diff --git a/content/zh/docs/tutorials/_index.md b/content/zh/docs/tutorials/_index.md
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--- a/content/zh/docs/tutorials/_index.md
+++ b/content/zh/docs/tutorials/_index.md
@@ -45,12 +45,6 @@ Before walking through each tutorial, you may want to bookmark the
 * [Kubernetes Basics](/docs/tutorials/kubernetes-basics/) is an in-depth interactive tutorial that helps you understand the Kubernetes system and try out some basic Kubernetes features.
 -->
 
-* [使用 Kubernetes (Udacity) 的可伸缩微服务](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
-
-<!--
-* [Scalable Microservices with Kubernetes (Udacity)](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
--->
-
 * [介绍 Kubernetes (edx)](https://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x#)
 
 <!--
diff --git a/content/zh/docs/tutorials/online-training/_index.md b/content/zh/docs/tutorials/online-training/_index.md
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----
-title: "在线培训课程"
-weight: 20
----
diff --git a/content/zh/docs/tutorials/online-training/overview.md b/content/zh/docs/tutorials/online-training/overview.md
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----
-title: Kubernetes 在线培训概述
-content_type: concept
----
-<!--
----
-title: Overview of Kubernetes Online Training
-content_type: concept
----
--->
-
-<!-- overview -->
-
-<!--
-Here are some of the sites that offer online training for Kubernetes:
--->
-以下是提供 Kubernetes 在线培训的一些网站:
-
-
-
-<!-- body -->
-
-<!--
-* [AIOps Essentials (Autoscaling Kubernetes with Prometheus Metrics) with Hands-On Labs (Linux Academy)](https://linuxacademy.com/devops/training/course/name/using-machine-learning-to-scale-kubernetes-clusters)
--->
-* [AIOps Essentials (使用 Prometheus 度量标准自动缩放 Kubernetes) 和动手实验室 (Linux 学院)]
- (https://linuxacademy.com/devops/training/course/name/using-machine-learning-to-scale-kubernetes-clusters)
-
-<!--
-* [Amazon EKS Deep Dive with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/amazon-web-services/training/course/name/amazon-eks-deep-dive)
--->
-* [带有动手实验室的 Amazon EKS 深入研究(Linux 学院)] (https://linuxacademy.com/amazon-web-services/training/course/name/amazon-eks-deep-dive)
-
-<!--
-* [Cloud Native Certified Kubernetes Administrator (CKA) with Hands-On Labs & Practice Exams (Linux Academy)](https://linuxacademy.com/linux/training/course/name/cloud-native-certified-kubernetes-administrator-cka)
--->
-* [具有动手实验和实践考试的 Cloud Native 认证 Kubernetes 管理员 (CKA)(Linux 学院)]
-(https://linuxacademy.com/linux/training/course/name/cloud-native-certified-kubernetes-administrator-cka)
-
-<!--
-* [Certified Kubernetes Administrator Preparation Course with Practice Tests (KodeKloud)](https://kodekloud.com/p/certified-kubernetes-administrator-with-practice-tests)
--->
-* [带有实践测试的认证 Kubernetes 管理员准备课程 (KodeKloud)](https://kodekloud.com/p/certified-kubernetes-administrator-with-practice-tests)
-
-<!--
-* [Certified Kubernetes Application Developer (CKAD) with Hands-On Labs & Practice Exams (Linux Academy)] (https://linuxacademy.com/containers/training/course/name/certified-kubernetes-application-developer-ckad/)
--->
-* [经过实践实验室和实践考试认证的 Kubernetes 应用程序开发人员(CKAD) (Linux 学院)] (https://linuxacademy.com/containers/training/course/name/certified-kubernetes-application-developer-ckad/)
-
-<!--
-* [Certified Kubernetes Application Developer Preparation Course with Practice Tests (KodeKloud)](https://kodekloud.com/p/kubernetes-certification-course)
--->
-* [经过认证的带有实践测试的 Kubernetes 应用程序开发人员准备课程 (KodeKloud)](https://kodekloud.com/p/kubernetes-certification-course)
-
-<!--
-*[Getting Started with Google Kubernetes Engine (Coursera)](https://www.coursera.org/learn/google-kubernetes-engine)
--->
-* [Google Kubernetes 引擎入门(Coursera)](https://www.coursera.org/learn/google-kubernetes-engine)
-
-<!--
-* [Getting Started with Kubernetes (Pluralsight)](https://www.pluralsight.com/courses/getting-started-kubernetes)
--->
-* [Kubernetes 入门 (Pluralsight)]
-(https://www.pluralsight.com/courses/getting-started-kubernetes)
-
-<!--
-* [Getting Started with Kubernetes Clusters on OCI Oracle Kubernetes Engine (OKE) (Learning Library)](https://apexapps.oracle.com/pls/apex/f?p=44785:50:0:::50:P50_EVENT_ID,P50_COURSE_ID:5935,256)
--->
-* [OCI Oracle Kubernetes 引擎(OKE)上的 Kubernetes集群入门 (学习库)](https://apexapps.oracle.com/pls/apex/f?p=44785:50:0:::50:P50_EVENT_ID,P50_COURSE_ID:5935,256)
-
-<!--
-* [Google Kubernetes Engine Deep Dive (Linux Academy)] (https://linuxacademy.com/google-cloud-platform/training/course/name/google-kubernetes-engine-deep-dive)
--->
