruce Momjian (bruce(at)momjian(dot)us) wrote:
> On Mon, Jan 4, 2016 at 12:55:16PM -0500, Stephen Frost wrote:
> > I'd like to be able to include, in both of those, a simple set of
> > instructions for granting the necessary rights to the user who is
> > running those processes. A set of rights which an administrator can go
> > look up and easily read and understand the result of those grants. For
> > example:
> >
> ...
> > pgbackrest:
> >
> > To run pgbackrest as a non-superuser and not the 'postgres' system
> > user, grant the pg_backup role to the backrest user and ensure the
> > backrest system user has read access to the database files (eg: by
> > having the system user be a member of the 'postgres' group):
> ------
>
> Just to clarify, the 'postgres' OS user group cannot read the data
> directory, e.g.
>
> drwx------ 19 postgres staff 4096 Jan 17 12:19 data/
> ^^^group
>
> I assume we don't want to change that.
This is going to be distribution dependent, unfortunately. On
Debian-based distributions, the group is 'postgres' and it'd be
perfectly reasonable to allow that group to read the data directory.
I don't recall offhand if that means we'd have to make changes to allow
that, but, for my 2c, I don't see why we wouldn't allow it to be an
option.
Thanks!
Stephen
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