centos动态域名解析

#!/bin/bash

# 配置参数
DOMAIN="yourdomain.com"
USERNAME="your_ddns_username"
PASSWORD="your_ddns_password"
CHECK_INTERVAL=3600  # 检查间隔时间（秒）

# 获取当前公网 IP
CURRENT_IP=$(curl -s ifconfig.me)

# 检查 IP 是否变化
if [ -f /tmp/last_ip ]; then
    LAST_IP=$(cat /tmp/last_ip)
    if [ "$CURRENT_IP" != "$LAST_IP" ]; then
        echo "IP address changed from $LAST_IP to $CURRENT_IP"
        # 更新 DNS 记录
        curl -X POST "https://dnsapi.cn/Record.Update" -d "login_username=$USERNAME&login_password=$PASSWORD&format=json&domain=$DOMAIN&record_id=your_record_id&record_line=默认&record_value=$CURRENT_IP&record_type=A"
        echo $CURRENT_IP > /tmp/last_ip
    fi
else
    echo "First run, setting IP to $CURRENT_IP"
    echo $CURRENT_IP > /tmp/last_ip
fi

# 等待下一次检查
sleep $CHECK_INTERVAL

#!/bin/bash

# 配置参数
USERNAME="your_noip_username"
PASSWORD="your_noip_password"
HOST="your_host"
DOMAIN="yourdomain.com"

# 获取当前公网 IP
CURRENT_IP=$(curl -s ifconfig.me)

# 更新 DNS 记录
curl -X POST "https://dynupdate.no-ip.com/nic/update?hostname=$HOST.$DOMAIN&myip=$CURRENT_IP" -u $USERNAME:$PASSWORD