WARNING: This is the _old_ Lustre wiki, and it is in the process of being retired. The information found here is all likely to be out of date. Please search the new wiki for more up to date information.

Netconsole: Difference between revisions

From Obsolete Lustre Wiki
Jump to navigationJump to search
No edit summary
No edit summary
Line 35: Line 35:
To configure ''conman'' over ''netconsole'', complete the following steps.
To configure ''conman'' over ''netconsole'', complete the following steps.


1. Download ''conman'' from [http://downloads.lustre.org/public/tools/conman/ http://downloads.lustre.org/public/tools/conman/] '''[[This is dated 2006. Is there a more recent location?]]'''
1. Download ''conman'' from [http://home.gna.org/conman/ http://home.gna.org/conman/]


2. Edit ''/etc/conman.conf'' to set the ''SERVER logdir'', ''SERVER logfile'', and ''SERVER port''.
2. Edit ''/etc/conman.conf'' to set the ''SERVER logdir'', ''SERVER logfile'', and ''SERVER port''.
Line 52: Line 52:
  conman -d conmand_server_ip:conmand_server_port NETCONSOLEx
  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 this with the following?]]''' To see results in the conman netconsole, enter the ''sysrq'' command <& + S _ sysrq>.
6. To see results in the ''conman'' netconsole, enter the ''sysrq'' command inside the ''conman'' console (enter "&", then "S", and then the ''sysrq'' command).


'''''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] '''[[This is dated 2001. Should we point to a more recent reference?]]'''.
'''''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 10:00, 19 November 2009

Netconsole supports kernel-level network logging over UDP. A system request (SysRq) allows users to collect relevant data through netconsole.

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]

Command options:

src-port Source for UDP packets (defaults to 6665)
src-ip Source IP to use (interface address)
dev Network interface (eth0)
tgt-port Port for logging agent (6666)
tgt-ip IP address for logging agent
tgt-macaddr Ethernet MAC address for logging agent (broadcast)

Examples: 

linux netconsole=4444[AT]10.0.0.1/eth1,9353@10.0.0[DOT]2/12:34:56:78:9a:bc

or 

insmod netconsole netconsole=[AT]/,@10.0.0[DOT]2/

2. Boot the netconsole machine.


To configure conman over netconsole, complete the following steps.

1. Download conman from http://home.gna.org/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

6. To see results in the conman netconsole, enter the sysrq command inside the conman console (enter "&", then "S", and then the sysrq command).

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.

Retrieved from "http://wiki.old.lustre.org/index.php?title=Netconsole&oldid=8470"