yum源修改阿里云源

基于centos7

#备份现有base源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

#下载阿里云源
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo --no-check-certificate

#修改repo文件失效地址
sed -i 's/mirrors.cloud.aliyuncs.com/mirrors.aliyun.com/g' /etc/yum.repos.d/CentOS-Base.repo

#卸载现有epel源和安装新的epel源
yum -y remove epel-release && yum install epel-release -y

#清理缓存并加载元数据
yum clean all && yum makecache

基于centos6

执行以下脚本
#!/bin/bash

main(){
    local yum_dir=/etc/yum.repos.d
    if [ -f ${yum_dir}/epel.repo ];then
        mv ${yum_dir}/epel.repo ${yum_dir}/epel.repo.backup
    fi
    sed -i "s|enabled=1|enabled=0|g" /etc/yum/pluginconf.d/fastestmirror.conf
    mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
    curl -o /etc/yum.repos.d/CentOS-Base.repo https://www.xmpan.com/Centos-6-Vault-Aliyun.repo
    yum clean all
    yum makecache
}
main