启动docker报错Failed to listen on Docker Socket for the API.

1.启动时报错查看日志发现

journalctl -xe

Failed to listen on Docker Socket for the API.

查找socket这个配置文件，修改如下(路径地址不唯一，请根据查到地址为准)

find / -name docker.socket
/etc/systemd/system/sockets.target.wants/docker.socket
/lib/systemd/system# vim docker.socket 

[Unit]
Description=Docker Socket for the API

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=root  # 这里原来是docker改成root即可，保存退出

[Install]
WantedBy=sockets.target

systemctl enable docker.service
systemctl enable docker.socket

service docker start

再次重启docker，OK