此问题是因为Docker安装后未启动所致,执行以下命令启动docker:
systemctl start docker.service
具体日志如下所示:
[root@localhost ~]# docker ps
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
[root@localhost ~]# systemctl start docker.service
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost ~]#
运行docker ps代码,出现以下的结果则表示成功启动。
[root@localhost ~]# systemctl start docker.service
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost ~]#
以上显示已经成功启动。