KubeSphere S2I (Source-to-Image) / B2I (Binary-to-Image) provides easy-to-use CI/CD functionalities, helping developers to publish their services to Kubernetes without writing Dockefile.
All resources of S2I/B2I will be installed in namespace kubesphere-devops-system when DevOps component enabled.
In S2I, all resources and CI/CD steps are defined with Custom Resource Defintion (CRD). You can operate all S2I resources by calling K8s API directly.
There are two modules included in the S2I component:
- S2I operator: A Kubernetes CRD controller that provides easy Kubernetes-style resources for declaring CI/CD-style pipelines.
- S2IRun: It is the instance that executes the S2I build process in containers.
Besides, the S2I stack includes the following CRD resources:
- s2ibuildertemplates: defines information about S2I builder image.
- s2ibuilders: all configuration information used in building is stored in this CRD.
- s2iruns: defines an action about build.
Here is a graph that describes the relationship about all CRDs within S2I architecture:
Also you can install S2I component in any Kubernetes cluster without installing KubeSphere.
If you want to see more about S2I, please go to S2I Operator and S2IRun.