docker 权限问题 Got permission denied while trying to connect to the Docker daemon socket at 。。。

非root用户运行docker命令报如下错误
说明没有权限

haima@haima-PC:/usr/local/docker/docker_compose_efk$ docker ps -a
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json?all=1: dial unix /var/run/docker.sock: connect: permission denied

通过将用户添加到docker用户组可以将sudo去掉，命令如下

sudo groupadd docker #添加docker用户组

sudo gpasswd -a $USER docker #将登陆用户加入到docker用户组中

newgrp docker #更新用户组

如果报如下错误:

[haima@HmEduCentos01 ~]$ sudo gpasswd -a $USER docker
[sudo] password for haima: 
haima 不在 sudoers 文件中。此事将被报告。

参考下面连接解决

https://blog.csdn.net/hjfcgt123/article/details/85863541