Centos 7配置阿里云yum源

wget http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.6.repo

1. 禁用 yum插件 fastestmirror

1)修改插件的配置文件

cp /etc/yum/pluginconf.d/fastestmirror.conf /etc/yum/pluginconf.d/fastestmirror.conf.bak

vi /etc/yum/pluginconf.d/fastestmirror.conf

enabled = 1 //由1改为0，禁用该插件

2)修改yum的配置文件

cp /etc/yum.conf /etc/yum.conf.bak

vi /etc/yum.conf

plugins=1 //改为0，不使用插件

yum clean all

1. 获取阿里云 repo
   wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
   或者
   curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

cp /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.bak
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

3.清理原来的缓存，重新缓存

yum clean all

yum makecache

yum update

完工