问题
Docker folder /var/lib/docker/aufs/diff grows too much and I would like to move it on an other partition. Is there a way to configure Docker to use another location for this foder?
回答1:
There's an easy way to get the docker daemon to handle this for you.
stop docker
$ service docker stop
add this line to /etc/default/docker
# Use DOCKER_OPTS to modify the daemon startup options.
DOCKER_OPTS="-g /<new destination>/docker/"
start docker
$ service docker start
verify the docker files and folders are created in the new destination
remove /var/lib/docker
/var/lib$ sudo rm -rf docker
回答2:
There is an answer on this thread, basically a ln -s, after some preparatory work
docker ps -q | xargs docker kill
stop docker
cd /var/lib/docker/devicemapper/mnt
umount ./*
mv /var/lib/docker $dest
ln -s $dest /var/lib/docker
start docker
https://github.com/docker/docker/issues/3127#issuecomment-30095645
来源：https://stackoverflow.com/questions/26711103/docker-changing-var-lib-docker-aufs-diff-location