Hands-On Microservices with Spring Boot and Spring Cloud

Introducing Kustomize

Kustomize is a tool that's used for creating environment-specific customizations of the Kubernetes definitions files, that is, the YAML files, for example, for development, test, staging, and production environments. Common definition files are stored in a base folder, while environment-specific additions are kept in environment-specific overlay folders. Environment-specific information can, for example, be any of the following:

• What version of the Docker images to use
• Number of replicas to run 
• Resource quotas in terms of CPU and memory

Each folder contains a kustomization.yml file that describes its content for Kustomize. When deploying to a specific environment, Kustomize will take the content from the base folder ...