diff --git a/content/post/k8s-install.md b/content/post/k8s-install.md
index 0fcc3a5..b48ade5 100644
--- a/content/post/k8s-install.md
+++ b/content/post/k8s-install.md
@@ -19,6 +19,7 @@ k8s-node | node124 | 10.0.4.124 | - | CentOS | docker flannel kubelet kube-proxy
 k8s-node | node125 | 10.0.4.125 | - | CentOS | docker flannel kubelet kube-proxy | /opt/kubernetes/
 k8s-node | node126 | 10.0.4.126 | - | CentOS | docker flannel kubelet kube-proxy | /opt/kubernetes/
 
+## 前期准备
 - 全部服务器关闭 firewalld 和 selinux，禁用 swap，部署机(master120)可免密 ssh 登陆其他服务器
 - 软件版本
     - CentOS: 7.7