To relocate the Docker root directory, complete the following steps as root or a user with “sudo all” authority:
Stop the Docker services: 停止docker
sudo systemctl stop docker
sudo systemctl stop docker.socket
sudo systemctl stop containerd
Create the necessary directory structure into which to move Docker root by running the following command. This directory structure must reside on a file system with at least 50 GB free disk space. Significantly more disk space might be required depending on your daily ingestion volumes and data retention policy. 建新目录
sudo mkdir -p /new_dir_structure
Move Docker root to the new directory structure: 移动数据
sudo mv /var/lib/docker /new_dir_structure
Edit the file /etc/docker/daemon.json. If the file does not exist, create the file by running the following command:
新建配置文件：
sudo vim /etc/docker/daemon.json
Add the following information to this file: 添加
{
"data-root": "/new_dir_structure/docker"
}
After the /etc/docker/daemon.json file is saved and closed, restart the Docker services: 重启启动docker服务
sudo systemctl start docker
After you run the command, all Docker services through dependency management will restart.
Validate the new Docker root location:
验证：
docker info -f '{{ .DockerRootDir}}'