linux-kernel - Re: Announce: cancd 0.2.0 netconsole capture server

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Message-ID: <x49mx8vps2l.fsf@segfault.boston.devel.redhat.com>
Date:	Mon, 06 Feb 2012 16:31:14 -0500
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Jörn Engel <joern@...fs.org>
Cc:	linux-kernel@...r.kernel.org, Joel Becker <jlbec@...lplan.org>
Subject: Re: Announce: cancd 0.2.0 netconsole capture server

Jörn Engel <joern@...fs.org> writes:

> Quoting Documentation/networking/netconsole.txt:
> 	The remote host can run either 'netcat -u -l -p <port>',
> 	'nc -l -u <port>' or syslogd.
>
> Now, both of these options have their issues.  Netcat works fine, but
> only reasonably scales to 1.  Having to use a seperate port for every
> test machine, as well as a seperate netcat process that writes to a
> proper file becomes a bit of a nightmare by the time you approach
> three digits of machines.
>
> Syslogd would be great, if netconsole actually spoke syslog protocol.
> As it is netconsole speaks a protocol I would describe as "7bit ascii,
> no nonsense".  Syslog protocal is described in rfc5424, a 38-page
> document.  I think it is fair to say the two are incompatibel.  In
> case someone actually wants to see the full trainwreck, a quick search
> should come up with enough bug reports to scare your children into
> bed.
>
> Given that sad state of things, here is yet another alternative:
> http://git.kernel.org/?p=linux/kernel/git/joern/cancd.git

Hmm, the old netdump-server package that we used to ship in RHEL should
work too, I think, if you are interested in that approach.  That was
designed specifically to receive netconsole messages and netdumps from
multiple servers.  Google up netdump-server-0.7.16 and you should find
an srpm.  If there's interest in keeping that alive, I can put it up in
some public repo.

Cheers,
Jeff
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