[96411] in RedHat Linux List
Re: Virtualising a Linux system
daemon@ATHENA.MIT.EDU (Simon J Mudd)
Mon Oct 26 23:17:23 1998
To: redhat-list@redhat.com
From: Simon J Mudd <sjmudd@bitmailer.net>
Date: 26 Oct 1998 19:15:12 +0100
In-Reply-To: "Simon Garner"'s message of 26 Oct 1998 18:02:31 +0100
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
"Simon Garner" <sgarner@expio.co.nz> writes:
> a) how can I stop users from seeing other users' processes with
> the 'ps aux' command? They must still be able to see their own
> processes, however.
I don't know if there is a proper way of doing this.
A quick hack is to do (as root)
# chmod o=x /proc
which effectively stops you looking at the proc filesystem. Other
utilities will probably break though, and thus this may not be a good
idea. I don't know if any tools are available which allow you to only
see your processes.
> b) how can I make it so that when a user logs in with their shell
> account and runs a command like 'uname -n' (which prints the
> current hostname), it prints their own domain name? E.g. if we're
> hosting their domain name "foo.com", I want them to see "foo.com"
> as their hostname in the shell.
The hostname doesn't have anything to do with the interface name which
they login on. I'd setup the hostname to virtual.foo.com.
If you want to really virtualise a system you are going to have to
severely limit the binaries that the client has access to so that they
can't get out of the "virtual machine". This would leave a very basic
machine and with that they probably wouldn't want to login!
Simon
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