Cannot connect to the Docker daemon at unix var run docker sock Is the docker daemon running

Question

I have applied every solution available on internet but still I cannot run Docker   I want to use Scrapy Splash on my server   Here is history of commands I ran   docker run -p 8050 8050 scrapinghub splash sudo docker run -p 8050 8050 scrapinghub splash sudo usermod -aG docker   whoami  sudo docker run -p 8050 8050 scrapinghub splash newgrp docker sudo docker run -p 8050 8050 scrapinghub splash reboot sudo docker run -p 8050 8050 scrapinghub splash docker run -p 8050 8050 scrapinghub splash   You can see I tried to restart my server as well  but it didnt help   see output of ps -aux   grep docker  root mani  var www html  ps aux   grep docker root      8524  0 0  0 8 127904 13964          Ssl  17 21   0 00  usr bin dockerd --raw-logs root      8534  0 0  0 3  90588  5012          Ssl  17 21   0 00 docker-containerd -l unix    var run docker libcontainerd docker-containerd sock --metrics-interval 0 --start-timeout 2m --state-dir  var run docker libcontainerd containerd --shim docker-containerd-shim --runtime docker-runc root      8543  0 0  0 0   8812   764 pts 1    S    17 21   0 00 grep --color auto docker root     16356  0 0  0 0  17200   964 pts 1    S    17 14   0 00 newgrp docker root     20080  0 0  0 0  17200   964 pts 1    S    17 06   0 00 newgrp docker root     30221  0 0  0 0  17200   964 pts 1    S    17 09   0 00 newgrp docker

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I was trying to run docker just installed  in an instance of AWS when the message appears  I just write sudo service docker start and works fine for me   Also see AWS with Docker

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For everyone who is having problems with Docker at the time of installation  An error pointing to a failure in the docker service  do the commands below    sudo apt update    sudo apt install apt-transport-https ca-certificates curl gnupg2 software-properties-common    curl -fsSL https   download docker com linux debian gpg   sudo apt-key add -    sudo add-apt-repository  quot deb  arch amd64  https   download docker com linux debian   lsb release -cs  stable quot     sudo apt update    apt-cache policy docker-ce    sudo apt install docker-ce

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This exception comes when the service of docker is not running or the logged in user dont have the permission to access docker and generally it comes in RedHat  Using below command should resolve the issue                 sudo service docker start

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I had this problem after closing docker will pulling a container docker pull mongo  At first I was getting weird errors so I purged docker sudo apt-get purge docker io and reinstalled sudo apt-get install docker io    all of this did nothing  I couldn t even run the hello-world container  The correct fix for me at least was   systemctl unmask docker service systemctl unmask docker socket systemctl start docker service   After this I could pull mongo and run hello world   Cheers

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Use docker start  lt your container name gt   Then connect to database by using  mssql -u  lt yourUsername gt  -p  lt yourPassword gt   If you get an error in the first step then the docker is running and go with the second step   Note  I use Mac as my primary OS and this might be the same answer for Unix based OSs  If not  Sorry in advance

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Just Run  sudo dockerd   dockerd is the daemon service for docker containers  because it is not running in background we re not able to take any actions related to the service  which needs be restarted

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I guess if you are using WSL with GUI  then you could just try sudo  etc init d docker start

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Just restarting the system worked for me  It might be a temporary issue

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I installed docker from snap repository  So I also had to start from snap  running Ubuntu   sudo snap start docker Otherwise you can also install it from their repositories

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It s worked for me  sudo systemctl unmask docker sudo systemctl start docker

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It could be related to no disk space left on the hard drive  Make sure you have space left on the device  Docker can t start up if there isn t any space left

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here s the solution which works for me on Linux  systemctl start docker

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First  try with sudo  as the current user may not have access permissions to communicate to docker daemon i e   var run docker sock  If its still not working  then  after the installation  simply stop the docker daemon as     sudo service docker stop   And  run the following command to start the daemon in background     sudo nohup docker daemon -H tcp   0 0 0 0 2375 -H unix    var run docker sock   To make working with Docker easier  you should add your username to  the Docker users group  Adding a user to the group can be done with the  command below    sudo usermod -aG docker  USER   Also  this step is mention at official documentation of docker Post-installation steps for Linux  https   docs docker com engine installation linux linux-postinstall    The Ubuntu 16 04 users can follow these steps   Inside file  lib systemd system docker service change      ExecStart  usr bin dockerd fd    with     ExecStart  usr bin dockerd -H tcp   0 0 0 0 2375  Inside file  etc init d docker change   DOCKER OPTS  with DOCKER OPTS  -H     tcp   0 0 0 0 2375    and then restart your machine  And  start playing with docker

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In root mode  run the command systemctl start docker And afterwards  you can check the status by running systemctl status docker

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This issue can be resolved permanently by running  1  systemctl enable docker 2  service docker start

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You can try out this   systemctl start docker   It worked fine for me   P S   after if there is commands that you can t do without sudo  try this   gpasswd -a  USER docker