-* [Google Kubernetes 引擎深度学习 (Linux 学院)]
-(https://linuxacademy.com/google-cloud-platform/training/course/name/google-kubernetes-engine-deep-dive)
-
-<!--
-* [Helm Deep Dive with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/helm-deep-dive-part-1)
--->
-* [通过动手实验室进行深度学习(Linux 学院)] (https://linuxacademy.com/linux/training/course/name/helm-deep-dive-part-1)
-
-<!--
-* [Hands-on Introduction to Kubernetes (Instruqt)](https://play.instruqt.com/public/topics/getting-started-with-kubernetes)
--->
-* [Kubernetes 的动手入门 (Instruqt)]
-(https://play.instruqt.com/public/topics/getting-started-with-kubernetes)
-
-<!--
-* [IBM Cloud: Deploying Microservices with Kubernetes (Coursera)](https://www.coursera.org/learn/deploy-micro-kube-ibm-cloud)
--->
-* [IBM Cloud: 使用 Kubernetes 部署微服务 (Coursera)](https://www.coursera.org/learn/deploy-micro-kube-ibm-cloud)
-
-<!--
-* [Introduction to Kubernetes (edX)](https://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x)
--->
-* [Kubernetes (edX) 简介](https://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x)
-
-<!--
-* [Kubernetes Essentials with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/kubernetes-essentials)
--->
-* [带动手实验室的 Kubernetes Essentials (Linux 学院)] (https://linuxacademy.com/linux/training/course/name/kubernetes-essentials)
-
-<!--
-* [Kubernetes for the Absolute Beginners with Hands-on Labs (KodeKloud)](https://kodekloud.com/p/kubernetes-for-the-absolute-beginners-hands-on)
--->
-* [通过动手实验室为绝对初学者提供 Kubernetes (KodeKloud)](https://kodekloud.com/p/kubernetes-for-the-absolute-beginners-hands-on)
-
-<!--
-* [Kubernetes Fundamentals (LFS258) (The Linux Foundation)](https://training.linuxfoundation.org/training/kubernetes-fundamentals/)
--->
-* [Kubernetes 基础 (LFS258) (Linux 基金会)](https://training.linuxfoundation.org/training/kubernetes-fundamentals/)
-
-<!--
-* [Kubernetes Quick Start with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/kubernetes-quick-start)
--->
-* [Kubernetes 动手实验室快速入门 (Linux 学院)] (https://linuxacademy.com/linux/training/course/name/kubernetes-quick-start)
-
-<!--
-* [Kubernetes the Hard Way with Hands-On Labs (Linux Academy)](https://linuxacademy.com/linux/training/course/name/kubernetes-the-hard-way)
--->
-* [Kubernetes 通过动手实验室解决难题 (Linux 学院)](https://linuxacademy.com/linux/training/course/name/kubernetes-the-hard-way)
-
-<!--
-* [Kubernetes Security with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/kubernetes-security)
--->
-* [通过动手实验室实现 Kubernetes 安全性(Linux 学院)] (https://linuxacademy.com/linux/training/course/name/kubernetes-security)
-
-<!--
-* [Launch Your First OpenShift Operator with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/containers/training/course/name/red-hat-open-shift)
--->
-* [通过动手实验室启动您的第一个 OpenShift 操作 (Linux 学院)] (https://linuxacademy.com/containers/training/course/name/red-hat-open-shift)
-
-<!--
-* [Learn Kubernetes by Doing - 100% Hands-On Experience (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/learn-kubernetes-by-doing)
--->
-* [边干边学 Kubernetes  - 100% 动手体验 (Linux 学院)] (https://linuxacademy.com/linux/training/course/name/learn-kubernetes-by-doing)
-
-<!--
-* [Learn Kubernetes using Interactive Hands-on Scenarios (Katacoda)](https://www.katacoda.com/courses/kubernetes/)
--->
-* [使用交互式动手场景学习 Kubernetes (Katacoda)](https://www.katacoda.com/courses/kubernetes/)
-
-<!--
-* [Microservice Applications in Kubernetes - 100% Hands-On Experience (Linux Academy)] (https://linuxacademy.com/devops/training/course/name/learn-microservices-by-doing)
--->
-* [Kubernetes中的微服务应用程序 - 100% 动手体验 (Linux Academy)] (https://linuxacademy.com/devops/training/course/name/learn-microservices-by-doing)
-
-<!--
-* [Monitoring Kubernetes With Prometheus with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/kubernetes-and-prometheus)
--->
-* [通过动手实验室使用 Prometheus 监控 Kubernetes (Linux 学院)] (https://linuxacademy.com/linux/training/course/name/kubernetes-and-prometheus)
-
-<!--
-* [Service Mesh with Istio with Hands-On Labs (Linux Academy)] (https://linuxacademy.com/linux/training/course/name/service-mesh-with-istio-part-1)
--->
-* [带动手实验室的 Istio 服务网络 (Linux 学院)] (https://linuxacademy.com/linux/training/course/name/service-mesh-with-istio-part-1)
-
-<!--
-* [Scalable Microservices with Kubernetes (Udacity)](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
--->
-* [使用 Kubernetes 的可扩展微服务(Udacity)]
-(https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
-
-<!--
-* [Self-paced Kubernetes online course (Learnk8s Academy)](https://learnk8s.io/academy)
--->
-* [自定进度的 Kubernetes 在线课程 (Learnk8s 学院)]
-(https://learnk8s.io/academy)
-
-