https://www.cnblogs.com/xred/p/3845215.html
中间碰到的问题：
1、ssl认证问题，直接安装ca-certificates
2、yum命令不好使问题，redhat安装yum
3、vm无法连互联网问题，修改vm的配置，改成NAS
4、epel资源mirror错误问题，解决办法是修改epel.conf路径为base。
名词解释
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名词 |
解释 |
备注 |
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Selinux |
安全增强型 Linux（Security-Enhanced Linux）简称 SELinux。它是一个 Linux 内核模块，也是 Linux 的一个安全子系统。 |
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LXC |
LXC为Linux Container的简写;Linux Container容器是一种内核虚拟化技术，可以提供轻量级的虚拟化，以便隔离进程和资源。LXC与docker的关系:（1）Docker并不是LXC的替代品，Docker的底层就是使用了LXC来实现的。LXC将Linux进程沙盒化，使得进程之间相互隔离，并且能够控制各进程的资源分配。 |
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EPEL |
EPEL的全称叫 Extra Packages for Enterprise Linux 。EPEL是由 Fedora 社区打造，为 RHEL 及衍生发行版如 CentOS、Scientific Linux 等提供高质量软件包的项目。装上了 EPEL之后，就相当于添加了一个第三方源。 |
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hop5.repo |
Centos 6.x Package Repository http://www.hop5.in/yum/el6/repoview/ |
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一、禁用selinux
由于Selinux和LXC有冲突，所以需要禁用selinux。编辑/etc/selinux/config，设置两个关键变量。
SELINUX=disabled
SELINUXTYPE=targeted
二、配置Fedora EPEL源
1 sudo yum install http://ftp.riken.jp/Linux/fedora/epel/6/x86_64/epel-release-6-8.noarch.rpm
三、添加hop5.repo源
cd /etc/yum.repos.d
sudo wget http://www.hop5.in/yum/el6/hop5.repo
四、安装Docker
sudo yum install docker-io
1\执行安装命令：
[root@guang ~]# yum install docker-io
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package docker-io.x86_64 0:0.6.2-1.el6 will be installed
--> Processing Dependency: lxc >= 0.8.0 for package: docker-io-0.6.2-1.el6.x86_64
--> Processing Dependency: kernel-ml-aufs >= 3.10.5 for package: docker-io-0.6.2-1.el6.x86_64
--> Running transaction check
---> Package kernel-ml-aufs.x86_64 0:3.10.5-3.el6 will be installed
---> Package lxc.x86_64 0:1.0.11-1.el6 will be installed
--> Processing Dependency: lua-lxc(x86-64) = 1.0.11-1.el6 for package: lxc-1.0.11-1.el6.x86_64
--> Processing Dependency: lua-alt-getopt for package: lxc-1.0.11-1.el6.x86_64
--> Processing Dependency: liblxc.so.1()(64bit) for package: lxc-1.0.11-1.el6.x86_64
--> Running transaction check
---> Package lua-alt-getopt.noarch 0:0.7.0-1.el6 will be installed
---> Package lua-lxc.x86_64 0:1.0.11-1.el6 will be installed
--> Processing Dependency: lua-filesystem for package: lua-lxc-1.0.11-1.el6.x86_64
---> Package lxc-libs.x86_64 0:1.0.11-1.el6 will be installed
--> Running transaction check
---> Package lua-filesystem.x86_64 0:1.4.2-1.el6 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================================================
Installing:
docker-io x86_64 0.6.2-1.el6 hop5 1.3 M
Installing for dependencies:
kernel-ml-aufs x86_64 3.10.5-3.el6 hop5 33 M
lua-alt-getopt noarch 0.7.0-1.el6 epel 6.9 k
lua-filesystem x86_64 1.4.2-1.el6 epel 24 k
lua-lxc x86_64 1.0.11-1.el6 epel 16 k
lxc x86_64 1.0.11-1.el6 epel 124 k
lxc-libs x86_64 1.0.11-1.el6 epel 257 k
Transaction Summary
=============================================================================================================================================================
Install 7 Package(s)
Total size: 35 M
Total download size: 289 k
Installed size: 160 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): lua-alt-getopt-0.7.0-1.el6.noarch.rpm | 6.9 kB 00:00
(2/3): lua-filesystem-1.4.2-1.el6.x86_64.rpm | 24 kB 00:00
(3/3): lxc-libs-1.0.11-1.el6.x86_64.rpm | 257 kB 00:00
-------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 61 kB/s | 289 kB 00:04
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
Importing GPG key 0x0608B895:
Userid : EPEL (6) <epel@fedoraproject.org>
Package: epel-release-6-8.noarch (@/epel-release-6-8.noarch)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : lxc-libs-1.0.11-1.el6.x86_64 1/7
Installing : lua-filesystem-1.4.2-1.el6.x86_64 2/7
Installing : lua-lxc-1.0.11-1.el6.x86_64 3/7
Installing : lua-alt-getopt-0.7.0-1.el6.noarch 4/7
Installing : lxc-1.0.11-1.el6.x86_64 5/7
Installing : kernel-ml-aufs-3.10.5-3.el6.x86_64 6/7
Installing : docker-io-0.6.2-1.el6.x86_64 7/7
Verifying : docker-io-0.6.2-1.el6.x86_64 1/7
Verifying : lxc-1.0.11-1.el6.x86_64 2/7
Verifying : lua-lxc-1.0.11-1.el6.x86_64 3/7
Verifying : lxc-libs-1.0.11-1.el6.x86_64 4/7
Verifying : lua-alt-getopt-0.7.0-1.el6.noarch 5/7
Verifying : kernel-ml-aufs-3.10.5-3.el6.x86_64 6/7
Verifying : lua-filesystem-1.4.2-1.el6.x86_64 7/7
Installed:
docker-io.x86_64 0:0.6.2-1.el6
Dependency Installed:
kernel-ml-aufs.x86_64 0:3.10.5-3.el6 lua-alt-getopt.noarch 0:0.7.0-1.el6 lua-filesystem.x86_64 0:1.4.2-1.el6 lua-lxc.x86_64 0:1.0.11-1.el6
lxc.x86_64 0:1.0.11-1.el6 lxc-libs.x86_64 0:1.0.11-1.el6
Complete!
2\安装结果验证：
[root@guang ~]# docker -h
Usage of docker:
-D=false: Debug mode
-H=[unix:///var/run/docker.sock]: tcp://host:port to bind/connect to or unix://path/to/socket to use
-api-enable-cors=false: Enable CORS requests in the remote api.
-b="": Attach containers to a pre-existing network bridge. Use 'none' to disable container networking
-d=false: Daemon mode
-dns="": Set custom dns servers
-g="/var/lib/docker": Path to graph storage base dir.
-p="/var/run/docker.pid": File containing process PID
-r=false: Restart previously running containers
-v=false: Print version information and quit
[root@guang ~]#