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ohjho/change_docker_image_directory.md

Created January 19, 2021 04:51
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How to Change Docker's Image Installation Directory
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change_docker_image_directory.md

0. [optional] prune unused Docker Objects

To remove unused images, docker image prune -a, and containers , docker container prune

1. Stop Docker

sudo service docker stop then make sure docker is stop with ps aux| grep docker

2. Backup current docker directory

sudo cp -r /var/lib/docker /your/storage/dir

3. Update Docker Configs per this post

Ubuntu/Debian: edit your /etc/default/docker file with the -g option: DOCKER_OPTS="-dns 8.8.8.8 -dns 8.8.4.4 -g /mnt"

Fedora/Centos: edit /etc/sysconfig/docker, and add the -g option in the other_args variable: ex. other_args="-g /your/storage/dir". If there’s more than one option, make sure you enclose them in " ". After a restart, (service docker restart) Docker should use the new directory.

4. Restart Docker

sudo service docker restart

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