diff --git a/.env b/.env
deleted file mode 100644
index ddd0a2f..0000000
--- a/.env
+++ /dev/null
@@ -1,4 +0,0 @@
-MASTER1="10.0.0.112"
-MASTER2="10.0.0.122"
-MASTER3="10.0.0.132"
-VIP="10.0.0.32"
\ No newline at end of file
diff --git a/README.md b/README.md
index 8c6d5ca..0553d16 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # offline-kubernetes-install
 
-完全离线的情况下, 安装k8s集群, 基于CentOS7, k8s 1.21.10 版本, 容器运行时 是docker
+完全离线的情况下, 安装k8s集群, 基于 CentOS7, k8s 1.21.10 版本, 容器运行时 是docker
 
 | 脚本               | 说明                                   |
 | ------------------ | -------------------------------------- |
@@ -16,3 +16,10 @@
 
 ## 单节点k8s部署
 
+1. 执行 scripts/0-download.sh 下载需要的包
+2. 修改 single.env 里面的apiserver地址
+3. 执行 single.sh 即可创建集群
+
+## 集群部署
+
+前提条件： 代码克隆到 master1 上面， 确保 master1 可以免密访问其他节点
diff --git a/scripts/2-create_k8s.sh b/scripts/2-create_k8s.sh
index 68d425e..61bd0d1 100755
--- a/scripts/2-create_k8s.sh
+++ b/scripts/2-create_k8s.sh
@@ -3,7 +3,7 @@ set -euo pipefail
 
 apiserver="__API_SERVER__"
 
-
+# 初始化集群
 sudo kubeadm init \
     --kubernetes-version 1.21.10 \
     --control-plane-endpoint "${apiserver}:6443" \
@@ -11,10 +11,12 @@ sudo kubeadm init \
     --service-cidr=10.96.0.0/12 \
     --pod-network-cidr=10.244.0.0/16
 
+# 配置kubeconfig
 mkdir -p $HOME/.kube
 sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
 sudo chown $(id -u):$(id -g) $HOME/.kube/config
 
+# kubectl自动补全
 if [ $(grep -c "kubectl completion bash" /root/.bashrc) -eq 0 ];then
 cat <<EOF | sudo tee -a /root/.bashrc
 source /usr/share/bash-completion/bash_completion
@@ -22,4 +24,5 @@ source <(kubectl completion bash)
 EOF
 fi
 
+# 安装flannel
 cd ../flannel && bash install.sh && cd -
diff --git a/single.env b/single.env
new file mode 100644
index 0000000..dc162e8
--- /dev/null
+++ b/single.env
@@ -0,0 +1,2 @@
+# 单节点 填自己的IP地址
+API_SERVER="10.0.0.32"
\ No newline at end of file
diff --git a/single.sh b/single.sh
old mode 100644
new mode 100755
index 48e8d41..30632ab
--- a/single.sh
+++ b/single.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -euo pipefail
 
-VIP="10.0.0.32"
+source single.env
 
 if [ $(id -u) != "0" ]; then
     echo "Error: You must be root to run this script"
@@ -10,6 +10,6 @@ fi
 
 cd scripts
 ./1-init.sh
-sed -e "s/^apiserver=.*/apiserver=${VIP}/g" -i 2-create_k8s.sh
+sed -e "s/^apiserver=.*/apiserver=${API_SERVER}/g" -i 2-create_k8s.sh
 ./2-create_k8s.sh
 ./3-nginx_ingress.sh