「深度学习福利」大神带你进阶工程师，立即查看>>>
docker 安装好后默认image存储目录在 /var/lib/docker 目录下，但是通常这个目录挂载的空间很小，所以我们在安装好 docker 后要注意修改 image 存储目录
一、查看当前目录 docker info Containers: 6 Images: 27 Storage Driver: devicemapper Pool Name: docker-8:17-34377337422-pool Pool Blocksize: 65.54 kB Backing Filesystem: xfs Data file: /dev/loop0 Metadata file: /dev/loop1 Data Space Used: 15.5 GB Data Space Total: 107.4 GB Data Space Available: 91.87 GB Metadata Space Used: 12.78 MB Metadata Space Total: 2.147 GB Metadata Space Available: 2.135 GB Udev Sync Supported: true Deferred Removal Enabled: false Data loop file: /home/docker/devicemapper/devicemapper/data Metadata loop file: /home/docker/devicemapper/devicemapper/metadata Library Version: 1.02.107-RHEL7 (2015-10-14) Execution Driver: native-0.2 Logging Driver: json-file Kernel Version: 3.10.0-514.16.1.el7.x86_64 Operating System: CentOS Linux 7 (Core) CPUs: 48 Total Memory: 251.7 GiB Name: map-trafficft-train03.nmg01 ID: EZPC:SQMC:3OIZ:QNRV:IWXW:TMEI:TLYD:2TVK:OKBK:TVCI:KPRQ:AZPE
当然我这个是修改后的，修改后为、home/docker目录下
二、备份当前已有镜像 docker save -o 文件名.tar 镜像名
三、修改目录
查找配置文件
不同安装方式，每个版本配置文件好像不一样，有的是docker.service，有的是docker。我们可以先搜索一下docker.service，如果能搜索到则按照docker.service修改方法修改。我是没有搜索到docker.service，所以我搜索的是docker： find . -name docker ./run/docker ./run/lock/subsys/docker ./home/docker ./home/docker/devicemapper/mnt/85e3a46c4424073ff5eac7c0f59916480b7857996ea247f895f133fbc61ba63c/rootfs/opt/ansible/ansible/lib/ansible/modules/cloud/docker ./home/docker/devicemapper/mnt/85e3a46c4424073ff5eac7c0f59916480b7857996ea247f895f133fbc61ba63c/rootfs/opt/ansible/ansible/test/units/modules/cloud/docker ./home/docker/devicemapper/mnt/85e3a46c4424073ff5eac7c0f59916480b7857996ea247f895f133fbc61ba63c/rootfs/opt/ansible/ansible/test/utils/docker ./home/docker/devicemapper/mnt/85e3a46c4424073ff5eac7c0f59916480b7857996ea247f895f133fbc61ba63c/rootfs/opt/ansible/ansible/test/integration/targets/docker ./home/docker/devicemapper/mnt/d86b865a73dd83d9972608816fbfeb7b7c9ac701764e2939f9d4056821584319/rootfs/usr/lib/python2.7/site-packages/docker ./home/docker/devicemapper/mnt/d86b865a73dd83d9972608816fbfeb7b7c9ac701764e2939f9d4056821584319/rootfs/opt/ansible/ansible/lib/ansible/modules/cloud/docker ./home/docker/devicemapper/mnt/d86b865a73dd83d9972608816fbfeb7b7c9ac701764e2939f9d4056821584319/rootfs/opt/ansible/ansible/test/units/modules/cloud/docker ./home/docker/devicemapper/mnt/d86b865a73dd83d9972608816fbfeb7b7c9ac701764e2939f9d4056821584319/rootfs/opt/ansible/ansible/test/utils/docker ./home/docker/devicemapper/mnt/d86b865a73dd83d9972608816fbfeb7b7c9ac701764e2939f9d4056821584319/rootfs/opt/ansible/ansible/test/integration/targets/docker ./home/docker/devicemapper/mnt/5689c9844ad255f7ed1a65d4e32897cc760d8095e1f28f07256c05a25d990f8c/rootfs/usr/lib/python2.7/site-packages/docker ./home/docker/devicemapper/mnt/5689c9844ad255f7ed1a65d4e32897cc760d8095e1f28f07256c05a25d990f8c/rootfs/opt/ansible/ansible/lib/ansible/modules/cloud/docker ./home/docker/devicemapper/mnt/5689c9844ad255f7ed1a65d4e32897cc760d8095e1f28f07256c05a25d990f8c/rootfs/opt/ansible/ansible/test/units/modules/cloud/docker ./home/docker/devicemapper/mnt/5689c9844ad255f7ed1a65d4e32897cc760d8095e1f28f07256c05a25d990f8c/rootfs/opt/ansible/ansible/test/utils/docker ./home/docker/devicemapper/mnt/5689c9844ad255f7ed1a65d4e32897cc760d8095e1f28f07256c05a25d990f8c/rootfs/opt/ansible/ansible/test/integration/targets/docker ./home/docker/devicemapper/mnt/c499fe8367d97af8a9ba8efbdc8626ef047053004eee3ca8f6450ca9507327f7/rootfs/usr/lib/python2.7/site-packages/docker ./home/docker/devicemapper/mnt/c499fe8367d97af8a9ba8efbdc8626ef047053004eee3ca8f6450ca9507327f7/rootfs/opt/ansible/ansible/lib/ansible/modules/cloud/docker ./home/docker/devicemapper/mnt/c499fe8367d97af8a9ba8efbdc8626ef047053004eee3ca8f6450ca9507327f7/rootfs/opt/ansible/ansible/test/units/modules/cloud/docker ./home/docker/devicemapper/mnt/c499fe8367d97af8a9ba8efbdc8626ef047053004eee3ca8f6450ca9507327f7/rootfs/opt/ansible/ansible/test/utils/docker ./home/docker/devicemapper/mnt/c499fe8367d97af8a9ba8efbdc8626ef047053004eee3ca8f6450ca9507327f7/rootfs/opt/ansible/ansible/test/integration/targets/docker ./etc/docker ./etc/sysconfig/docker ./etc/rc.d/init.d/docker ./var/log/docker ./var/lib/docker ./usr/share/bash-completion/completions/docker ./usr/bin/docker ./usr/libexec/docker
配置文件就是/etc/sysconfig/docker
修改配置文件
在配置文件中将other_args赋值为你想存储的目录，注意一定要带引号 # /etc/sysconfig/docker # # Other arguments to pass to the docker daemon process # These will be parsed by the sysv initscript and appended # to the arguments list passed to docker -d other_args="--graph=/home/docker" DOCKER_CERT_PATH=/etc/docker # Resolves: rhbz#1176302 (docker issue #407) DOCKER_NOWARN_KERNEL_VERSION=1 # Location used for temporary files, such as those created by # # docker load and build operations. Default is /var/lib/docker/tmp # # Can be overriden by setting the following environment variable. # # DOCKER_TMPDIR=/var/tmp
四、重启docker service docker restart
五、查看docker image 存储目录 docker info
六、将image load进来 docker load -i [docker备份文件.tar]
七、删除之前docker imaga目录