docker安装方法（常见安装出错问题汇总）

在CentOS 6.3 x86_64下安装php-mcrypt的时候出现了问题：Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again，需要安装epel源。

解决方法： 一句话：把vi /etc/yum.repos.d/epel.repo，文件第3行注释去掉，把第四行注释掉。具体如下：将第六行的disabled改成为0 即disabled=1改成disabled=0

打开/etc/yum.repos.d/epel.repo，将

1. [epel]
2. name=Extra Packages for Enterprise Linux 6 - $basearch
3. #baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
4. mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

修改为

1. [epel]
2. name=Extra Packages for Enterprise Linux 6 - $basearch
3. baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
4. #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

再清理源，重新安装

1. yum clean all
2. yum install -y 需要的包

如果还是不行，修改DNS,到/etc/resolv.conf下添加一下：

nameserver 8.8.8.8
search localdomain

然后重启network服务：service network restart

最近在群里听说Docker很火，于是自己抱着试试的态度，想玩玩，可是遇到了一些问题，记录下来，方便备忘，也方便防止大家被坑。

     我的虚拟机装的是centos 6.5,百度了好多教程，丫的，都不解释，就一句命令：yum install docker-io,这句话是用源安装docker,可是源一般是国外源，用这个命令因为GFW被墙，根本安装不了。

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1.  [root@localhost ~]# yum install docker-io  
2. Loaded plugins: fastestmirror, refresh-packagekit, security  
3. Loading mirror speeds from cached hostfile  
4.  * base: mirrors.skyshe.cn  
5.  * extras: mirrors.skyshe.cn  
6.  * updates: centosx4.centos.org  
7. Setting up Install Process  
8. No package docker-io available.  
9. Error: Nothing to do  
10.   
11.   
12. <pre name="code" class="plain">[root@localhost ~]# yum install docker  
13. Loaded plugins: fastestmirror, refresh-packagekit, security  
14. Loading mirror speeds from cached hostfile  
15.  * base: mirrors.163.com  
16.  * extras: mirrors.skyshe.cn  
17.  * updates: centosx4.centos.org  
18. Setting up Install Process  
19. No package docker available.  
20. Error: Nothing to do  

        总共尝试了好几次，所谓的镜像很不稳定，不是没有找到，就是找到了，下了一半就中途断了，哎，网上总是说一句话搞定，可是一句话搞定要有前提呀，于是乎，我看了开源中国的docker更新记录

• Ubuntu/Debian: curl -sSL https://get.docker.com | sh

• Linux 64bit binary: https://get.docker.com/builds/Linux/x86_64/docker-1.7.1

• Darwin/OSX 64bit client binary: https://get.docker.com/builds/Darwin/x86_64/docker-1.7.1

• Darwin/OSX 32bit client binary: https://get.docker.com/builds/Darwin/i386/docker-1.7.1

• Linux 64bit tgz: https://get.docker.com/builds/Linux/x86_64/docker-1.7.1.tgz

• Windows 64bit client binary: https://get.docker.com/builds/Windows/x86_64/docker-1.7.1.exe

• Windows 32bit client binary: https://get.docker.com/builds/Windows/i386/docker-1.7.1.exe

• Centos 6/RHEL 6: https://get.docker.com/rpm/1.7.1/centos-6/RPMS/x86_64/docker-engine-1.7.1-1.el6.x86_64.rpm

• Centos 7/RHEL 7: https://get.docker.com/rpm/1.7.1/centos-7/RPMS/x86_64/docker-engine-1.7.1-1.el7.centos.x86_64.rpm

• Fedora 20: https://get.docker.com/rpm/1.7.1/fedora-20/RPMS/x86_64/docker-engine-1.7.1-1.fc20.x86_64.rpm

• Fedora 21: https://get.docker.com/rpm/1.7.1/fedora-21/RPMS/x86_64/docker-engine-1.7.1-1.fc21.x86_64.rpm

