Ksplice applies kernel patches on-the-fly – no reboot required — in a fraction of a second. Here’s a hands-on guide to performing painless system updates. Learn how to patch a live kernel and give reboots the boot.
Live Kernel Patches with Ksplice
2010-08-06 General Development 7 Comments
The authors of Ksplice provide a client application customized for your distro. You can keep your kernel up to date for a nominal fee of less than USD$5 per system per month.
Hmmm. A reboot is an awful lot cheaper.
We reboot our servers once a month or so anyay so what is this going to give us beyond what we already have?
Why do we do this? Well, doing this, we test our DR procedures every month. We fail over from one DataCentre to another. One day later we have a patch/upgrade window. All nice and controlled.
Don’t get me wrong, Ksplice is a nice idea and there may be times when I would want to patch this way.
However in the world of FOSS I am sure that many will see the charges for a client to manage it as nothing more than a Red rag to a bull. This is not a support charge but a usage charge. These are two very different things IMHO.
60+ Servers @5$/month=>$3600 per year just to use something that we don’t really need.
I’m sure that not far away, there will be a ‘free to use’ client coming along. Then we might look at it.