On Feb 25, 2012 7:22 PM, "Mick" <michaelkintz...@gmail.com> 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? >
Since I'm using XenServer, upgrading the host is a well-defined procedure: Either I push the update using XenCenter, or I visit the servers. Usually, I just push minor updates using XenCenter. Rgds,
