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Re: separating PG binaries into a ro mounted partition

From: Phillip Smith <phillip(dot)smith(at)weatherbeeta(dot)com(dot)au>
To: Albretch Mueller <lbrtchx(at)gmail(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: separating PG binaries into a ro mounted partition
Date: 2007-12-30 05:41:57
Message-ID: 1198993317.5591.19.camel@cassandra-desktop (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
What are you trying to acheive by making the binaries read-only?

All the config files reside in the data directory so there shoudl be a
problem making /usr/local/postgres/bin (or whatever you choose to
install the binaries) to be a read-only mounted partition. The other
option (which is far easier) would be to set the binaries immutable. As
root, run this:
    chattr +i /use/local/postgres/bin/*

That way only root can remove the immutable flag so they can be changed
- if it's a security issue behind your desire to do this then it doesn't
matter that root can do that versus your suggestion as root would be
able to just remount the partition rw:
    mount -o remount,rw /usr/local/postgres

If you can advise why you want them to be read-only then we can make
better suggestions.


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