Operators teach Kubernetes new tricks -- Running operators -- Operators at the Kubernetes interface -- The operator framework -- Sample application: visitors site -- Adapter operators -- Operators in Go with the operator SDK -- Operator lifecycle manager -- Operator philosophy -- Getting involved -- Appendix A: Running an operator as a deployment inside a cluster -- Appendix B: Custom resource validation -- Appendix C: Role-based access control (RBAC)

Operators are a way to package, deploy, and manage applications on Kubernetes. Operators make it easier to automate the lifecycle of complex, stateful programs by adding application-specific skills to a Kubernetes cluster. This book's realistic examples show you how Operators work and how to build them with the Operator Framework and SDK. Operators understand their application's internal state, so they can coordinate installation and upgrades, act to repair failures, and automate repetitive or intricately choreographed maintenance work. Authors Jason Dobies and Joshua Wood show you how to build Operators to extend the Kubernetes control plane and API, helping ops teams and application developers reliably deploy and manage key services and components