docker的安装

1.11是个分水岭

[size=x-large]一、1.11+版本[/size]
1.11+版本，使用tgz
[url]https://docs.docker.com/engine/installation/binaries/[/url]

[size=large]1. 安装[/size]

# curl –L https://get.docker.com/builds/Linux/x86_64/docker-1.12.1.tgz -o docker-1.12.1.tgz
tar -xvzf docker-1.12.1.tgz
# mv docker/* /usr/bin/

[size=large]2. 卸载yum安装的docker[/size]

#yum list installed | grep docker

[img]http://dl2.iteye.com/upload/attachment/0119/8183/efdb2827-3a33-3b7e-9e93-f2e79cdb58e0.png[/img]

# yum -y remove docker.x86_64
# rm -rf /var/lib/docker

[size=x-large]二、1.10-版本[/size]
1.10-版本，使用单文件
[url]https://docs.docker.com/v1.10/engine/installation/binaries/[/url]

# curl -L  https://get.docker.com/builds/Linux/x86_64/docker-1.10.3 -o docker
# chmod +x docker
# mv docker /usr/bin/ 

[size=x-large]三、docker storage发生比较大的变化[/size]
[url]https://docs.docker.com/engine/reference/commandline/dockerd/#/daemon-storage-driver-option[/url]

1.10-默认使用devicemapper， 代表性的/var/lib/docker/devicemapper
1.11推荐使用overlay，并且overlay已经被添加到Linux 3.18.0的内核，overlay 2已经被添加到Linux 4.0的内核
使用：dockerd -s overlay

[size=x-large]四、image的导入、导出[/size]
[size=large]1.查看image[/size]

# docker images  

[img]http://dl2.iteye.com/upload/attachment/0119/8185/dd775caf-b18a-37c8-8c29-cf265c897bd6.png[/img]

[size=large]2.导出image[/size]

# docker save centos > ./centos.tgz

[img]http://dl2.iteye.com/upload/attachment/0119/8195/d3c71cbb-c9c4-36a9-96d5-71831ee76198.png[/img]


[size=large]3.导入image[/size]

# docker load < centos.tgz

[img]http://dl2.iteye.com/upload/attachment/0119/8193/471ee912-efe6-3bf8-ac9d-f8db56e9a9e4.png[/img]