diff --git a/learning/k8s-intermediate/persistent/nfs.md b/learning/k8s-intermediate/persistent/nfs.md
index 8c88516..22c0b16 100644
--- a/learning/k8s-intermediate/persistent/nfs.md
+++ b/learning/k8s-intermediate/persistent/nfs.md
@@ -33,7 +33,7 @@ Kubernetes 对 Pod 进行调度时，以当时集群中各节点的可用资源
 
 * 执行以下命令安装 nfs 服务器所需的软件包
   ``` sh
-  yum install -y nfs-utils
+  yum install -y rpcbind nfs-utils
   ```
 * 执行命令 `vim /etc/exports`，创建 exports 文件，文件内容如下：
   ```