Date: Sat, 8 May 2004 16:54:24 -0400 (EDT) From: Robert Watson <rwatson@freebsd.org> To: Rob <stopspam@users.sourceforge.net> Cc: Bruce Hunter <bhunter@solisix.com> Subject: Re: Connecting to a Headless machine, after install Message-ID: <Pine.NEB.3.96L.1040508165202.27309J-100000@fledge.watson.org> In-Reply-To: <409B40EC.3080900@users.sourceforge.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 7 May 2004, Rob wrote:
> Bruce Hunter wrote:
> > I have setup a headless machine via a null modem cable. Instalation went
> > fine. The only problem now, is connecting to the machine after the
> > install. When I #cu -l /dev/cuaao/
> > I see the boot process, but it gets to the date prompt but doesn't show
> > the login:
> > i did install ssh, but won't let me login with the password I set for
> > root. Any other methods for connecting? This system is connected in my
> > local network, with a firewall protecting my systems.
> > - i am not running xserver on this system
...
> Funny, that I'm struggling with opposite problem: I do not get the
> boot messages over the serial cable, but do get the login prompt,
> which I do not understand :(.
>
> For the login prompt, I have following in /etc/ttys on the headless PC:
>
> ttyd0 "/usr/libexec/getty std.9600" unknown on secure
>
> but be sure the serial port is enabled in the BIOS, and you have
> serial port support compiled into your kernel.
> Your cu command should then work, I suppose.
You both have half of the solution, apparently, just different halves :-).
To configure my boxes for serial console operation, I do two things:
(1) Enable the ttyd0 entry in /etc/ttys by changing "off" to "on"
(2) Add the following line to /boot/loader.conf:
console="comconsole"
This one can be done in a couple of ways, including flags in
boot.config for the first stage loader.
The first action above tells init to launch getty+login on the serial
port. The second action above tells the kernel to direct /dev/console and
low level console output to the serial port. Note that nothing prohibits
you from leaving ttyv0 turned on when running with a serial console so you
could still log in on the VGA/keyboard console if you wanted to. There
are also some options in conscontrol(8) to send output to multiple console
devices, but there are some limitations to multiple console operation.
Robert N M Watson FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org Senior Research Scientist, McAfee Research
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.NEB.3.96L.1040508165202.27309J-100000>