diff --git a/README.md b/README.md
index 5fb7d7b7..af809997 100644
--- a/README.md
+++ b/README.md
@@ -35,12 +35,12 @@ There are three scenarios to use KubeKey.
 
 ### <span id = "KubernetesVersions">Kubernetes Versions</span> 
 
-* **v1.15**: &ensp; *v1.15.12*
-* **v1.16**: &ensp; *v1.16.13*
 * **v1.17**: &ensp; *v1.17.9*
 * **v1.18**: &ensp; *v1.18.6*
 * **v1.19**: &ensp; *v1.19.8*  (default)
-* **v1.20**: &ensp; *v1.20.4*
+* **v1.20**: &ensp; *v1.20.6*
+* **v1.21**: &ensp; *v1.21.4*
+* **v1.22**: &ensp; *v1.22.1*
 > Looking for more supported versions [Click here](./docs/kubernetes-versions.md)
 
 ## Requirements and Recommendations
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 196d7171..f8586a9c 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -35,12 +35,12 @@
 
 ### <span id = "KubernetesVersions">Kubernetes 版本</span> 
 
-* **v1.15**: &ensp; *v1.15.12*
-* **v1.16**: &ensp; *v1.16.13*
 * **v1.17**: &ensp; *v1.17.9*
 * **v1.18**: &ensp; *v1.18.6*
 * **v1.19**: &ensp; *v1.19.8*  (default)
-* **v1.20**: &ensp; *v1.20.4*
+* **v1.20**: &ensp; *v1.20.6*
+* **v1.21**: &ensp; *v1.21.4*
+* **v1.22**: &ensp; *v1.22.1*
 > 查看更多支持的版本[点击这里](./docs/kubernetes-versions.md)
 
 ## 要求和建议
diff --git a/apis/kubekey/v1alpha1/default.go b/apis/kubekey/v1alpha1/default.go
index 2a82e332..a995711a 100644
--- a/apis/kubekey/v1alpha1/default.go
+++ b/apis/kubekey/v1alpha1/default.go
@@ -216,6 +216,7 @@ func SetDefaultNetworkCfg(cfg *ClusterSpec) NetworkConfig {
 }
 
 func SetDefaultClusterCfg(cfg *ClusterSpec) Kubernetes {
+	cfg.Kubernetes.Nodelocaldns = true
 	if cfg.Kubernetes.Version == "" {
 		cfg.Kubernetes.Version = DefaultKubeVersion
 	} else {
diff --git a/docs/kubernetes-versions.md b/docs/kubernetes-versions.md
index 3bddebff..596179b1 100644
--- a/docs/kubernetes-versions.md
+++ b/docs/kubernetes-versions.md
@@ -22,6 +22,8 @@
 | v1.19.9   | :white_check_mark: |
 | v1.20.4   | :white_check_mark: |
 | v1.20.6   | :white_check_mark: |
+| v1.21.4   | :white_check_mark: |
+| v1.22.1   | :white_check_mark: |
 
 ## Kubernetes Versions(arm64)
 | Version   |     Supported      |
@@ -42,3 +44,5 @@
 | v1.19.9   | :white_check_mark: |
 | v1.20.4   | :white_check_mark: |
 | v1.20.6   | :white_check_mark: |
+| v1.21.4   | :white_check_mark: |
+| v1.22.1   | :white_check_mark: |
diff --git a/pkg/util/executor/executor.go b/pkg/util/executor/executor.go
index 0f2cca07..393c5283 100644
--- a/pkg/util/executor/executor.go
+++ b/pkg/util/executor/executor.go
@@ -91,6 +91,7 @@ func (executor *Executor) CreateManager() (*manager.Manager, error) {
 	mgr.ClientSet = executor.ClientSet
 	mgr.DownloadCommand = executor.DownloadCommand
 	mgr.EtcdContainer = false
+	// Description: Since docker is no the default container runtime of kubernetes, kubekey no longer uses docker to start etcd.
 	//if (executor.Cluster.Kubernetes.ContainerManager == "" || executor.Cluster.Kubernetes.ContainerManager == "docker") && executor.Cluster.Kubernetes.Type != "k3s" {
 	//	mgr.EtcdContainer = true
 	//}