diff --git a/.env b/.env
new file mode 100644
index 0000000..ddd0a2f
--- /dev/null
+++ b/.env
@@ -0,0 +1,4 @@
+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/0-config.sh b/0-config.sh
index e096411..fe8eef6 100755
--- a/0-config.sh
+++ b/0-config.sh
@@ -1,13 +1,12 @@
 #!/bin/bash
+set -euo pipefail
 
-master1="10.0.0.112"
-master2="10.0.0.122"
-master3="10.0.0.132"
-vip="10.0.0.32"
+source .env
 
-sed -e "s/10.0.0.11/${master1}/g" \
-    -e "s/10.0.0.12/${master2}/g" \
-    -e "s/10.0.0.13/${master3}/g" \
-    -e "s/10.0.0.3/${vip}/g" \
-    -i keepalived/*.conf \
-    -i 2-create_k8s.sh
\ No newline at end of file
+sed -e "s/__MASTER1__/${MASTER1}/g" \
+    -e "s/__MASTER2__/${MASTER2}/g" \
+    -e "s/__MASTER3__/${MASTER3}/g" \
+    -e "s/__VIP__/${VIP}/g" \
+    -i keepalived/*.conf
+
+sed -e "s/__API_SERVER__/${VIP}/g" -i 2-create_k8s.sh
\ No newline at end of file
diff --git a/1-init.sh b/1-init.sh
index bcb22ee..bdd12fe 100755
--- a/1-init.sh
+++ b/1-init.sh
@@ -1,4 +1,11 @@
-sudo systemctl disable --now firewalld
+#!/bin/bash
+
+if [ $(id -u) != "0" ]; then
+    echo "Error: You must be root to run this script"
+    exit 1
+fi
+
+systemctl disable --now firewalld
 setenforce 0
 sed -i "s/^SELINUX=.*/SELINUX=disabled/g" /etc/selinux/config
 
@@ -15,7 +22,7 @@ EOF
 sudo sysctl --system
 
 # 关闭swap
-sudo swapoff -a
+swapoff -a
 sed -i 's/.*swap.*/#&/' /etc/fstab
 
 cd ./docker && bash ./install.sh && cd ..
diff --git a/2-create_k8s.sh b/2-create_k8s.sh
index 81fe583..fe17eb2 100755
--- a/2-create_k8s.sh
+++ b/2-create_k8s.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-apiserver="10.0.0.3"
+apiserver="__API_SERVER__"
 
 
 sudo kubeadm init \
diff --git a/keepalived/keepalived1.conf b/keepalived/keepalived1.conf
index 2f7658f..328001f 100644
--- a/keepalived/keepalived1.conf
+++ b/keepalived/keepalived1.conf
@@ -22,13 +22,13 @@ vrrp_instance VI_1 {                        # 实例名
     track_script {
         check
     }
-    unicast_src_ip 10.0.0.11
+    unicast_src_ip __MASTER1__
     unicast_peer {
-        10.0.0.12 
-        10.0.0.13
+        __MASTER2__ 
+        __MASTER3__
     }
     virtual_ipaddress {
-        10.0.0.3 dev ens192
+        __VIP__ dev ens192
     }
 }
 
diff --git a/keepalived/keepalived2.conf b/keepalived/keepalived2.conf
index 2036720..3813e04 100644
--- a/keepalived/keepalived2.conf
+++ b/keepalived/keepalived2.conf
@@ -22,13 +22,13 @@ vrrp_instance VI_1 {                        # 实例名
     track_script {
         check
     }
-    unicast_src_ip 10.0.0.12
+    unicast_src_ip __MASTER2__
     unicast_peer {
-        10.0.0.11
-        10.0.0.13
+        __MASTER1__
+        __MASTER3__
     }
     virtual_ipaddress {
-        10.0.0.3 dev ens192
+        __VIP__ dev ens192
     }
 }
 
diff --git a/keepalived/keepalived3.conf b/keepalived/keepalived3.conf
index e2fb008..29d8264 100644
--- a/keepalived/keepalived3.conf
+++ b/keepalived/keepalived3.conf
@@ -22,13 +22,13 @@ vrrp_instance VI_1 {                        # 实例名
     track_script {
         check
     }
-    unicast_src_ip 10.0.0.13
+    unicast_src_ip __MASTER3__
     unicast_peer {
-        10.0.0.11
-        10.0.0.12
+        __MASTER1__
+        __MASTER2__
     }
     virtual_ipaddress {
-        10.0.0.3 dev ens192
+        __VIP__ dev ens192
     }
 }