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Netconsole: Difference between revisions

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= Netconsole with UDP =
= Netconsole with UDP =


* Configuring netconsole on the 2.6 kernel
To configure ''netconsole'' on the 2.6 kernel, complete the following steps.
** 1) add this line "netconsole=[src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]" in your boot command line.
** 2) bootup the netconsole machine.
** 3) 2.6 netconsole has been setup.
* Configure conman over netconsole, download conman from http://downloads.lustre.org/public/tools/conman/
** 1) edit your /etc/conman.conf, make sure you have set SERVER logdir,  SERVER logfile, SERVER port,
*** add following line in /etc/conman.conf
*** NETCONSOLE name="netconsole" dev="client1_ip_address:client1_port" (clientX is netconsole machine)
*** NETCONSOLE1 name="netconsole" dev="client2_ip_address:client2_port"
*** ............
** 2) start conmand server conmand
** 3) start conman netconsole with conman -d conmand_server_ip:conmand_server_port  NETCONSOLEx
** 4) Input sysrq command (& + S + sysrq_command) over conman netconsole, you will get the result in conman netconsole


1. Add the following line to your boot command:
netconsole=[src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]


2. Boot the netconsole machine.


There is a ''netconsole patch'' available that supports kernel level network logging over UDP. More information and a link to the kernel patches can be found at: [http://lwn.net/2001/0927/a/netconsole.php3].
To configure conman over netconsole, complete the following steps.
''Italic text''
1. Download ''conman'' from [http://downloads.lustre.org/public/tools/conman/ http://downloads.lustre.org/public/tools/conman/]


----
2. Edit ''/etc/conman.conf'' to set the ''SERVER logdir'', ''SERVER logfile'', and ''SERVER port''.
*'''LinuxDebugging'''
 
3. Add the following to ''/etc/conman.conf'', where ''clientX'' is the netconsole machine:
<pre>
NETCONSOLE name="netconsole" dev="client1_ip_address:client1_port"
NETCONSOLE1 name="netconsole" dev="client2_ip_address:client2_port"
............
</pre>
 
4.Start the ''conmand'' server by entering
conmand
 
5. Start the ''conman'' netconsole by entering:
conman -d conmand_server_ip:conmand_server_port NETCONSOLEx
 
4. Input sysrq command (& + S + sysrq_command) over  conman netconsole, you will get the result in conman netconsole. [[OK to replace with something like the following?]] To see results in the conman netconsole, enter the ''sysrq'' command <& + S _ sysrq>.
 
'''''Note:''''' A ''netconsole patch'' is available that supports kernel level network logging over UDP. More information and a link to the kernel patches can be found at: [http://lwn.net/2001/0927/a/netconsole.php3 http://lwn.net/2001/0927/a/netconsole.php3].

Revision as of 10:39, 10 November 2009

Netconsole with UDP

To configure netconsole on the 2.6 kernel, complete the following steps.

1. Add the following line to your boot command:

netconsole=[src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]

2. Boot the netconsole machine.

To configure conman over netconsole, complete the following steps. Italic text 1. Download conman from http://downloads.lustre.org/public/tools/conman/

2. Edit /etc/conman.conf to set the SERVER logdir, SERVER logfile, and SERVER port.

3. Add the following to /etc/conman.conf, where clientX is the netconsole machine:

NETCONSOLE name="netconsole" dev="client1_ip_address:client1_port"
NETCONSOLE1 name="netconsole" dev="client2_ip_address:client2_port"
............

4.Start the conmand server by entering

conmand

5. Start the conman netconsole by entering:

conman -d conmand_server_ip:conmand_server_port NETCONSOLEx

4. Input sysrq command (& + S + sysrq_command) over conman netconsole, you will get the result in conman netconsole. OK to replace with something like the following? To see results in the conman netconsole, enter the sysrq command <& + S _ sysrq>.

Note: A netconsole patch is available that supports kernel level network logging over UDP. More information and a link to the kernel patches can be found at: http://lwn.net/2001/0927/a/netconsole.php3.