Writing a Custom Controller: Extending the Functionality of Your Cluster [I] - Aaron Levy

Writing a Custom Controller: Extending the Functionality of Your Cluster [I] - Aaron Levy, CoreOS
Much of the functionality in a Kubernetes cluster is managed by a reconciliation pattern within "controllers". The node, service, or deployment controllers (just to name a few) watch for changes to objects, then act on those changes to drive your cluster to a desired state. This same pattern can be used to implement custom logic, which can be used to extend the functionality of your cluster without ever needing to modify Kubernetes itself.
This talk will cover how to implement your own custom controller, from contacting the Kubernetes API to using existing libraries to easily watch, react, and update components in your cluster. By building on existing functionality and following a few best practices, you can quickly and easily implement your own custom controller.
About Aaron Levy
Aaron Levy is a software engineer at CoreOS, working on all things Kubernetes. He is also the lead maintainer of bootkube, a kubernetes-incubator project that enables launching self-hosted kubernetes clusters.
Join us for KubeCon + CloudNativeCon in Barcelona May 20 - 23, Shanghai June 24 - 26, and San Diego November 18 - 21! Learn more at kubecon.io. The conference features presentations from developers and end users of Kubernetes, Prometheus, Envoy and all of the other CNCF-hosted projects.

[@theodoreomtzigt7145]

The KZbin algorithm has been spewing the wrong K8s operator presentations: this is so much better than many of the 'explanations' that came after, but I had to weed through a dozen to get this one. Tells you that the KZbin AI still has a long way to go to be useful.

[@alveedev]

great talks

[@xarakus]

spoke a little too fast for audience who may be unfamiliar