一、查看系统版本
[root@localhost ~]# cat /etc/redhat-release CentOS release 6.7 (Final)
二、安装EPEL
1.进入centos6系列EPEL下载地址
http://download.fedoraproject.org/pub/epel/6/i386/repoview/epel-release.html
2. wget下载
[root@localhost ~]# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm --2015-09-10 17:50:49-- http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm 正在解析主机 download.fedoraproject.org... 67.219.144.68, 209.132.181.16, 66.35.62.162, ... 正在连接 download.fedoraproject.org|67.219.144.68|:80... 已连接。 已发出 HTTP 请求，正在等待回应... 302 Found 位置：http://mirrors.opencas.cn/epel/6/i386/epel-release-6-8.noarch.rpm [跟随至新的 URL] --2015-09-10 17:50:50-- http://mirrors.opencas.cn/epel/6/i386/epel-release-6-8.noarch.rpm 正在解析主机 mirrors.opencas.cn... 159.226.11.160, 2001:cc0:2004:1:225:90ff:fe00:fe8b, 2001:cc0:2004:1:225:90ff:fe3a:e6b5 正在连接 mirrors.opencas.cn|159.226.11.160|:80... 已连接。 已发出 HTTP 请求，正在等待回应... 200 OK 长度：14540 (14K) [application/x-redhat-package-manager] 正在保存至: “epel-release-6-8.noarch.rpm” 100%[=======================================================================================================>] 14,540 12.9K/s in 1.1s 2015-09-10 17:50:56 (12.9 KB/s) - 已保存 “epel-release-6-8.noarch.rpm” [14540/14540])
3.rpm安装EPEL(我已经安装过了，所以显示已经安装了)
[root@localhost ~]# rpm -ivh epel-release-6-8.noarch.rpm warning: epel-release-6-8.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY Preparing... ########################################### [100%] package epel-release-6-8.noarch is already installed
4.安装好EPEL 源后，用yum 命令来检查是否添加到源列表
root@localhost ~]# yum repolist 已加载插件：fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: centos.ustc.edu.cn * epel: mirror01.idc.hinet.net * extras: mirrors.163.com * updates: mirrors.163.com 仓库标识 仓库名称 状态 base CentOS-6 - Base 6,575 *epel Extra Packages for Enterprise Linux 6 - x86_64 11,766 extras CentOS-6 - Extras 35 updates CentOS-6 - Updates 298 repolist: 18,674
5.bingo，已经添加。进行缓存。
[root@localhost ~]# yum makecache 已加载插件：fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile Could not get metalink https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=x86_64 error was 12: Timeout on https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=x86_64: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 30 seconds') * base: mirrors.hust.edu.cn * epel: ftp.cuhk.edu.hk * extras: centos.ustc.edu.cn * updates: centos.ustc.edu.cn base | 3.7 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 元数据缓存已建立
三、禁用selinux
1.查看selinux状态
[root@localhost ~]# cat /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=enforcing # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted
2.修改该配置文件中将enforcing替换为disabled
[root@localhost ~]# cat /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted
3.reboot重启一下系统，使生效。
四、准备就绪，安装docker-io，摸摸哒。
[root@localhost ~]# yum install docker-io 已加载插件：fastestmirror, refresh-packagekit, security 设置安装进程 Loading mirror speeds from cached hostfile * base: mirrors.hust.edu.cn * epel: ftp.cuhk.edu.hk * extras: mirrors.163.com * updates: mirrors.163.com 解决依赖关系 --> 执行事务检查 ---> Package docker-io.x86_64 0:1.7.1-2.el6 will be 安装 --> 处理依赖关系 lxc，它被软件包 docker-io-1.7.1-2.el6.x86_64 需要 --> 处理依赖关系 libcgroup，它被软件包 docker-io-1.7.1-2.el6.x86_64 需要 --> 执行事务检查 ---> Package libcgroup.x86_64 0:0.40.rc1-16.el6 will be 安装 ---> Package lxc.x86_64 0:1.0.7-2.el6 will be 安装 --> 处理依赖关系 lua-lxc(x86-64) = 1.0.7-2.el6，它被软件包 lxc-1.0.7-2.el6.x86_64 需要 --> 处理依赖关系 lua-alt-getopt，它被软件包 lxc-1.0.7-2.el6.x86_64 需要 --> 处理依赖关系 liblxc.so.1()(64bit)，它被软件包 lxc-1.0.7-2.el6.x86_64 需要 --> 执行事务检查 ---> Package lua-alt-getopt.noarch 0:0.7.0-1.el6 will be 安装 ---> Package lua-lxc.x86_64 0:1.0.7-2.el6 will be 安装 --> 处理依赖关系 lua-filesystem，它被软件包 lua-lxc-1.0.7-2.el6.x86_64 需要 ---> Package lxc-libs.x86_64 0:1.0.7-2.el6 will be 安装 --> 执行事务检查 ---> Package lua-filesystem.x86_64 0:1.4.2-1.el6 will be 安装 --> 完成依赖关系计算 依赖关系解决 ================================================================================================================================================= 软件包 架构 版本 仓库 大小 ================================================================================================================================================= 正在安装: docker-io x86_64 1.7.1-2.el6 epel 4.6 M 为依赖而安装: libcgroup x86_64 0.40.rc1-16.el6 base 129 k 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 1.0.7-2.el6 epel 15 k lxc x86_64 1.0.7-2.el6 epel 120 k lxc-libs x86_64 1.0.7-2.el6 epel 250 k 事务概要 ================================================================================================================================================= Install 7 Package(s) 总下载量：5.1 M Installed size: 20 M 确定吗？[y/N]：
还需要我解释么，一路y下去。
启动我们的宝贝docker
[root@localhost ~]# /etc/init.d/docker start Starting cgconfig service: [确定] Starting docker: [确定]
查看docker进程
[root@localhost ~]# ps -ef | grep docker root 3602 1 0 18:26 pts/0 00:00:00 /usr/bin/docker -d root 3745 3429 0 18:27 pts/0 00:00:00 grep docker
查看安装的docker版本
Status: Downloaded newer image for centos:latest [root@localhost ~]# docker version Client version: 1.7.1 Client API version: 1.19 Go version (client): go1.4.2 Git commit (client): 786b29d/1.7.1 OS/Arch (client): linux/amd64 Server version: 1.7.1 Server API version: 1.19 Go version (server): go1.4.2 Git commit (server): 786b29d/1.7.1 OS/Arch (server): linux/amd64
注意：
我在这里并没有升级系统内核
[root@localhost ~]# uname -r 2.6.32-573.3.1.el6.x86_64
docker官方文档说要求Linux kernel至少3.8以上。
在一个新的终端里守护模式运行docker时，会出现warning
[root@localhost ~]# docker -d WARN[0000] You are running linux kernel version 2.6.32-573.3.1.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.10.0.
但是目前表示我可以正常使用。