# Cloudflare搭建DDNS(脚本版)

## 自建DDNS解决动态IP服务器访问问题

* 把域名接入cloudflare
* 获取Global API Key
* 设置用于 DDNS 解析的二级域名，流量不经过CDN(云朵变灰)
* 下载 DDNS 脚本
* 修改 DDNS 脚本并补充相关信息
* 设置定时任务

### 把域名接入cloudflare

打开[cloudflare](https://www.cloudflare.com/zh-cn/)，登陆账号添加网站按照提示操作

### 获取Global API Key

访问 <https://dash.cloudflare.com/profile>在页面下方找到 Global API Key，点击右侧的 View 查看 Key，并保存下来 ，在页面下方找到 Global API Key，点击右侧的 View 查看 Key，并保存下来&#x20;

![1](https://i.loli.net/2019/08/17/bD7yJqoYcAV3riB.png)

### 设置用于 DDNS 解析的二级域名，流量不经过CDN(云朵变灰)

添加一条A记录，例如：hkt.test.com，Proxy status设置成DNS only&#x20;

![2](https://i.loli.net/2019/08/17/DzHSaNEb1ZBU5pC.png)

### 下载 DNNS 脚本

```bash
curl https://raw.githubusercontent.com/aipeach/cloudflare-api-v4-ddns/master/cf-v4-ddns.sh > /root/cf-v4-ddns.sh && chmod +x /root/cf-v4-ddns.sh
```

### 修改 DDNS 脚本并补充相关信息

```
vim cf-v4-ddns.sh
```

```
# incorrect api-key results in E_UNAUTH error
# 填写 Global API Key
CFKEY=

# Username, eg: user@example.com
# 填写 CloudFlare 登陆邮箱
CFUSER=

# Zone name, eg: example.com
# 填写需要用来 DDNS 的一级域名
CFZONE_NAME=

# Hostname to update, eg: homeserver.example.com
# 填写 DDNS 的二级域名(只需填写前缀)
CFRECORD_NAME=
```

### 设置定时任务

首次运行脚本,输出内容会显示当前IP，进入cloudflare查看 确保IP已变更为当前IP

```
./cf-v4-ddns.sh
```

定时任务

```
crontab -e
*/2 * * * * /root/cf-v4-ddns.sh >/dev/null 2>&1

# 如果需要日志，替换上一行代码
*/2 * * * * /root/cf-v4-ddns.sh >> /var/log/cf-ddns.log 2>&1
```


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