Hands-On Microservices with Kubernetes

Using operators

A Kubernetes operator is a controller that encapsulates operational knowledge of some application. It can manage installation, configuration, updates, fail-overs, and more. Operators often rely on CRDs to keep their own state and can automatically respond to events. Providing an operator is quickly becoming the way to release new, complicated software.

Helm charts are fine for installing the bits onto the cluster (and operators may use Helm charts for that purpose), but there is a lot of ongoing management associated with complex components, such as data stores, monitoring solutions, CI/CD pipelines, message brokers, and serverless frameworks.

The trend here is very clear: complex projects will provide operators as a standard ...