Writing Kube Controllers for Everyone - Maciej Szulik, Red Hat (Beginner Skill Level)

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Writing Kube Controllers for Everyone - Maciej Szulik, Red Hat (Beginner Skill Level)

With the introduction of Custom Resource Definition, as well as external API servers everyone is now able to create its own resources and store them inside kubernetes cluster. But that is only half of the work that needs to be done. During this presentation Maciej, who co-authored both Job and CronJob controllers, and is a frequent reviewer of controller and apiserver-related code will guide you through basic set of steps that are necessary to write a simple controller. As an example he will discuss his recent work around improving CronJob controller, as well as introduce the 11 rules that needs to be fulfilled when writing a good controller. Topics to be covered include: 1. How controllers work, loop over:* monitor resources * react to changes 2. Shared Informers. 3. Owner references. 4. Emitting status. 5. Handling errors.

About Maciej
Maciej is a passionate developer with over 10 years of experience in many languages. He's working on OpenShift and Kubernetes for Red Hat. In his free time he enjoys hacking on bugs.python.org and CPython's IMAP library. He's a frequent speaker at various events and meet ups, including both previous KubeCon EUs, multiple PyCons and DevConfs.
Join us for KubeCon + CloudNativeCon in Barcelona May 20 - 23, Shanghai June 24 - 26, and San Diego November 18 - 21! Learn more at https://kubecon.io. The conference features presentations from developers and end users of Kubernetes, Prometheus, Envoy and all of the other CNCF-hosted projects.