Uptime monitoring, using Munin, on Linux
Since I didn't come across an existing plugin after a quick google, and nor is there one in the official Munin repository that works on my Debian installations, I thought I'd post my implementation. It's exceptionallysimple, however it might save someone 10 seconds of research and coding in the future.
#!/usr/bin/perl
if ($ARGV[0] and $ARGV[0] eq "config")
{
print "graph_args –base 1000 -l 0\n";
print "graph_title Uptime in days\n";
print "graph_category system\n";
print "graph_vlabel uptime\n";
print "uptime.
Xen, Vyatta, Happy New Year
New Years eve the extra bits of hardware I needed for my Xenbox arrived (cheapo motherboard for VMX (Intel VT-x in my case) and power supply). As you can imagine with a house full of people, and corresponding day of pain afterwards, it wasn't the best time to be faffing with setting it all up. However, a few days later and it's all there and working like a dream.
I have to say that I'm pleasantly surprised and also taken back by a few things.
Reviewing ‘Running Xen: A Hands-On Guide to the Art of Virtualization’
Like all books I was hoping for something that delivered a little bit more than the man pages and online docs. Sadly this wasn't really the case.
Now I'm not saying that ‘Running Xen’ is a bad book. It's not. It's just missing that “something more”, that “je ne sais quoi” (I cannot believe I've just typed that and not removed it). If you're going to somewhere without man pages or online docs, then it's an invaluable reference.
Farewell LUGRadio?
Given it's all over the forums and it's now the end of day after the release of the episode: “LUGRadio will be finishing after LUGRadio Live UK 2008” (so that's basically 2 remaining episodes, including LRL)!
There are various reasons for this, and if you're not already aware of them I'd suggest listening to S5E21yourself. To have a hovis moment, I discovered LUGRadio at the start of season 2, which culminated in LRL 2005.
Linux on Hyper-V
Unless you've been living in a hole for the past few days, or you're seriously anti-Windows or simply not into your virtualisation at all, you're probably aware that Hyper-V, the replacement for Virtual Server 2005, has gone “gold” (RTM).
There's all sorts of news on this, but little in the way of unix and unix-like related info on the web. Despite having 2 customers with it at work, I've not had the opportunity to try any of the unix-like systems on it either.
ZFS - Making file systems sexy again?
Ok, so maybe not again. After all there's not much you can get that happy about when it comes to filesystems these days - a lot of the really exciting stuff has been done so far.
Like Resier[3|4], ZFS is one I'd heard about, did some research on but never considered using at all. The fact that it currently only runs on Solaris or via FUSE under Linux (which in itself can be considered to be a benefit, as the filesystem is recoverable and separate from the kernel - performance supposedly sucks though), had kind of put me off a bit.
Converting a physical system to a Microsoft Virtual Server 2005 SP1 R2 virtual machine
Converting a physical machine to a virtual machine can be a bit of an arduous task under many virtualisation solutions, and the various Microsoft solutions are no exception. Microsoft have released the VS Migration Tool Kit, however this unfortunately requires ADS 1.0 to be deployed. In my instance this isn't suitable. However, what you should realise is that it's simply possible to make an image of the hard disk, restore it and then quickly wap Windows on top again, as the quickest hands-free fix to sort any BSOD or driver issues (if required).
Win an ASUS eeePC with LUGRadio
That's right, the kind guys at EfficientPC, via LUGRadio, are giving the listeners an opportunity to win an ASUS eeePC..In Pimp My LugRadio, the LugRadio Christmas competition, you can win an Asus EEE PC! Listen to the show to find out how! (54.34)Listen to season 5, episode 7for more details!
Be aware that LUGRadio is known for bad language and a very British sense of humour, so if either of these things offend you have been warned.