Why is docker image eating up my disk space that is not used by docker

Question

I have setup docker and I have used completely different block device to store docker\'s system data:

[root@blink1 /]# cat /etc/sysconfig/docker
# /etc/sysc         


        

Answer 1

Yes, Docker use /var/lib/docker folder to store the layers. There are ways to reclaim the space and move the storage to some other directory.

You can mount a bigger disk space and move the content of /var/lib/docker to the new mount location and make sym link.

There is detail explanation on how to do above task.

http://www.scmtechblog.net/2016/06/clean-up-docker-images-from-local-to.html

You can remove the intermediate layers too.

https://github.com/vishalvsh1/docker-image-cleanup