06 September, 2010

Seamless upgrading

I heard of Ksplice a while ago, when it was still kind of beta-stage software. Recently I became aware that the version-number (currently: v0.9.9) is nearing a release-candidate, at which point most Linux-software are rock-solid stable.

The stability was further reimbursed by the fact that Canonical Inc. had included ksplice in the ubuntu repositories (aptitude, apt-get, etc.). Yes, I'm aware ubuntu is bleeding edge, but everything released by Canonical has been thoroughly tested and benchmarked to be as stable as possible if vanilla-configured (the ubuntu-way of course :p).

Ksplice is a piece of loadable kernel module-code (wiki: LKM) that makes it possible to patch a running Linux kernel in real-time(!), reducing the need to reboot to as little as possible (usually during major distribution updates/upgrades, which occur about 1-3 times a year).

So, I decided it was time to test it, I've been severely tired of rebooting everything all the time, and lastly notifying everybody that I'm rebooting one thing or another. *SIGH*

Now (as the picture shows) I'm using ksplice on my netbook (Ubuntu Netbook Edition) AND my Linux-server. No more hourly downtime.

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