Date: Sat, 10 Apr 2004 11:30:17 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Grant Peel <gpeel@thenetnow.com> Cc: freebsd-questions@freebsd.org Subject: Re: Remote Single User Mode. Message-ID: <20040410103017.GA64988@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <006f01c41ee3$1e9160f0$6501a8c0@grant> References: <006f01c41ee3$1e9160f0$6501a8c0@grant>
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On Sat, Apr 10, 2004 at 06:03:48AM -0400, Grant Peel wrote:
> I have 4 servers in Toronto (I live in London, about 120 miles south). Mo=
st admin I can do remotely of course, but I was wondering, if there exists =
a software/hardware solution that might actually allow one to reboot any on=
e of the machines remotely and alllow access in single user mode. Obviously=
, that machine would not be accessable via the normal netwrk method, but ag=
ain, is there a KVM - software that would allow local access in single user=
mode VIA a network connection to one of the other servers, or the KVM dire=
ctly?
The device you're looking for is a 'Console Server'. There are any
number of such devices available off the shelf -- Lantronix makes some
reasonably good ones.
However, if you don't want to spend money, you can daisy-chain your
FreeBSD boxes together using null-modem cables between the serial
ports and use tip(1) as a terminal emulator. In any case you need to
make your servers use a serial port as the system console:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole=
-setup.html
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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