Daily Archives: 07/21/2025

Kubernetes: Kubernetes API, API groups, CRDs, and the etcd
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21 July 2025

I actually started to write about creating my own Kubernetes Operator, but decided to make a separate topic about what a Kubernetes CustomResourceDefinition is, and how creating a CRD works at the level of the Kubernetes API and the etcd. That is, to start with how Kubernetes actually works with resources, and what happens when… Read More: Kubernetes: Kubernetes API, API groups, CRDs, and the etcd0 (0) »

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Kubernetes: what are the Kubernetes Operator and CustomResourceDefinition
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21 July 2025

Perhaps everyone has used operators in Kubernetes, for example, PostgreSQL operator, VictoriaMetrics Operator. But what’s going on under the hood? How and to what are CustomResourceDefinition (CRD) applied, and what is an “operator”? And finally, what is the difference between a Kubernetes Operator and a Kubernetes Controller? In the previous part – Kubernetes: Kubernetes APIs,… Read More: Kubernetes: what are the Kubernetes Operator and CustomResourceDefinition0 (0) »

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