“您的docker守护程序是否正常运行？”Linux上的docker hello world教程出现问题

Question

I am running the installation tutorial for Docker on Linux - Ubuntu 14.04

Going step by step through the tutorial, I get the following error message:

docker run hello-world

Post http:///var/run/docker.sock/v1.20/containers/create: dial unix /var/run/docker.sock: no such file or directory.
* Are you trying to connect to a TLS-enabled daemon without TLS?
* Is your docker daemon up and running?

The similar question docker error: /var/run/docker.sock: no such file or directory refers to boot2docker which I am not using

Answer 1

Had the same issue, solved:

docker-machine start default
eval "$(docker-machine env default)"

Answer 2

I got the same problem today. you just have to start the service.

sudo service docker start

It works on linux. I don't know if it works on mac

Answer 3

Check the ownership of the file /var/run/docker.sock :

ls -l /var/run/docker.sock
srw-rw----. 1 root root 0 Nov 18 16:17 /var/run/docker.sock

Change the group settings to dockerroot :

sudo chown root:dockerroot /var/run/docker.sock

ls -l /var/run/docker.sock
srw-rw----. 1 root dockerroot 0 Nov 18 16:17 /var/run/docker.sock

Then it should work.

Answer 4

I had the same problem running docker on ubuntu 14.04.

Trying running Docker as root: sudo docker run hello-world

Type in password when prompted.

Answer 5

Both the solution here are tried and tested on linux only
Solution 1:
I was Having the same issue, Login with root privilege solved my problem
Solution 2:
The solution here works only with root user because root user has full access to linux socket similarly docker group has full access to linux socket. if you want to run this with non root user you need to add user to docker group, you can do this with following command -

sudo usermod -aG docker $(whoami)

Now logout and login you should be able to work with non-root user :)

Answer 6

After getting stuck I turned off the computer and went on a road trip. One Monday I turned the computer on and docker run hello-world runs just as the tutorial indicated.

Answer 7

Had exactly the same problem on Windows 8.1 Answer was to open the Oracle VM Virtual Box, right click on the default instance and then click on "Show" icon. Then saw BootLocker logo. Then back to the Docker Quickstarter "> whale" icon, double click and ascii docker appears.

Answer 8

In linux, after installation, though docker version was giving a proper output, docker run hello-world was not working because the service was not up.

I tried service docker restart in SLES 12 SP3 Linux machine. It worked. So probably your docker daemon needs a restart.

Try the same command service docker restart and it should work.

Answer 9

So, is the Docker daemon running? What troubleshooting did you already do?

The tutorial doesn't mention starting Docker or adding yourself to the docker group so that you can run Docker command without sudo (although, this should have been mentioned when you installed Docker). You need to do both of these things first.