Kernel 2.6.22-rc4 netconsole & syslogd bug

Kernel 2.6.22-rc4 netconsole & syslogd bug

[Justin Piszcz]

1. I use netconsole on almost all of my machines.
2. When I reboot one of them, it sends the kernel messages to the console
    logging server.
3. However, whenever I reboot it spams the console and every xterm open
    with the following:

Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
p34 sdb3>

Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
p34 sda3>

Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
p34 sdb2>

Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
p34 sda2>

Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
p34 sdb1>

Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
p34 sda1>

I also tried:

# Send p34 messages to their own file.
@192.168.0.1        /var/log/p34.log

But no luck here either.

Do I need to be running some sort of special netconsole server and send to 
a different port to avoid this spam?

Justin.

Re: Kernel 2.6.22-rc4 netconsole & syslogd bug

[Matt Mackall]

On Wed, Jun 06, 2007 at 06:00:10PM -0400, Justin Piszcz wrote:
> 1. I use netconsole on almost all of my machines.
> 2. When I reboot one of them, it sends the kernel messages to the console
>    logging server.
> 3. However, whenever I reboot it spams the console and every xterm open
>    with the following:
> 
> Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
> p34 sdb3>
> 
> Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
> p34 sda3>
> 
> Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
> p34 sdb2>
> 
> Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
> p34 sda2>
> 
> Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
> p34 sdb1>
> 
> Message from syslogd@p34 at Wed Jun  6 17:43:10 2007 ...
> p34 sda1>
> 
> I also tried:
> 
> # Send p34 messages to their own file.
> @192.168.0.1        /var/log/p34.log

Your syslogd is probably getting confused by messages of the form
<foo> (and it rightly should be) and deciding they're maximal
priority. You probably have a separate clause somewhere that directs
all emergency messages to the console.

> Do I need to be running some sort of special netconsole server and send to 
> a different port to avoid this spam?

A lot of people simply run netcat.

-- 
Mathematics is the supreme nostalgia of our time.

Re: Kernel 2.6.22-rc4 netconsole & syslogd bug

[Simon Arlott]

On Thu, June 7, 2007 15:57, Matt Mackall wrote:
>> Do I need to be running some sort of special netconsole server and send to
>> a different port to avoid this spam?
>
> A lot of people simply run netcat.

There's cancd; syslogd isn't really appropriate because printks aren't always whole lines and each one is
sent as a separate packet.

-- 
Simon Arlott