1.首先停掉docker
# systemctl stop docker
2.修改系统服务的docker启动文件
[root@ecs docker]# vi /usr/lib/systemd/system/docker.service [Unit] Description=Docker Application Container Engine Documentation=http://docs.docker.com After=network.target rhel-push-plugin.socket registries.service Wants=docker-storage-setup.service Requires=docker-cleanup.timer [Service] Type=notify NotifyAccess=all EnvironmentFile=-/run/containers/registries.conf 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 /datas/storage/docker #添加你自己的新的存储镜像的目录 --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 --init-path=/usr/libexec/docker/docker-init-current --seccomp-profile=/etc/docker/seccomp.json $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=1048576 LimitNPROC=1048576 LimitCORE=infinity TimeoutStartSec=0 Restart=on-abnormal KillMode=process [Install] WantedBy=multi-user.target
3.重新加载守护进程
# systemctl daemon-reload
4.重启docker服务
systemctl start docker
5.验证结果
（1）
[root@ecs]# docker info Containers: 0 Running: 0 Paused: 0 Stopped: 0 Images: 0 Server Version: 1.13.1 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: true Logging Driver: journald Cgroup Driver: systemd Plugins: Volume: local Network: bridge host macvlan null overlay Swarm: inactive Runtimes: docker-runc runc Default Runtime: docker-runc Init Binary: /usr/libexec/docker/docker-init-current containerd version: (expected: aa8187dbd3b7ad67d8e5e3a15115d3eef43a7ed1) runc version: e9c345b3f906d5dc5e8100b05ce37073a811c74a (expected: 9df8b306d01f59d3a8029be411de015b7304dd8f) init version: 5b117de7f824f3d3825737cf09581645abbe35d4 (expected: 949e6facb77383876aeff8a6944dde66b3089574) Security Options: seccomp WARNING: You're not using the default seccomp profile Profile: /etc/docker/seccomp.json Kernel Version: 3.10.0-693.11.1.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 Number of Docker Hooks: 3 CPUs: 4 Total Memory: 7.639 GiB Name: ecs-d68e-0003.novalocal ID: 2UIG:WL75:4G6D:2VFS:YL7I:2OLN:O6IU:TTZQ:DBY2:F5VW:QOJQ:QJFS Docker Root Dir: /datas/storage/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ WARNING: bridge-nf-call-iptables is disabled WARNING: bridge-nf-call-ip6tables is disabled Experimental: false Insecure Registries: 127.0.0.0/8 Live Restore Enabled: false Registries: docker.io (secure)
（2）
[root@ecs docker]# cd /datas/storage/docker/
[root@ecs docker]# ls
containers image network overlay2 plugins swarm tmp trust volumes
完成