diff --git a/MySQL自动切换主从/switch_master_slave.sh b/MySQL自动切换主从/switch_master_slave.sh
new file mode 100644
index 0000000..4bd26be
--- /dev/null
+++ b/MySQL自动切换主从/switch_master_slave.sh
@@ -0,0 +1,94 @@
+#!/bin/bash
+#set -x
+# 设置变量
+MASTER_HOST="10.10.29.8"    # 主服务器IP地址
+SLAVE_HOST="10.10.29.9"    # 从服务器IP地址
+MYSQL_USER="root"             # MySQL用户名
+MYSQL_PASSWORD="Unary@2023"     # MySQL密码
+MYSQL_PORT=3306               # MySQL端口
+#同步账户和密码
+MYSQL_REPL_USER="repl"
+MYSQL_REPL_PASSWD="Unary@2023"
+
+# TODO(MH:)获取当前主从关系
+get_current_roles() {
+    if [ -f "$IDENTIFIER_FILE" ]; then
+        CURRENT_ROLE=$(cat "$IDENTIFIER_FILE")
+    else
+        CURRENT_ROLE="unknown"
+    fi
+}
+
+
+set_master_redonly(){
+    # 设置为只读
+    mysql -h$MASTER_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "set global super_read_only='on';set global read_only='on';"
+    # 获取设置后的状态
+    on_number=$(mysql -h$MASTER_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "show VARIABLES like '%read_only%' "|grep ON |wc -l)
+    
+    # 检查等于 "ON"的个数，判断是否修改成功了
+    if [ "$on_number" != "2" ]; then
+        echo "主节点设置只读异常，请人工确认！！"
+        exit 1
+    fi
+}
+set_slaver_status(){
+    # 停止从节点，并重置从节点的同步信息
+    mysql -h$SLAVE_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "stop slave;reset slave all;"
+    # 设置关闭只读
+    mysql -h$SLAVE_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "set global super_read_only='off';set global read_only='off';"
+    # 获取设置后的状态
+    off_number=$(mysql -h$SLAVE_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "show VARIABLES like '%read_only%' "|grep OFF |wc -l)
+    
+    # 检查等于 "ON"的个数，判断是否修改成功了
+    if [ "$off_number" != "4" ]; then
+        echo "从节点设置关闭只读异常，请人工确认！！"
+        exit 1
+    fi
+}
+
+
+# 获取主服务器的binlog文件和位置
+get_old_slaver_status() {
+    MASTER_LOG_FILE=$(mysql -h$SLAVE_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "SHOW MASTER STATUS\\G" | grep File | awk '{print $2}')
+    MASTER_LOG_POS=$(mysql -h$SLAVE_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "SHOW MASTER STATUS\\G" | grep Position | awk '{print $2}')
+}
+
+# 在从服务器上执行SQL命令，设置新的主服务器
+configure_slave() {
+    echo "Configuring slave on $host to use new master..."
+    upsql="CHANGE MASTER to MASTER_HOST='${SLAVE_HOST}',MASTER_USER='${MYSQL_REPL_USER}',MASTER_PASSWORD='${MYSQL_REPL_PASSWD}',MASTER_LOG_FILE='${MASTER_LOG_FILE}',MASTER_LOG_POS=${MASTER_LOG_POS}"
+    # 执行
+    mysql -h$MASTER_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "${upsql};start slave;"
+}
+
+# 检查复制状态
+check_replication_status() {
+    echo "Checking replication status on $host..."
+    #校验原来的主节点，现在应该是从节点
+    REPLICATION_STATUS=$(mysql -h$MASTER_HOST -u$MYSQL_USER -p$MYSQL_PASSWORD -P$MYSQL_PORT -e "show slave status\\G;"|grep -E "Slave_IO_Running: Yes|Slave_SQL_Running: Yes|Seconds_Behind_Master: 0"|wc -l)
+    
+    # 判断是否修改成功了
+    if [ "$off_number" != "3" ]; then
+        echo "主从切换异常，请人工确认！！"
+        exit 1
+    fi
+    echo "主从切换成功！"
+}
+
+# 主函数
+main() {
+    #get_current_roles
+    # 将主节点设置为只读
+    set_master_redonly
+    # 停止从节点，并关闭只读
+    set_slaver_status
+    # 获取原从节点的最新日志以及偏移量
+    get_old_slaver_status 
+    # 修改原主节点为从节点
+    configure_slave
+    # 检查切换后的状态
+    check_replication_status
+}
+
+main