A first look at vSphere VM Service

In this post, we will take a look at a brand new service that is now available in vSphere with Tanzu, called the vSphere VM Service. This new services enables developers to create virtual machines on vSphere Infrastructure via Kubernetes YAML manifests, just like they would create Tanzu Kubernetes clusters via the TKG service, or PodVMs via the Pod service, both of which are already available in vSphere with Tanzu. Since we feel that many applications will be made up of both containers and VMs, this is the first step in enabling developers to create these multi-faceted applications via the…

CSI Topology – Configuration How-To

In this post, we will look at another feature of the vSphere CSI driver that enables the placement of Kubernetes objects on different vSphere environments using a combination of vSphere Tags and a feature of the CSI driver called topology or failure domains. To achieve this, some additional entries must be added to the vSphere CSI driver configuration file. The CSI driver discovers each Kubernetes node/virtual machine topology, and through the kubelet, adds them as labels to the nodes. Please note that at the time of writing, the volume topology and availability zone feature was still in beta with vSphere…

vSphere CSI v2.2 – Online Volume Expansion

The vSphere CSI driver version 2.2 has just released. One of the features I was looking forward to in this release is the inclusion of Online Volume Expansion. While volume expansion was in earlier releases, it was always an offline operation. In other words, you have to detach the volume from the pod, grow it, and then attach it back when the expand operation completed. In this version, there is no need to remove the Pod. In this short post, I’ll show a quick demonstration of how it is done. Requirements Note: This feature requires vSphere 7.0 Update 2 (U2).…

VCP to vSphere CSI Migration in Kubernetes

When VMware first introduced support for Kubernetes, our first storage driver was the VCP, the in-tree vSphere Cloud Provider. Some might remember that this driver was referred to as Project Hatchway back in the day. This in-tree driver allows Kubernetes to consume vSphere storage for persistent volumes. One of draw-backs to the in-tree driver approach was that every storage vendor had to include their own driver in each Kubernetes distribution, which ballooned the core Kubernetes code and made maintenance difficult. Another drawback of this approach was that vendors typically had to wait for a new version of Kubernetes to release…

Using a Kubernetes Operator to query vSphere Resources

As many regular readers will be aware, I’ve spent a bit of time in the past looking at how vSphere resources are consumed by Kubernetes objects, when Kubernetes is deployed as a set of virtual machines on top of vSphere infrastructure. While much of this is visible in the vSphere client, I’m focused on how to see this vSphere resource consumption from within Kubernetes. If I am working in Kubernetes, I’d rather not context switch out to the vSphere client just to see how much storage is left on a datastore or how much CPU and Memory is left on…

Creating developer users and namespaces (scripted) in TKG “Guest” Clusters

I’ve spent a lot of time recently on creating and building out vSphere with Tanzu environment, with the goal of deploying a Tanzu Kubernetes “guest” cluster. I frequently used the kubectl-vsphere command to logout of the Supervisor namespace context and login to the Guest cluster context. This allowed me to start deploying stateful and stateful apps in my Tanzu Kubernetes Guest cluster. I thought no more about this step until a recent conversation with my colleague Frank Denneman. He queried whether or not Kubernetes developers would actually have vSphere privileges to do this. It was a great question which led…

Virtually Speaking Podcast Episode #174: vSphere with Tanzu

I’m sure most readers are now aware that we now have 2 versions of what was initially called “Project Pacific” at VMworld 2019. Our initial release with vSphere 7.0 (vSphere with Kubernetes) was only available with VCF & NSX-T. However, with the release of vSphere 7.0U1, whilst we continue to have VCF with Tanzu, there is a new version outside of VCF called vSphere with Tanzu. I have written about how to get started with this new version, from covering the prerequisites, deploying a HA-Proxy, enabling vSphere with Tanzu Workload Management and deploying your first TKG ‘guest’ cluster. In this…