优化脚本

.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"

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
+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

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 ..

2-create_k8s.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-apiserver="10.0.0.3"
+apiserver="__API_SERVER__"
 
 
 sudo kubeadm init \

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
     }
 }
 

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
     }
 }
 

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
     }
 }