Let'S get started by modifying systemd's docker start up script.

Question

Let'S get started by modifying systemd's docker start up script.

Open file /lib/systemd/system/docker.service with your favorite text editor and replace the following line where /new/path/docker is a location of your new chosen docker directory:

FROM:
ExecStart=/usr/bin/docker daemon -H fd://
TO:
ExecStart=/usr/bin/docker daemon -g /new/path/docker -H fd://

When ready stop docker service:

systemctl stop docker

It is important here that you have completely stopped docker daemon. The following linux command will yield no output only if docker service is stopped:

ps aux | grep -i docker | grep -v grep

If no output has been produced by the above command, reload systemd daemon:

systemctl daemon-reload

Once this is done create a new directory you specified above and optionally rsync current docker data to a new directory:

mkdir /new/path/docker
rsync -aqxP /var/lib/docker/ /new/path/docker

At this stage we can safely start docker daemon:

systemctl start docker

Confirm that docker runs within a new data directory:

root 2095 0.2 0.4 664472 36176 ? Ssl 18:14 0:00 /usr/bin/docker daemon -g /new/path/docker -H fd://
root 2100 0.0 0.1 360300 10444 ? Ssl 18:14 0:00 docker-containerd -l /var/run/docker/libcontainerd/docker-containerd.sock --runtime docker-runc```

All done.

#backend #devops #docker #programming #russian

0

13.04.2019

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Konstantin Pogonea · Accepted Answer

Konstantin Pogonea

этот способ давно устаревший

0

13.04.2019

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Let'S get started by modifying systemd's docker start up script.

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