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This usually happened if you haven t stopped docker probably    To resolve  service docker stop cd  var run docker libcontainerd rm -rf containerd   rm -f docker-containerd pid service docker start   then  docker run      to download your image and start the container as usual

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I just hit this after doing a fresh install of DOCKER from the main docs  The problem for me was that immediately after the install  the service is not running   These commands will help you to make sure docker is up and running for your run command to find it      sudo service --status-all    sudo service docker start   sudo service docker start

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I faced same issue on Linux when I installed docker using yum  yum install docker    Resolution  download docker binary from official site  docker install  unpack and follow the installation steps

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I had the same problem for gitlab CI running node lts image     I just restarted the docker daemon and restart the container  it worked for me

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export DOCKER HOST tcp   localhost 2375 is perfect for anyone who doesn t have sudo access and the user doesn t have access to unix    var run docker sock

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For me the solution was to simply make sure I had installed the correct Docker package  For example  for Ubuntu the depreciated packages are    docker docker-engine docker io containerd runc   For installation check https   docs docker com  Instructions are provided for Ubuntu  CentOS  Debian and Fedora at the time of writing

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I just simply forget running the Docker Desktop in my mac  after running Docker Desktop  you will be good to go

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I m running on root and tried below  it worked   service docker start  export DOCKER HOST  tcp   0 0 0 0 2375

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I also received the error message below  after installing the docker and running  docker run hello-world  Cannot connect to the Docker daemon at unix   var run docker sock  Is the docker daemon running  Here s a solution  what worked for me  Environment  Windows 10  Don t forget to enable on windows  Settings gt  Update and Security gt  Developer mode  Ubuntu 18 04 LTS Docker Desktop version 2 3 0 2  45183   Enable in Docker Desktop  Expose daemon on tcp     localhost  2375 without TLS Docker Desktop must also be running  connected to Docker Hub     just log in     After installing ubuntu  update the repository sudo apt-get update  To use a repository over HTTPS sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common  Add the official Docker GPG key  curl -fsSL https   download docker com linux ubuntu gpg   sudo apt-key add -  Make sure you now have the key with the fingerprint sudo apt-key fingerprint 0EBFCD88  Update the repository sudo apt-get update  Update the docker repository sudo add-apt-repository  quot deb  arch   amd64  https   download docker com linux ubuntu    lsb release -cs  stable  quot   Update the repository again sudo apt-get update  Command to install the docker in version  5  18 09 9   3-0   ubuntu-bionic sudo apt-get install docker-ce   5  18 09 9   3-0   ubuntu-bionic docker-ce-cli   5  18 09 9   3-0   ubuntu-bionic containerd io  Command to set the DOCKER HOST export DOCKER HOST  quot tcp   0 0 0 0 2375 quot   Note  put the command above in your profile to start with the ubunto ex  echo  quot export DOCKER HOST  quot tcp   0 0 0 0 2375 quot  quot   gt  gt     bashrc Add user to the docker group sudo usermod -aG docker  USER  Restart ubuntu  Close and open the ubuntu window again  or run  source    bashrc  Testing the installation  DO NOT use more sudo before docker commands  it will give an error   the user  quot root quot  has already been included in the docker group  docker run hello-world  The message below should be displayed Hello from Docker  This message shows that your installation appears to be working correctly  Note  if it fails  run the command again  export DOCKER HOST  quot tcp   0 0 0 0 2375 quot   Reference  https   docs docker com engine install ubuntu  Session  INSTALL DOCKER ENGINE  For other versions of the docker that can be installed with ubuntu  see the repository using the command below  apt-cache madison docker-ce Then install the desired version of the docker  sudo apt-get install docker-ce    lt VERSION STRING gt  docker-ce-cli    lt VERSION STRING gt  containerd io

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You can get this error if docker doesn t shut down cleanly  The following answer is for the docker snap package  Run snap logs docker and look for the following  Error starting daemon  pid file found  ensure docker is not running or delete  var snap docker 179 run docker pid  Deleting that file and restarting docker worked for me  rm  var snap docker  lt your-version-number gt  run docker pid snap stop docker snap start docker  Make sure to replace      lt your-version-number gt   with the appropriate version number

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use this in ubuntu  export DOCKER HOST tcp   localhost 2375

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Make sure information in this path  etc docker daemon json       registry-mirror          https   registry docker-cn com          insecure-registries          192 168 199 100 5000          delete     insecure-registries          192 168 199 100 5000      and runs well enter image description here

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This works fine for me    service docker restart

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Easy way to fix this issue  try this systemctl start docker systemctl enable docker systemctl restart docker

User · Answer

This worked for me  It might just work for you if you are using Ubuntu 16 or 18  14 may also work   Easy to give a try   Go to Ubuntu Software  type in Docker  Uninstall docker  108 mb  if it is preinstalled there  Install docker Now run the commands and see if the same error comes  The error      After doing the above steps    As you can see  it worked

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None of the current answers worked for my version of this error  I m using the desktop version of Ubuntu 18  The following two commands fixed the issue   sudo snap connect docker home  home  sudo snap start docker

[linux] Cannot connect to the Docker daemon at unix:/var/run/docker.sock. Is the docker daemon running?

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