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refine s2i_b2i_overview.md

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pengfei
2019-12-23 10:47:25 +08:00
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docs/en/concepts-and-designs/s2i_b2i_overview.md
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# Kubesphere S2I/B2I overview
# KubeSphere S2I/B2I overview
Kubesphere S2I/B2I provides easy CI/CD functionality.
## What is S2I/B2I
It will installed in namespaces `kubesphere-devops-system` by enable devops component.
Kubesphere S2I(Source-to-Image) / B2I(Binary-to-Image) provides easy CI/CD functionalities, help developers to publish their service to Kubernetes without writing Dockefile.
In S2I, all resource and CI/CD steps are defined with [Custom Resource Defintion](https://kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/) (CRD). You can operate all s2i resource by call k8s api directly.
## Workflow Example
There are two mudule included in the S2I component:
![](https://pek3b.qingstor.com/kubesphere-docs/png/20191223103533.png)
## Principle
All resources of S2I/B2I will be installed in namespace `kubesphere-devops-system` by enable devops component.
In S2I, all resources and CI/CD steps are defined with [Custom Resource Defintion](https://kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/) (CRD). You can operate all s2i resources by call k8s api directly.
There are two mudules included in the S2I component:
1. S2I Operator: A Kubernetes CRD controller that provides easy Kubernetes-style resources for declaring CI/CD-style pipelines
2. S2IRun: It is the instance that executes the s2i build process in containers.
@@ -17,6 +25,6 @@ Besides, the S2I stack includes following CRD resources:
2. s2ibuilders: all configuration information used in building are stored in this CRD.
3. s2iruns: defines an action about build
Also you can install S2I component in any kubernetes cluster without kubesphere.
Also you can install S2I component in any kubernetes cluster without KubeSphere.
Want to see more about s2i, please jump to [S2I Operator](https://github.com/kubesphere/s2ioperator) and [S2IRun](https://github.com/kubesphere/s2irun)
Want to see more about s2i, please jump to [S2I Operator](https://github.com/kubesphere/s2ioperator) and [S2IRun](https://github.com/kubesphere/s2irun)