# Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。Docker 官方和国内很多云服务商都提供了国内加速器服务。

## 配置加速地址

> Ubuntu 16.04+、Debian 8+、CentOS 7+

创建或修改 `/etc/docker/daemon.json`：

```bash
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "https://1nj0zren.mirror.aliyuncs.com",
        "https://docker.mirrors.ustc.edu.cn",
        "http://f1361db2.m.daocloud.io",
        "https://dockerhub.azk8s.cn"
    ]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
```

## Docker Hub 镜像加速器列表

镜像加速器 | 镜像加速器地址 | 专属加速器[？](# "需登录后获取平台分配的专属加速器") | 其它加速[？](# "支持哪些镜像来源的镜像加速")
--- | --- | --- | --
~~[Docker 中国官方镜像](https://docker-cn.com/registry-mirror)~~ | ~~`https://registry.docker-cn.com`~~ | | ~~Docker Hub~~（[已关闭](https://github.com/docker/docker.github.io/issues/8793)）
[DaoCloud 镜像站](https://daocloud.io/mirror) | `http://f1361db2.m.daocloud.io` | 可登录，系统分配 | Docker Hub
[Azure 中国镜像](https://github.com/Azure/container-service-for-azure-china/blob/master/aks/README.md#22-container-registry-proxy) | `https://dockerhub.azk8s.cn` | | Docker Hub、GCR、Quay
[科大镜像站](https://mirrors.ustc.edu.cn/help/dockerhub.html) | `https://docker.mirrors.ustc.edu.cn` | | Docker Hub、[GCR](https://github.com/ustclug/mirrorrequest/issues/91)、[Quay](https://github.com/ustclug/mirrorrequest/issues/135)
[阿里云](https://cr.console.aliyun.com) | `https://<your_code>.mirror.aliyuncs.com` | 需登录，系统分配 | Docker Hub
[七牛云](https://kirk-enterprise.github.io/hub-docs/#/user-guide/mirror) | `https://reg-mirror.qiniu.com` | | Docker Hub、GCR、Quay
[网易云](https://c.163yun.com/hub) | `https://hub-mirror.c.163.com` | | Docker Hub
[腾讯云](https://cloud.tencent.com/document/product/457/9113) | `https://mirror.ccs.tencentyun.com` | | Docker Hub

## 检查加速器是否生效

命令行执行 `docker info`，如果从结果中看到了如下内容，说明配置成功。

```console
Registry Mirrors:
 [...]
 https://dockerhub.azk8s.cn/
```

## Docker Hub 镜像测速

使用镜像前后，可使用 `time` 统计所花费的总时间。测速前先移除本地的镜像！ 

```console
$ docker rmi node:latest
$ time docker pull node:latest
Pulling repository node
[...]

real   1m14.078s
user   0m0.176s
sys    0m0.120s
```

---

## 参考链接

+ https://docs.docker.com/registry/recipes/mirror/
+ https://github.com/yeasy/docker_practice/blob/master/install/mirror.md
+ https://github.com/moby/moby/blob/d409b05970e686993e343d226fae5b463d872082/docs/articles/registry_mirror.md
+ https://www.fengbohello.top/archives/docker-registry-mirror
+ https://www.ilanni.com/?p=14534