monitoring serial consoles (was Re: erorrs from spec_getpages)
dan at langille.org
Sat Oct 18 08:57:06 PDT 2003
Moving this thread over to -questions, please don't include
freebsd-stable at freebsd.org in the reply
On 18 Oct 2003 at 19:39, Dmitry Morozovsky wrote:
> On Sat, 18 Oct 2003, Dan Langille wrote:
> DL> > Well I was in impression you've swapped out the disk, not cable, hence my
> DL> > assumption. Sure it may be wrong cable; however, I suppose at least some ATA
> DL> > errors should be logged somewhere before spec_getpages...
> DL> They may have been, but they were not in /var/log/messages. If they
> DL> were on the console, they were scrolled off the top. I couldn't
> DL> scroll up because the keyboard hadn't been attached at boot, and I
> DL> had not modified the kernel to allow for that situation.
> That's why I always try to set up logged serial console for any machine with
> more than marginal importance. BTW, comms/conserver-com port is of great use
> for this purpose!
I have an 8 port serial Boca card here, which I have yet to get
running. How does comms/conserver-com work? I couldn't determine
that from the FAQ. Does it need any hardware? How does it monitor
the serial console? Do you connect two boxes together via their
serial ports? Box A reports on Box B, and vice versa?
Or does it just monitor the serial console and report back to a
> I assumed here that usually you have more than one machine per physical
> location; otherwise, I'd set up remote logging, preferrably to two different
> machines via two different interfaces, but such ideal network design is
> *rarely* reqchable ;-)
I have one location which has only one box. That box and the
bandwidth is kindly donated by BCHosting.com, and hosts
freebsddiary.org, freshports.org, etc. It does about 45GB a month
(at last check). I'd like to have a serial console there. But if it
could the console remotely, that would be good.
Dan Langille : http://www.langille.org/
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