Operators in Kubernetes are the custom extensions to Kubernetes that uses custom resources to manage applications and their components by following a notable Kubernetes principle of the control loop.
Aiming to be Kubernetes expert, then make your first step by registering yourself for Kubernetes training from Intellipaat which is 10 hrs of online instructor-led training and 20hrs of project and exercises to gain sufficient hands-on experience.
Also, watch our YouTube video on Kubernetes training to help you gain more insight.