Symtoms

disk space is almost full

Cause

sudo du -h / | grep '[0-9\,]\+G'

/var/lib has the most biggest size. seems like docker data cause this.

Solution

• remove unused docker related data ``` docker system prune -a -f

Total reclaimed space: 4.922GB

- change docker data dir into big size disk

echo -n “enter new docker data dir path: “ read dirpath sudo lsof | grep /var/lib/docker sudo systemctl stop docker sudo mv /var/lib/docker $dirpath sudo ln -s $dirpath/docker /var/lib/docker sudo ls -al /var/lib/docker sudo lsof | grep /var/lib/docker ```