docker报错处理： Failed to start Docker Application Container Engine.

今天发现docker起不来了，看了下docker状态，发现这个报错

[root@localhost multi-user.target.wants]# 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: start-limit) since Fri 2021-04-23 20:40:26 EDT; 21s ago

    Docs: https://docs.docker.com

  Process: 2423 ExecStart=/usr/bin/dockerd (code=exited, status=1/FAILURE)

Main PID: 2423 (code=exited, status=1/FAILURE)

Apr 23 20:40:25 localhost.localdomain systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE

Apr 23 20:40:25 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.

Apr 23 20:40:25 localhost.localdomain systemd[1]: Unit docker.service entered failed state.

Apr 23 20:40:25 localhost.localdomain systemd[1]: docker.service failed.

Apr 23 20:40:26 localhost.localdomain systemd[1]: docker.service holdoff time over, scheduling restart.

Apr 23 20:40:26 localhost.localdomain systemd[1]: start request repeated too quickly for docker.service

Apr 23 20:40:26 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.

Apr 23 20:40:26 localhost.localdomain systemd[1]: Unit docker.service entered failed state.

Apr 23 20:40:26 localhost.localdomain systemd[1]: docker.service failed.

报错如下：

解决报错：

1.你安装了docker，发现这个报错，先使用systemctl   start  docker.service把docker服务搞起来，之后才能restart

2.修改配置文件/etc/docker/daemon.json，要注意格式缩进可以，但是不能出现空格

格式如下：

{

        "registry-mirrors": ["http://hub-mirror.c.163.com"],

         "data-root": "/haha"

}

3.就是可能你设置的docker  hub加速访问指向的地方，不可以访问了，建议换个地址比如上面的163，阿里云，清华等等