Docker配置daocloud加速器

　　首先注册daocloud网站的账号(免费的！！！),并登陆自己的账号，并在这里获取自己的daocloud加速器配置脚本。

　　获取到自己的daocloud加速器配置脚本之后只需要在已安装Docker服务的服务器执行该脚本即可获得加速服务。

　　在使用daocloud官网提供的脚本配置加速器之后，重启docker服务可能会出现如下报错，导致docker服务不能启动：

[root@docker ~]# systemctl restart docker
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
[root@docker ~]#

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　　详细信息如下：

[root@docker ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2017-08-30 19:11:39 CST; 2min 14s ago
     Docs: http://docs.docker.com
  Process: 5097 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=1/FAILURE)
 Main PID: 5097 (code=exited, status=1/FAILURE)

Aug 30 19:11:39 docker systemd[1]: Starting Docker Application Container Engine...
Aug 30 19:11:39 docker dockerd-current[5097]: time="2017-08-30T19:11:39+08:00" level=fatal msg="unable to configure the Docker daemon with file /etc/...string\n"
Aug 30 19:11:39 docker systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Aug 30 19:11:39 docker systemd[1]: Failed to start Docker Application Container Engine.
Aug 30 19:11:39 docker systemd[1]: Unit docker.service entered failed state.
Aug 30 19:11:39 docker systemd[1]: docker.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
[root@docker ~]#

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　　解决办法：

　　可能是由于daocloud官方提供的脚本问题，导致/etc/docker/daemon.json中的json语法错误，只需要将文件中"{"registry-mirrors": ["http://271d509e.m.daocloud.io"],}"最后的","删除之后保存退出即可正常启动docker服务。

为了方便使用，本文中设置了超链接，读者只需要点击对应的超链接即可。

来源：https://www.cnblogs.com/jie-fang/p/7207642.html

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Docker

加速器