On Sat 25 Feb 2012 05:48:49 PM IST, Mick wrote: > On Saturday 25 Feb 2012 02:32:49 Pandu Poluan wrote: >> On Feb 25, 2012 9:14 AM, "Grant" <emailgr...@gmail.com> wrote: >>>>> 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 >> >> Situations like these that made me decide with great conviction to always >> deploy my servers virtualized, even if the box in question will only host a >> single VM. >> >> Now, if I lost my intelligence for a couple of seconds and somehow ended up >> with a VM that's no longer accessible remotely, I just connect to the >> virtual console. >> >> The flip side? Now I'm getting too daring/careless, and the uptime now >> drops below my (self-imposed) target of 99.99% :-P > > What do you do when you need to upgrade the host, rather than the guest? >
I think setting up a VM on the server using the new kernel should help test a new kernel? -- Nilesh Govindarajan http://nileshgr.com
