本文先容了 Docker 在 openSUSE 情况下的具体安装进程，并实验运行一个简朴 Spring Boot 的 image 来感觉下 Docker 的风范。

什么是 Docker

Docker 是为开拓人员和系统打点员用于构建、宣布、并运行漫衍式应用措施的开放式平台。该平台由 Docker 引擎（一个便携、轻巧的运行时和打包东西） 和 Docker Hub （一个共享应用措施和自动化事情流的云处事）等构成。Docker 可以使应用措施从组件迅速组装并消除了开拓、质量担保和出产情况之间的摩擦问题。这样一来，IT部分可以更快地宣布，而这些应用措施不管是运行在条记本电脑、数据中心的虚拟机，照旧任何的云，其运行进程和功效都是一致的。

更多有关 Docker 的先容，可以参阅《简述 Docker》 一文。

前置条件

利用 uname -r 查抄 kernel 版本

$ uname -r
4.1.12-1-default

发起你利用最新的系统，软件开发，软件开发，觉得一直的 bug 城市在新的 kernel 宣布中修复。

安装

openSUSE 13.2 起，自带了客栈，所以无需添加

安装 openSUSE 海内镜像源

网络原因，会见 openSUSE 速度慢且不不变，发起回收海内镜像库，下面例子是利用的 aliyun

zypper addrepo -f http://mirrors.aliyun.com/opensuse/update/leap/42.1/oss  openSUSE-42.1-Update-Oss

zypper addrepo -f http://mirrors.aliyun.com/opensuse/update/leap/42.1/non-oss/ openSUSE-42.1-Update-Non-Oss

zypper addrepo -f http://mirrors.aliyun.com/opensuse/distribution/leap/42.1/repo/oss/ openSUSE-42.1-Oss

zypper addrepo -f http://mirrors.aliyun.com/opensuse/distribution/leap/42.1/repo/non-oss/  openSUSE-42.1-Non-Oss

zypper addrepo -f http://mirrors.aliyun.com/packman/openSUSE_Leap_42.1/ aliyun-packman

安装 Docker 包

$ sudo zypper in docker

输出如下：

linux-aihn:~ # zypper in docker
Retrieving repository 'openSUSE-Leap-42.1-Update' metadata --------------------------[|]

Warning: Digest verification failed for file '7256e9794decb02046412d2dc8ab5fa5a17875c1303f31663094da5ede29e933-app-icons.tar.gz'
[/var/cache/zypp/raw/repo-updateQVITjj/repodata/7256e9794decb02046412d2dc8ab5fa5a17875c1303f31663094da5ede29e933-app-icons.tar.gz]

  expected 7256e9794decb02046412d2dc8ab5fa5a17875c1303f31663094da5ede29e933
  but got  a6be6f0868adbffa79d87856f6f3de4317a1e5c3f923be66eed899c4b559850b

Accepting packages with wrong checksums can lead to a corrupted system and in extreme cases even to a system compromise.

However if you made certain that the file with checksum 'a6be..' is secure, correct
and should be used within this operation, enter the first 4 characters of the checksum
to unblock using this file on your own risk. Empty input will discard the file.

Unblock or discard? [a6be/? shows all options] (discard): discard
Retrieving repository 'openSUSE-Leap-42.1-Update' metadata ......................[error]
Repository 'openSUSE-Leap-42.1-Update' is invalid.
[repo-update|http://download.opensuse.org/update/leap/42.1/oss/] Valid metadata not found at specified URL
Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'openSUSE-Leap-42.1-Update' because of the above error.
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following 6 NEW packages are going to be installed:
  bridge-utils docker git-core git-gui gitk perl-Error

6 new packages to install.
Overall download size: 10.6 MiB. Already cached: 0 B. After the operation, additional
50.7 MiB will be used.
Continue? [y/n/? shows all options] (y): y
Retrieving package perl-Error-0.17021-3.2.noarch   (1/6),  28.3 KiB ( 49.8 KiB unpacked)
Retrieving: perl-Error-0.17021-3.2.noarch.rpm ....................................[done]
Retrieving package bridge-utils-1.5-21.3.x86_64    (2/6),  32.0 KiB ( 66.0 KiB unpacked)
Retrieving: bridge-utils-1.5-21.3.x86_64.rpm .....................................[done]
Retrieving package git-core-2.6.2-3.1.x86_64       (3/6),   3.9 MiB ( 25.7 MiB unpacked)
Retrieving: git-core-2.6.2-3.1.x86_64.rpm ..........................[done (267.4 KiB/s)]
Retrieving package gitk-2.6.2-3.1.x86_64           (4/6), 217.2 KiB (705.6 KiB unpacked)
Retrieving: gitk-2.6.2-3.1.x86_64.rpm ............................................[done]
Retrieving package git-gui-2.6.2-3.1.x86_64        (5/6), 296.1 KiB (  1.3 MiB unpacked)
Retrieving: git-gui-2.6.2-3.1.x86_64.rpm .........................................[done]
Retrieving package docker-1.9.1-13.1.x86_64        (6/6),   6.2 MiB ( 22.9 MiB unpacked)
Retrieving: docker-1.9.1-13.1.x86_64.rpm ...........................[done (272.8 KiB/s)]
Checking for file conflicts: .....................................................[done]
(1/6) Installing: perl-Error-0.17021-3.2 .........................................[done]
(2/6) Installing: bridge-utils-1.5-21.3 ..........................................[done]
(3/6) Installing: git-core-2.6.2-3.1 .............................................[done]
(4/6) Installing: gitk-2.6.2-3.1 .................................................[done]
(5/6) Installing: git-gui-2.6.2-3.1 ..............................................[done]
(6/6) Installing: docker-1.9.1-13.1 ..............................................[done]
Additional rpm output:
creating group docker...
Updating /etc/sysconfig/docker...

启动 docker 守护历程

$ sudo systemctl start docker.service

设置让 docker 处事随系统自动启动

$ sudo systemctl enable docker.service

docker 会建设一个以docker定名的用户组，添加用户到这个用户组

sudo /usr/sbin/usermod -a -G docker <username>

卸载 docker

卸载 Docker 包:

$ sudo zypper rm docker