Introducing vSphere Cloud Native Storage (CNS)

I’m delighted to be able to share with you that, coinciding with the release of vSphere 6.7 U3, VMware have also announced Cloud Native Storage (CNS). CNS builds on the legacy of the earlier vSphere Cloud Provider (VCP) for Kubernetes, and along with a new release of the Container Storage Interface (CSI) for vSphere and Cloud Provider Interface (CPI) for vSphere, CNS aims to improve container volume management and provide deep insight into how container applications running on top of vSphere infrastructure are consuming the underlying vSphere Storage. Now, there may be a lot of unfamiliar terminology in that opening…

vSAN 6.7 U1 Deep Dive book now available in Traditional Chinese

A very short post to highlight to my Asian readers that the vSAN 6.7 U1 Deep Dive book has now been translated into Traditional Chinese by Taiwanese company DrMaster. If you are interested in picking up a copy, we have been provided with the following links to web sites where you can purchase the book. This is opportune timing, as VMware has only just announced the newest release of vSAN, version 6.7 U3. Here are the links provided by DrMaster to online book stores in Asia where the book can be found. Tenlong Computer Books. This is the most famous…

WaveFront Collector Issues: Error in scraping containers

I was very pleased last week, as I managed to get a bunch of metrics sent from my Kubernetes cluster into Wavefront by chaining proxies together. I was successfully able to see my cluster’s Kube-state Metrics and Kubernetes Collector Metrics in Wavefront. However, on closer inspection, I noticed that a number of the built-in Wavefront Kubernetes dashboards were not being populated (Kubernetes Metrics and Kubernetes Metrics by Namespace), and then I found a number of errors in the Wavefront collector logs in my deployment. This post will describe what these errors were, and how I rectified them. There were 2…

Setting up Velero 1.0.0 to backup K8s on vSphere/PKS

I have written about Velero a few times on this blog, but I haven’t actually looked at how you would deploy the 1.0.0 version, even though it has been available since May 2019. Someone recently reached out to me for some guidance on how to deploy it, as there are a few subtle differences between previous versions. Therefore I decided to document step-by-step how to do it, but focusing on when your Kubernetes cluster is running on vSphere. I also highlight a gotcha when using Velero to backup applications that are running on Kubernetes deployed via Enterprise PKS, Pivotal Container…

Validating Kubernetes cluster conformance with Sonobuoy

Another product added to the VMware portfolio with the acquisition of Heptio is Sonobuoy. In a nutshell, Sonobuoy will validate the state of your Kubernetes cluster by running a suite of non-destructive tests against your cluster. As part of the end-to-end (e2e) tests that are run by Sonobuoy, there is a also a subset of conformance tests run as well. These include things like best practices and interoperability tests. This will ensure that your Kubernetes cluster (whether is an upstream version or a third-party packaged version) supports all of the necessary Kubernetes APIs. You can read more about conformance here.…

Kubernetes on vSphere 101 – Ingress

As I was researching content for the 101 series, I came across the concept of an Ingress. As I hadn’t come across it before, I wanted to do a little more research on what it actually did. It seems that in some ways, they achieve the same function as a Load Balancer in so far as they provide a mean of allowing external traffic into your cluster. But they are significantly different in how they do this. If we take the Load Balancer service type first, then for every service that is exposed via a Load Balancer, a unique external…

Kubernetes on vSphere 101 – Services

This will be last article in the 101 series, as I think I have covered off most of the introductory storage related items at this point. One object that came up time and again during the series was services. While not specifically a storage item, it is a fundamental building block of Kubernetes applications. In the 101 series, we came across a “headless” service with the Cassandra StatefulSet demo. This was where service type ClusterIP was set to None. When we started to look at ReadWriteMany volumes, we used NFS to demonstrate these volumes in action. In the first NFS…