docker修改映象儲存位置

yum -y install epel-release yum -y install docker

docker version

docker版本資訊：

client:
version:         1.13.1
api version:     1.26
package version: docker-1.13.1-94.gitb2f74b2.el7.centos.x86_64
go version:      go1.10.3
git commit:      b2f74b2/1.13.1
built:           tue mar 12 10:27:24 2019
os/arch:         linux/amd64
server:
version:         1.13.1
api version:     1.26 (minimum version 1.12)
package version: docker-1.13.1-94.gitb2f74b2.el7.centos.x86_64
go version:      go1.10.3
git commit:      b2f74b2/1.13.1
built:           tue mar 12 10:27:24 2019
os/arch:         linux/amd64
experimental:    false

檢視docker資訊：

docker info

輸出如下：

containers: 1 running: 0 paused: 0 stopped: 1 images: 1 server version: 1.13.1 storage driver: overlay2 backing filesystem: xfs 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: df5c38a9167e87f53a9894d77c0950e178a745e7 (expected: 9df8b306d01f59d3a8029be411de015b7304dd8f) init version: fec3683b971d9c3ef73f284f176672c44b448662 (expected: 949e6facb77383876aeff8a6944dde66b3089574) security options: seccomp warning: you're not using the default seccomp profile profile: /etc/docker/seccomp.json kernel version: 3.10.0-862.14.4.el7.x86_64 operating system: centos linux 7 (core) ostype: linux architecture: x86_64 number of docker hooks: 3 cpus: 1 total memory: 991.7 mib name: fuqiang id: f2md:skqc:hszg:ln7h:l3ki:7sn2:jhrp:hmqi:3kk2:4rto:tptj:ucyz docker root dir: /var/lib/docker debug mode (client): false debug mode (server): false registry: experimental: false insecure registries: 127.0.0.0/8 live restore enabled: false

registries: docker.io (secure)

上面的輸出資訊中，docker root dir: /var/lib/docker，就是映象與容器例項的預設儲存位置；

容器映象目標位置：/home/

停止docker服務：

systemctl stop docker

資料遷移：

cp -a /var/lib/docker/ /home/

資料備份：

mv /var/lib/docker /var/lib/docker.bak

docker server version: 1.13.1通過修改/etc/docker/daemon.json檔案中的引數變更映象與容器例項的預設儲存位置；

cd /etc/docker/

yum -y install vim

/etc/docker/daemon.json原檔案：

{}

/etc/docker/daemon.json檔案修改後：

啟動docker服務：

systemctl start docker

systemctl status docker

檢視docker info資訊：

docker  info

輸入如下：

containers: 0 running: 0 paused: 0 stopped: 0 images: 0 server version: 1.13.1 storage driver: overlay2 backing filesystem: xfs 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: df5c38a9167e87f53a9894d77c0950e178a745e7 (expected: 9df8b306d01f59d3a8029be411de015b7304dd8f) init version: fec3683b971d9c3ef73f284f176672c44b448662 (expected: 949e6facb77383876aeff8a6944dde66b3089574) security options: seccomp warning: you're not using the default seccomp profile profile: /etc/docker/seccomp.json selinux kernel version: 3.10.0-862.el7.x86_64 operating system: centos linux 7 (core) ostype: linux architecture: x86_64 number of docker hooks: 3 cpus: 4 total memory: 7.455 gib name: localhost.localdomain id: 4vkw:3eps:szht:uaxv:agno:twfn:cg6u:um3i:yyjk:ns7a:indk:2q3c docker root dir: /home/docker debug mode (client): false debug mode (server): false registry: experimental: false insecure registries: 127.0.0.0/8 live restore enabled: false

registries: docker.io (secure)

通過如上輸入，我們發現：

docker root dir: /home/docker

說明容器映象與例項預設的儲存位置已經變更了。

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