I had been working, off and on, on a how-to for building the daylight openflow controller under CentOS.  Most openflow docs and dev are done under ubuntu or debian, and while those are both fantastic alternatives, there are a huge number of folks that will want or need to use RHEL or CentOS. So, seeing as that is the case, having someone be mindful of that is important.  When I saw the write up by Jon Langemak, I scrapped my attempt at a how-to since his was so much better. If you’re not following Jon and reading his blog, you should be.  He’s a sharp guy with interesting things to say. That got me thinking about references and resources, and I decided that I would take a few of the things I had been working on on my home lab and make them available to the masses.  I’m a fan of importable base VMs.  So, seeing that I am working on testing openflow controllers, it made sense in my [constantly racing] mind to make the reference, base level VMs available.  If anyone is interested in the floodlight controller running under CentOS 6.3 built using the method documented here, a KVM image is now available to download from here.  It is, as stated, a KVM image, created by using the method I documented in this post a few months ago.    There is a readme file in the archive wth basic instructions.  You’ll need a basic understanding of KVM to make it work, or you can try to convert it to something else like vmware, XEN or virtualbox. I’ll be adding one of these soon for daylight as well.