linux operation and maintenance, road infrastructure -Docker modify the local mirrored storage location

1, View Docker default directory to store data

[root@k8s-node1 tools]# docker info | grep "Docker Root Dir"
WARNING: API is accessible on http://127.0.0.1:4243 without encryption.
         Access to the remote API is equivalent to root access on the host. Refer
         to the 'Docker daemon attack surface' section in the documentation for
         more information: https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface
 Docker Root Dir: /var/lib/docker

2. Stop Docker service

 systemctl stop docker

3, the mobile Docker data directory to the specified partition

[@ K8S the root-node1 App] # Music Videos / var / lib / Docker / app / Data / Docker     # where / app network storage to mount the NAS 
[@ K8S the root -node1 App] -s LN # / app / Data / Docker / var / lib / Docke   # soft link to the original directory

4, start Docker view storage directory service

systemctl start docker

[root@k8s-node1 ~]# docker info|grep "Docker Root Dir"
WARNING: API is accessible on http://127.0.0.1:4243 without encryption.
         Access to the remote API is equivalent to root access on the host. Refer
         to the 'Docker daemon attack surface' section in the documentation for
         more information: https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface
 Docker Root Dir: /app/data/docker