奔着装nginx 安装 yum 的一些记录
之前在aliyun的ECS上 直接可以看到nginx
在新服务器上查看发现没有nginx包，使用provides */nginx 查看本地的yum源中是edu的怀疑是yum源中没有，
按照如下方式命令更换aliyun的yum源
EPEL源
EPEL（Extra Packages for Enterprise Linux）是由 Fedora 社区打造，为 RHEL 及衍生发行版如 CentOS等提供高质量软件包的项目。装上了EPEL，就像在 Fedora 上一样，可以通过 yum install 软件包名，即可安装很多以前需要编译安装的软件、常用的软件或一些比较流行的软件，比如现在流行的nginx、htop、ncdu、vnstat等等，都可以使用EPEL很方便的安装更新。
yum安装
1.删除原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps
2.下载安装包
Centos6
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.*
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-41.el6.noarch.rpm
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
Centos7
wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-161.el7.centos.noarch.rpm
wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-50.el7.noarch.rpm
wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
3.安装yum包
rpm -ivh *.rpm
yum 配置
1、备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2、下载新的CentOS-Base.repo 到/etc/yum.repos.d/
CentOS 5
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
CentOS 6
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
CentOS 7
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo https://qst123.oss-cn-beijing.aliyuncs.com/SETUP/repo/CentOS-Base.repo
后边这个为阿里云内网
wegt -O 也可以
3、 yum clean all && yum makecache 缓存
epel安装
yum install epel-release
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
curl -o /etc/yum.repos.d/epel.repo https://qst123.oss-cn-beijing.aliyuncs.com/SETUP/repo/epel.repo
