V Fri, 24 Feb 2012 18:08:43 -0800
Grant <emailgr...@gmail.com> napsáno:

> >> I need to test a kernel config change on a remote system.  Is
> >> there a safe way to do this?  The fallback thing in grub has never
> >> worked for me.  When does that ever work?
> >
> >
> > You can press ESC in the Grub screen and it will take you to
> > text-only mode. There, you select an entry, press "e" and edit it.
> >  Press ENTER when you're finished, and then press "b" to boot your
> > modified entry.
> >
> > That way, you can boot whatever kernel you want if the current one
> > doesn't work.
> 
> I can't do that remotely though.  I'm probably asking for something
> that doesn't exist.
> 
> - Grant
> 

Don't do that if you don't have some tool like KVM, or other remote
management of the server. Or if it is available in the data center,
just call them and order this service for the time you need to do
updates.

This is why I don't use gentoo on servers any more, just because
I rather stay safe than sorry.

But if you really need to do that (and you don't have any chance to
get KVM attached), just create an virtual machine with backup of your
server and test that kernel there, and check that you have all the
modules you need on the server. But this is the last thing I would do.


Good luck,
Robert.
 

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