Centos updates yum source to Alibaba Cloud

[1] First backup CentOS-Base.repo

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

[2] Enter the yum source configuration file directory

cd /etc/yum.repos.d/

[3] Download Alibaba Cloud's yum source configuration file

• Put in /etc/yum.repos.d/ (please make corresponding backup before operation)

163：

wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

centos5 ：

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

centos6:

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

centos7:

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

[4] Cleanup

yum clean all

[5] Update cache

yum makecache
yum install tree -y
yum update -y

yum -y update