operator sdk v0.x和v1.x的区别
operator sdk和kubebuilder整合后（以kubebuilder为主），operator sdk发布了v1.x版本，operator sdk的项目layout、scaffold、dependency、 usage、code等发生了变化
底层相似：under the hood using controller-runtime、controller-tools to adding a manager, api scheme and creates an structs implements a reconciler interface整合项目：/kubernetes-sigs/kubebuilder/projects/7， 7月25日开始，11月7日关闭了未来规划：operator-sdk commit参与kubebuilder的开发维护；文档会将基于go的operator文档集成到kubebuilder文档，未来共同维护kubebuilder文档的更新
版本主要变化
主要参考链接：https://sdk.operatorframework.io/docs/building-operators/golang/migration/
new layout：operator-sdk在向kubebuilder的layout靠拢scaffold：新增kustomize、kube-auth-proxy、envtest等dependency kubebuilder go CLI v2 to v3(operator-sdk v1.2对应kubebuilder v2； operator-sdk v1.4对应kubebuilder v3) The minimum Go version is now 1.15controller-runtime to v0.8.0（https://master.book.kubebuilder.io/migration/v2vsv3.htmlcontroller-tools to v0.4.1新增：因为operator metrics需要kustomize ，Support for kustomize v3.8.7 operator-lib v0.4.0 ，because of controller-runtime v0.8.0kubernetes：最高支持版本v1.19，低版本也支持（/operator-framework/operator-sdk/releases/tag/v1.3.0） command operator-sdk generate crds is replaced with make manifests, which generates CRDs and RBAC rules.operator-sdk build is replaced with make docker-build IMG=/:tag…等 code：func、interface等发生变化
