Other articles

1. Strategic vs Tactical

   Entire books have been written on the topic of Strategic vs Tactical. At the risk of creating more noise, I'd like to add my experience to the collection.

   Talking with Tom Hatch about, well, a lot of things, this topic came up and he had the best illustration. I'm sure …

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2. Automatic Updates for Raspberry Pi's

   Problem

   Raspberry Pi's are great but they don't automatically update themselves. And once we've figured out how to make them do whatever it is we wanted them to do, we're not likely to log back in just for updates.

   We need to set the machine to update itself.

   Solution

   There …

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3. Using cert-manager in Kubernetes with Lets Encrypt

   Problem

   We have Kubernetes. We need a cert. We want to use Let's Encrypt to create (and manage) that cert for us.

   Solution

   We can install cert-manager and, with three objects, do exactly that. At a high level, we create a ClusterIssuer, we configure it with our cloud credentials (in …

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4. Rotating Pinniped Credentials in Tanzu Kubernetes Grid

   Problem

   We've successfully implemented user authentication in our TKG clusters. Now, we'd like to update the client ID/secret for our TKG Management Cluster.

   Solution

   TKG uses Pinniped to support authentication, including to OIDC providers. However, exactly which Kubernetes object we need to update/reconfigure is not immediately obvious. Fortunately …

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5. Cluster Node Autoscaling in Tanzu Kubernetes Grid (TKG)

   Problem

   We need to reliably implement cluster autoscaling for our Kubernetes platform. How can we do that? And how can we know it's working?

   Solution

   TKG uses the ClusterAPI provider, part of the Cluster Autoscaler but makes it easy to configure. We'll ask TKG to enable Cluster Autoscaler for us …

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6. User Management in Tanzu Kubernetes Grid (TKG)

   Problem

   User management is not part of Kubernetes. You have to tie Kubernetes to an external system. This gets.... complicated.

   Solution

   For TKG, we can hook our Kubernetes clusters up to any OIDC provider. For this excercise, we'll use Okta. At a high level, here's what we'll do.

   • Create a …

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7. GPU-Enabled Kubernetes Clusters with Tanzu Kubernetes Grid

   Stated Goal

   We want easy GPU access for Kubernetes workloads in our TKG clusters. This is done by:

   • Installing GPU device drivers on our Kubernetes worker nodes
   • Installing the device plugins on our Kubernetes worker nodes
   • Applying the appropriate labels to our Kubernetes worker nodes so that GPU workloads can …

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8. kapp-controller Getting Started

   Problem

   As of today, there is no single answer to the question "How do I deploy my workload?". Helm Chart? A set of yaml files? Templated yaml files?

   And not just user-facing apps - how do I consistently deploy ingress controllers? K8s cluster user auth services? Diagnostics, metrics, and so forth …

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9. Vsphere 7u1 - Embedded Kubernetes with HA Proxy and Ubiquiti Home Networking Setup

   Problem

   Now that Vsphere 7u1 is out (yay!), you, too, can run Vsphere with Kubernetes without NSX-T. But for the home lab of a former developer, what does that look like? We have our fancy Ubiquiti networking but we're not sure how to make the right networks. We also don't …

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