How to stop docker under Linux

Question

My version of OS Ubuntu 16 04  I want to stop docker  so I run in the terminal   sudo systemctl stop docker   But this commands doesn t help me   gridsim1103    ps ax   grep docker  11347          Sl     0 00 containerd-shim 487e3784f983274131d37bde1641db657e76e41bdd056f43ef4ad5adc1bfc518  var run docker libcontainerd 487e3784f983274131d37bde1641db657e76e41bdd056f43ef4ad5adc1bfc518 runc 14299 pts 2    S      0 00 grep --color auto docker 29914          S      0 00 sudo dockerd -H gridsim1103 2376 29915          Sl     4 45 dockerd -H gridsim1103 2376 29922          Ssl    0 24 containerd -l unix    var run docker libcontainerd docker-containerd sock --shim containerd-shim --metrics-interval 0 --start-timeout 2m --state-dir  var run docker libcontainerd containerd --runtime runc 30107          Sl     1 01  usr bin docker-proxy -proto tcp -host-ip 188 184 80 77 -host-port 8500 -container-ip 192 17 0 2 -container-port 8500 30139          Sl     0 00  usr bin docker-proxy -proto tcp -host-ip 188 184 80 77 -host-port 8400 -container-ip 192 17 0 2 -container-port 8400   Version of docker server is   Server   Version       1 12 1  API version   1 24  minimum version    Go version    go1 6 2  Git commit    23cf638  Built         Tue  27 Sep 2016 12 25 38  1300  OS Arch       linux amd64  Experimental  false   I also unsuccessfully tried    sudo service docker stop

User · Accepted Answer

The output of ps aux looks like you did not start docker through systemd systemctl   It looks like you started it with   sudo dockerd -H gridsim1103 2376   When you try to stop it with systemctl  nothing should happen as the resulting dockerd process is not controlled by systemd  So the behavior you see is expected   The correct way to start docker is to use systemd systemctl   systemctl enable docker systemctl start docker   After this  docker should start on system start   EDIT  As you already have the docker process running  simply kill it by pressing CTRL C on the terminal you started it  Or send a kill signal to the process

User · Answer

if you have no systemctl and started the docker daemon by  sudo service docker start  you can stop it by  sudo service docker stop

User · Answer

In my case  it was neither systemd nor a cron job  but it was snap  So I had to run   sudo snap stop docker sudo snap remove docker       and the last command actually never ended  I don t know why  this snap thing is really a pain  So I also ran   sudo apt purge snap    -

[docker] How to stop docker under Linux

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