Change Default Docker Image Download Location in Fedora 23

Question

Can anyone suggest how to change docker image download location?

right now it is stored in /var/lib/docker (500mb only free space).

I referred below links

How to change the docker image installation directory?

https://forums.docker.com/t/how-do-i-change-the-docker-image-installation-directory/1169

but it does not match with my configuration eg. /etc/sysconfig/docker I could not find this file. I followed this link to install (install with dnf method). I am trying to find where it is get install by using linux cli command find / -name -type f "docker" it list /usr/bin/docker. I could not able to open this file in editor it seem like shell script. open that file using VI editor but the file full of junk characters.

Thanks

Answer 1

There is one tricky way to do this.

What you need is just move your data and symlink it to new location without any config changes.

1. service docker stop
2. mv /var/lib/docker /mnt/hugest/disk/ever
3. ln -s /mnt/hugest/disk/ever /var/lib/docker
4. service docker start

It should work just as before.

Answer 2

I change the default directory using docker daemon command

1) stop docker

systemctl  stop docker

2) move docker images as per your required folder

mv /var/lib/docker /u01/docker

3) start docker daemon with new mount point.

docker daemon -g /u01/docker/

4) open new terminal tab, check the docker images

docker images

note: my case docker version 1.11.2, os:fedora23 64 bit