一、问题描述
docker默认安装后存储在/var/lib/docker目录下，如何修改docker镜像的默认存储路径，下面分享一下其过程
1.1 查看服务配置文件位置
systemctl show --property=FragmentPath docker
1.2 编辑文件内容
修改后的存储路径为/opt/docker
vim /usr/lib/systemd/system/docker.service [Unit] Description=Docker Application Container Engine Documentation=http://docs.docker.com After=network.target Wants=docker-storage-setup.service Requires=docker-cleanup.timer [Service] Type=notify NotifyAccess=all1.3 重新加载配置文件,重启docker服务 1.4 验证效果 EnvironmentFile=-/etc/sysconfig/docker EnvironmentFile=-/etc/sysconfig/docker-storage EnvironmentFile=-/etc/sysconfig/docker-network Environment=GOTRACEBACK=crash Environment=DOCKER_HTTP_HOST_COMPAT=1 Environment=PATH=/usr/libexec/docker:/usr/bin:/usr/sbin ExecStart=/usr/bin/dockerd-current -g /opt/docker --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=1048576 LimitNPROC=1048576 LimitCORE=infinity TimeoutStartSec=0 Restart=on-abnormal MountFlags=slave [Install] WantedBy=multi-user.target
1.3 重载docker服务
sudo systemctl daemon-reload sudo systemctl restart docker