kubernetes
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Kubernetes Controllers via Metatron (Part 3)
Previously, in Part 1 I described Kubernetes Controllers and the Operator pattern. In Part 2, I explained why Controllers are important and how Metacontroller makes it easier to build them in your favorite language. In this, the 3rd and final part of this series, I’ll…
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Kubernetes Controllers via Metatron (Part 2)
Previously in Part 1, I discussed what Kubernetes Controllers are, how they work, and gave some examples of their usage. I also gave a description of Operators and explained how they are just a specific kind of Controller. All this in the service of explaining…
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Kubernetes Controllers via Metatron (Part 1)
I recently released a new Ruby gem called Metatron. This gem aims to make it very easy to create Kubernetes controllers, either to implement the Operator pattern or to respond to events related to built-in resource types. It does this by deferring to Metacontroller for…
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Cert Manager, NAT Loopback, and CoreDNS
I recently ran into an interesting issue with my home Kubernetes environment that runs my blog. As I mentioned in a previous post, I run my blog on k3s and I use cert-manager to manage my SSL certificates provided by Let’s Encrypt. Let’s say that…
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Kubernetes Node Affinity and EBS Volumes
Occasionally, Kubernetes workloads require specialized nodes. Sometimes it’s for machine learning, or to save money through burstable node types, or maybe just to lock certain Pods to a dedicated subset of nodes. Thankfully, Kubernetes offers a few useful mechanisms to inform the scheduler how we’d…
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Redirecting Domains on a Traefik Ingress
I recently posted about my experience with k3s and how I’m now using it to run my blog. I also mentioned my blog’s new domain and how I’m keeping the old name working. That involved changing the Ingress resource for my blog, so I’ll show…
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Blogging on Kubernetes
It has been a while since I last posted, but between college, work, and kids, I’ve been pretty busy. That said, I recently attended KubeCon 2019 and saw a lot of interesting presentations. As a fan of Rancher, I gravitated toward a lot of their…