配置docker使用overlay2存儲

Check current docker version

docker --version

Check current docker storage-driver

docker info |grep -i storage

Check current Docker directory ftype (default : /var/lib/docker)

xfs_info /home/docker |grep ftype=1

Check yum-plugin-ovl installed

yum install yum-plugin-ovl

Stop docker

systemctl stop docker

Add overlay2 to daemon.json

touch /etc/docker/daemon.json
vim /etc/docker/daemon.json

{
"storage-driver": "overlay2",
"storage-opts": [
"overlay2.override_kernel_check=true"
]
}

BackUp Current Docker directory (default : /var/lib/docker)

cd /home/docker
mkdir /tmp/BACKUP
mv * /tmp/BACKUP/

Start docker

systemctl start docker

Check new docker storage-driver

docker info |grep -i storage