docker修改image存儲目錄

時間 2019-11-13

原文原文鏈接

docker 安裝好後默認image存儲目錄在 /var/lib/docker 目錄下，可是一般這個目錄掛載的空間很小，因此咱們在安裝好 docker 後要注意修改 image 存儲目錄python

1、查看當前目錄

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

固然我這個是修改後的，修改後爲、home/docker目錄下docker

2、備份當前已有鏡像

docker save -o 文件名.tar 鏡像名

3、修改目錄

查找配置文件json

不一樣安裝方式，每一個版本配置文件好像不同，有的是docker.service，有的是docker。咱們能夠先搜索一下docker.service，若是能搜索到則按照docker.service修改方法修改。我是沒有搜索到docker.service，因此我搜索的是docker：bash

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/dockerapp

修改配置文件python2.7

在配置文件中將other_args賦值爲你想存儲的目錄，注意必定要帶引號ide

# /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