• Fedora 22: https://get.docker.com/rpm/1.7.1/fedora-22/RPMS/x86_64/docker-engine-1.7.1-1.fc22.x86_64.rpm

         啥也不说成功了，

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1. [root@localhost ~]# yum install https://get.docker.com/rpm/1.7.1/centos-6/RPMS/x86_64/docker-engine-1.7.1-1.el6.x86_64.rpm  
2. Loaded plugins: fastestmirror, refresh-packagekit, security  
3. Loading mirror speeds from cached hostfile  
4.  * base: mirrors.163.com  
5.  * extras: mirrors.skyshe.cn  
6.  * updates: centosx4.centos.org  
7. Setting up Install Process  
8. docker-engine-1.7.1-1.el6.x86_64.rpm                                                                                                 | 4.5 MB     00:07       
9. Examining /var/tmp/yum-root-YSfgzS/docker-engine-1.7.1-1.el6.x86_64.rpm: docker-engine-1.7.1-1.el6.x86_64  
10. Marking /var/tmp/yum-root-YSfgzS/docker-engine-1.7.1-1.el6.x86_64.rpm to be installed  
11. Resolving Dependencies  
12. --> Running transaction check  
13. ---> Package docker-engine.x86_64 0:1.7.1-1.el6 will be installed  
14. --> Processing Dependency: libcgroup for package: docker-engine-1.7.1-1.el6.x86_64  
15. --> Running transaction check  
16. ---> Package libcgroup.x86_64 0:0.40.rc1-16.el6 will be installed  
17. --> Finished Dependency Resolution  
18.   
19. Dependencies Resolved  
20.   
21. ============================================================================================================================================================  
22.  Package                          Arch                      Version                              Repository                                            Size  
23. ============================================================================================================================================================  
24. Installing:  
25.  docker-engine                    x86_64                    1.7.1-1.el6                          /docker-engine-1.7.1-1.el6.x86_64                     19 M  
26. Installing for dependencies:  
27.  libcgroup                        x86_64                    0.40.rc1-16.el6                      base                                                 129 k  
28.   
29. Transaction Summary  
30. ============================================================================================================================================================  
31. Install       2 Package(s)  
32.   
33. Total size: 19 M  
34. Total download size: 129 k  
35. Installed size: 20 M  
36. Is this ok [y/N]: y  
37. Downloading Packages:  
38. libcgroup-0.40.rc1-16.el6.x86_64.rpm                                                                                                 | 129 kB     00:00       
39. Running rpm_check_debug  
40. Running Transaction Test  
41. Transaction Test Succeeded  
42. Running Transaction  
43.   Installing : libcgroup-0.40.rc1-16.el6.x86_64                                                                                                         1/2  
44.   Installing : docker-engine-1.7.1-1.el6.x86_64                                                                                                         2/2  
45.   Verifying  : libcgroup-0.40.rc1-16.el6.x86_64                                                                                                         1/2  
46.   Verifying  : docker-engine-1.7.1-1.el6.x86_64                                                                                                         2/2  
47.   
48. Installed:  
49.   docker-engine.x86_64 0:1.7.1-1.el6                                                                                                                          
50.   
51. Dependency Installed:  
52.   libcgroup.x86_64 0:0.40.rc1-16.el6                                                                                                                          
53.   
54. Complete!  
55.   
56.   
57. [root@localhost ~]# service docker start  
58. Starting cgconfig service:                                 [  OK  ]  
59. Starting docker:                                       [  OK  ]  

    下面就开始玩玩docker了，以后慢慢分享

    其他的大家可以看看：http://www.linuxidc.com/Linux/2014-07/104768.htm

                                          https://linux.cn/article-4340-1.html

                                          http://www.centoscn.com/image-text/config/2015/0718/5877.html

docker安装方法（常见安装出错问题汇总）

原文：http://www.cnblogs.com/linjiaxin/p/6485970.html