Introduction to Kubernetes operators

What are Kubernetes Operators?

Kubernetes operators are software extensions that manage both cluster and non-cluster resources on behalf of Kubernetes. The Java Operator SDK (JOSDK) makes it easy to implement Kubernetes operators in Java, with APIs designed to feel natural to Java developers and framework handling of common problems so you can focus on your business logic.

Why Use Java Operator SDK?

JOSDK provides several key advantages:

• Java-native APIs that feel familiar to Java developers
• Automatic handling of common operator challenges (caching, event handling, retries)
• Production-ready features like observability, metrics, and error handling
• Simplified development so you can focus on business logic instead of Kubernetes complexities

Learning Resources

Getting Started

• Introduction to Kubernetes operators - Core concepts explained
• Implementing Kubernetes Operators in Java - Introduction talk
• Kubernetes operator pattern documentation - Official Kubernetes docs

Deep Dives

• Problems JOSDK solves - Technical deep dive
• Why Java operators make sense - Java in cloud-native infrastructure
• Building a Kubernetes operator SDK for Java - Framework design principles

Tutorials

• Writing Kubernetes operators using JOSDK - Step-by-step blog series