a quick question abt Kernel option

kool_kid · 08-17-2007, 09:28 AM

im trying to configure load balance for my linux box i want to check this entry of kernel

CONFIG_IP_ROUTE_MULTIPATH

i want to check whether this entry is "Y" or "N", currently am using 2.6 kernel

titopoquito · 08-17-2007, 06:41 PM

I hope that's what you are really asking for: If you have the source of your kernel installed you can do a simple search on your kernels .config file:

Code:

grep CONFIG_IP_ROUTE_MULTIPATH /usr/src/linux/.config

kool_kid · 08-21-2007, 11:57 AM

k dont have any folder with name linux in /usr/src am running centos 4.5 kernel that came with the os i.e 2.6.9-55.EL

titopoquito · 08-21-2007, 12:26 PM

If it's not named "linux", but "linux-2.6.9..." it's okay. Else you have to install the kernel source with help of the package manager of your choice (sorry, don't know what choices there are exactly on CentOS, I think "yum" is the one). The package should IMHO be named "kernel-source", so that would mean issuing "yum install kernel-source", but please check that in your CentOS manual.

syg00 · 08-21-2007, 03:46 PM

Well you only need to find the config to do the check. Probably there is a copy in /boot; have a look for something along the lines of conf*
Just grep that - personally I always use "-i"

Else check if /proc/config.gz exists - if yes, use zgrep on that.

Of course if you want to change anything you'll need the full source tree.