docker error var run docker sock no such file or directory

Question

I am new to docker  I have a shell script that loads data into impala and I want a docker file that runs builds an image and run the container  I am on mac  installed boot2docker and have the DOCKER HOST env set up   bash-3 2  docker info Containers  0 Images  0 Storage Driver  aufs Root Dir   mnt sda1 var lib docker aufs Dirs  0 Execution Driver  native-0 2 Kernel Version  3 15 3-tinycore64 Debug mode  server   true Debug mode  client   false Fds  10 Goroutines  10 EventsListeners  0 Init Path   usr local bin docker Sockets   unix    var run docker sock tcp   0 0 0 0 2375    I am trying to just installed a pre-built image using   sudo docker pull busybox   I get this error   sudo docker pull busybox 2014 08 18 17 56 19 Post http    var run docker sock images create fromImage busybox amp tag   dial unix  var run docker sock  no such file or directory  Is something wrong with my docker setup     When I do a docker pull busybox  It pulls the image and download is complete   bash-3 2  docker pull busybox Pulling repository busybox a9eb17255234  Download complete  fd5373b3d938  Download complete  d200959a3e91  Download complete  37fca75d01ff  Download complete  511136ea3c5a  Download complete  42eed7f1bf2a  Download complete  c120b7cab0b0  Download complete  f06b02872d52  Download complete  120e218dd395  Download complete  1f5049b3536e  Download complete  bash-3 2  docker run busybox  bin echo Hello Doctor Hello Doctor   Am I missing something

User · Answer

On my MAC when I start boot2docker-vm on the terminal using


boot2docker start

I see the following


To connect the Docker client to the Docker daemon, please set:
    export DOCKER_CERT_PATH=
    export DOCKER_TLS_VERIFY=1
    export DOCKER_HOST=tcp://:2376

After setting these environment variables I was able to run the build without the problem.

Update [2016-04-28] If you are using a the recent versions of docker you can do

eval $(docker-machine env) will set the environment

(docker-machine env will print the export statements)

User · Answer

You can quickly setup your environment using shellinit  At your command prompt execute     boot2docker shellinit      That will populate and export the environment variables and initialize other features

User · Answer

To setup your environment and to keep it for the future sessions you can do   echo  export DOCKER HOST  tcp     boot2docker ip 2 gt  dev null  2375     gt  gt     bashrc   Then  source    bashrc  And your environment will be setup in every session

User · Answer

In Linux  first of all execute sudo service docker start in terminal

User · Answer

If you re using CentOS 7  and you ve installed Docker via yum  don t forget to run     sudo systemctl start docker   sudo systemctl enable docker   This will start the server  as well as re-start it automatically on boot

User · Answer

I also got this error  Though  I did not use boot2docker but just installed  plain  docker on Ubuntu  see https   docs docker com installation ubuntulinux     I got the error   dial unix  var run docker sock  no such file or directory  Are you trying to connect to a TLS-enabled daemon without TLS    because the docker daemon was not running  yet   On Ubuntu  you need to start the service   sudo service docker start   See also http   blog arungupta me resolve-dial-unix-docker-sock-error-techtip64

User · Answer

You don t need to run any docker commands as sudo when you re using boot2docker as every command passed into the boot2docker VM runs as root by default   You re seeing the error when you re running as sudo because sudo doesn t have the DOCKER HOST env set  only your user does   You can confirm this by doing a     env   Then a    sudo env   And looking for DOCKER HOST in each output   As for having a docker file that runs your script  something like this might work for you   Dockerfile  FROM busybox    Copy your script into the docker image ADD  path to your script sh  usr local bin script sh    Run your script CMD  usr local bin script sh   Then you can run   docker build -t your-image-name your-tag     This will build your docker image  which you can see by doing a   docker images   Then  to run your container  you can do a   docker run your-image-name your-tag   This run command will start a container from the image you created with your Dockerfile and your build command and then it will finish once your script sh has finished executing

User · Answer

For boot2docker on Windows  after seeing   FATA 0000  Get http    var run docker sock v1 18 version   dial unix  var run docker sock  no such file or directory    Are you trying to connect to a TLS-enabled daemon without TLS    All I did was   boot2docker start boot2docker shellinit   That generated   export DOCKER CERT PATH C  Users vonc  boot2docker certs boot2docker-vm export DOCKER TLS VERIFY 1 export DOCKER HOST tcp   192 168 59 103 2376   Finally   boot2docker ssh   And docker works again

User · Answer

The first  var run docker sock refers to the same path in your boot2docker virtual machine  Correcly write for windows  var run docker sock

User · Answer

You  maybe the not the OP  but someone may have a directory called  var run docker sock  already due to how many times you hack and slash to get things right with docker  especially noobs   Delete that directory and try again    This helped me on my way to getting it to work on Centos 7

User · Answer

docker pull will fail if docker service is not running  Make sure it is running by       ps aux   grep docker root     18745  1 7  0 9 284104 13976     Ssl  21 19   0 01  usr bin docker -d   If it is not running  you can start it by   sudo service docker start  For Ubuntu 15 and above use  sudo systemctl start docker

[docker] docker error: /var/run/docker.sock: no such file or directory

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