A first look at the vctl utility in VMware Fusion

Last week I updated my version of VMware Fusion to 11.5.6. If you don’t know about VMware Fusion, it is a VMware product that gives Mac users the ability to run guest virtual machines. One of the new features that I noticed was the inclusion of a new vctl utility (IIRC, it became available first in v11.5.5.).  This is a command line utility for the Nautilus Container Engine which is now part of VMware Fusion. It allows you to work on OCI (Open Container Initiative) containers from your desktop. I decided to take a closer look, and do a few…

Integrating embedded vSphere with Kubernetes Harbor Registry with TKG (guest) clusters

A number of readers have hit me up with queries around how they can use the integrated Harbor image repository (that comes integrated with vSphere with Kubernetes) for applications that are deployed on their Tanzu Kubernetes Grid clusters, sometimes referred to as guest clusters. Unfortunately, there is no defined workflow on how to achieve this. The reason for this is that there are a number of additional life-cycle management considerations that we need to take into account before we can fully integrate these components. This includes adding new TKG nodes to the image registry as a TKG cluster is scaled.…

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…

Kubernetes Storage on vSphere 101 – The basics: PV, PVC, POD

I’ve just returned from KubeCon 2019 in Barcelona, and was surprised to see such a keen interest in how Kubernetes consumed infrastructure related resources, especially storage. Although I have been writing about a lot of Kubernetes related items recently, I wanted to put together a primer on some storage concepts that might be useful as a stepping stone or even on-boarding process to some of you who are quite new to Kubernetes. I am going to talk about this from the point of view of vSphere and vSphere storage. Thus I will try to map vSphere storage constructs such as…

Pivotal and Harbor – x509 certificate issues

After deploying and configuring the Harbor tile in Pivotal Ops Manager, I ran into a couple of issues with certificates. The first was encountered when I was  trying to login to harbor from an Ubuntu VM where I was running all of my PKS and BOSH commands. It was also the VM where I pulled my container  images, and the VM from which I now wanted to push them into Harbor. Harbor is our registry server for storing container images. Here is what I got on trying to login: cormac@pks-cli:~$ sudo docker login -u admin harbor.rainpole.com Password: Error response from…

A primer on First Class Disks/Improved Virtual Disks

A First Class Disk (FCD), also referred to as Improved Virtual Disk (IVDs), is one of the more recent features in vSphere that may have escaped your notice. FCDs were created to address a particular gap that we have in vSphere at this time. We are well aware that within a vSphere environment, it is currently very difficult to manage virtual disks unless they are associated with a virtual machine. A simple example would be snapshots. Snapshots work at a per VM basis, and to only snapshot a single VMDK rather than all VMDK attached to a VM involves a…