Month: May 2017

Want to run a virtual network function (VNF) on Kubernetes? You’re in luck! This article comprises a small “do it yourself workshop” that I’ve put together for a talk that I’m giving at OPNFV Summit during the CNCF day co-located event. Today, we’re going to use vnf-asterisk which is an open source demo VNF we’ve created on the NFVPE devops squad to validate various infrastructure deployments and explore other topics such as container networking, scale, HA, and on and on. I’ve documented it end-to-end as much as possible so participants can go ahead and dissect it to see how I’ve componentized it, and as well as how you might start to scale it. The requirements are thick, but are based on previous labs on this blog. Ready for (virtual) dialtone in Kube, let’s go!

Continue reading VNFs in Kubernetes? Sure thing, here’s vnf-asterisk!

Helm is THE Kubernetes Package Manager. Think of it like a way to yum install your applications, but, in Kubernetes. You might ask, “Heck, a deployment will give me most of what I need. Why don’t I just create a pod spec?” The thing is that Helm will give you a way to template those specs, and give you a workflow for managing those templates by what it calls “charts”. Today we’ll go ahead and step through the process of installing Helm, installing a pre-built pod given an existing chart, and then we’ll make an existing chart of our own and deploy it – and we’ll change some template values so that it runs in a couple different ways. Ready? Anchors aweigh…

Continue reading Sailing the 7 seas with Kubernetes Helm

Time to bust out your kicktail skateboards Christian Slater fans, we’re about to gleam the kube, or… really, fire up our terminals and build Kubernetes from source. Then we’ll manually install what we built and configure it and get it running. Most of the time, you can just yum install or docker run the things you need, but, sometimes… That’s just not enough when you’re going to need some finer grain control. Today we’re going to look at exactly how to build Kubernetes from source, and then how to deploy a working Kubernetes given the pieces therein. I base this tutorial on using the official build instructions from the Kube docs to start. But, the reality is as much as it’s easy to say the full instructions are git clone and make release – that just won’t cut the mustard. We’ll need to do a couple ollies and pop-shove-its to really get it to go. Ready? Let’s roll…

Continue reading Gleaming the Kube – Building Kubernetes from source