[CentOS] Persistent Kernel Parameters in GRUB

Tim Nelson tnelson at rockbochs.com
Mon May 14 20:07:31 UTC 2012


----- Original Message -----
> ----- Original Message -----
> > Am 14.05.2012 20:46, schrieb Tim Nelson:
> > > Greetings-
> > >
> > > I have a few custom kernel parameters being passed to a CentOS box
> > > via the /boot/grub/grub.conf file. However, if there is a kernel
> > > update, and grub.conf is regenerated, how do I ensure my custom
> > > parameters are:
> > >
> > > a. left in place on the older kernels
> > > b. added to the new kernel?
> >
> > what exactly is your problem?
> >
> > the params of the newest kernel in the grub-config is taken
> > by grubby since many years - this is a redhat OS not
> > ubuntu!
> 
> So, to confirm, any parameters specified in the grub.conf for the
> current kernel will be copied over to the new kernel entry? I do see
> an option to grubby, specifically '--copy-default' which appears to do
> the necessary work. This is called when the new kernel is installed
> (yum/rpm)?

As a follow up... I just tested this and can confirm the parameters are indeed copied from the existing entries to the new kernel entry.

Thanks for the info.

--Tim



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