解决方法：web
查看是否存在进程：docker
$ ps aux |grep docker
中止进程ruby
$sudo service docker stop
重启docker：bash
$dockerd
或者:svg
If you see an error such as the following, your Docker client may be configured to connect to a Docker daemon on a different host, and that host may not be reachable.this
Cannot connect to the Docker daemon. Is ‘docker daemon’ running on this host?
To see which host your client is configured to connect to, check the value of the DOCKER_HOST variable in your environment.spa
$ env | grep DOCKER_HOST
If this command returns a value, the Docker client is set to connect to a Docker daemon running on that host. If it is unset, the Docker client is set to connect to the Docker daemon running on the local host. If it is set in error, use the following command to unset it:code
$ unset DOCKER_HOST
You may need to edit your environment in files such as ~/.bashrc or ~/.profile to prevent the DOCKER_HOST variable from being set erroneously.xml
If DOCKER_HOST is set as intended, verify that the Docker daemon is running on the remote host and that a firewall or network outage is not preventing you from connecting.进程