Docker pull 时报错：Get https://registry-1.docker.io/v2/library/mysql: net/http: TLS handshake timeout

> 本文由 [简悦 SimpRead](http://ksria.com/simpread/) 转码， 原文地址 [blog.csdn.net](https://blog.csdn.net/qq_41999034/article/details/104282787)

今天用 [docker](https://so.csdn.net/so/search?q=docker&spm=1001.2101.3001.7020) pull 镜像时提示以下错误

![](https://img-blog.csdnimg.cn/20200212191823279.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTk5MDM0,size_16,color_FFFFFF,t_70)

```
Trying to pull repository docker.io/library/mysql ... 
Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting heade
rs)
```

**错误原因** ：**docker 默认镜像源为国外镜像源，下载速度过慢导致连接失败**

**解决办法**：**更换国内镜像源**

**以 SmarTTy 客户端为操作示例：**  
点击左上角 **file/open a remote file**，寻找 **etc/docker/daemon.json** 文件并打开，其他客户端操作也类似，只要找到 **daemon.json** 文件即可，没有该文件则在以上路径自行创建

![](https://img-blog.csdnimg.cn/20200212184135221.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTk5MDM0,size_16,color_FFFFFF,t_70)

将以下代码复制进去并保存关闭

```
{
	"registry-mirrors": ["https://registry.docker-cn.com","https://pee6w651.mirror.aliyuncs.com"]
}
```

![](https://img-blog.csdnimg.cn/20200212192601806.png)

重启 docker 即可进行 docker pull 镜像下载操作

```
[root@localhost ~]# systemctl restart docker   //重启docker
```

下载成功

![](https://img-blog.csdnimg.cn/20200212190616885.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTk5MDM0,size_16,color_FFFFFF,t_70)