How to use Flickr favourites as your screensaver in OS X Yosemite, Mavericks and Mountain Lion

Mountain Lion was an improvement on Lion, which I had mixed feelings about when it was released. Unfortunately, however, Apple apparently decided that RSS is a dead technology (although it seems to be creeping back into Safari), and consequently the handy RSS screensavers were removed, which means there was no simple way of creating a screensaver out of one’s Flickr favourites in Mountain Lion, and this remains the case in Mavericks and Yosemite.

Having come up with an effective solution for how to get Flickr favourites as a screensaver in Mountain Lion which also works in Mavericks and Yosemite, I thought I’d share the method for the benefit of those who are not so used to fiddling with the deeper technological aspects of their Mac. I’ve gone into quite a lot of detail for those who are less technically-minded, but those of a more technical bent can just skip ahead accordingly.

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How to create a two-node CentOS 6 cluster with floating IP using CMAN and Pacemaker

Originally I was using Heartbeat to create two-node Linux clusters with floating IPs, but when Heartbeat stopped being developed I needed to figure out how to use Corosync and Pacemaker for this instead. Somewhat annoyingly, Linux HA stuff has changed yet again in CentOS 6.4, so now it’s necessary to use CMAN and Pacemaker instead.

This is quite a lot more in-depth than the simple configuration that was originally required for Heartbeat. Anyway, based on my recent experiences, here’s a very quick guide for if you find yourself in a similar situation. This works for me on CentOS 6.4 and higher, but it won’t work on earlier versions of CentOS.

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