[Docker] service docker start Fail

開啟docker時 遇到

Even ➜  ~ sudo service docker start

Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xe" for details.

Even ➜  ~ systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; disabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Mon 2020-04-20 14:58:36 CST; 34s ago
     Docs: https://docs.docker.com
  Process: 3663 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=ex
 Main PID: 3663 (code=exited, status=1/FAILURE)

不管怎麼 docker stop, restart or reboot 都沒有用

查資料發現需要將 /etc/docker/daemon.json刪除
daemon.json 可以對docker engine作配置 有興趣可以再查查資料

Even ➜  ~ rm /etc/docker/daemon.json
Even ➜  ~ sudo service docker start
Even ➜  ~ systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; disabled; vendor preset: enabled)
   Active: active (running) since Mon 2020-04-20 16:33:20 CST; 5s ago
     Docs: https://docs.docker.com
 Main PID: 4987 (dockerd)
    Tasks: 19
   CGroup: /system.slice/docker.service
           └─4987 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock