本文为转帖，原创：singular港
1、安装wget下载工具
yum install wget -y
2、进入yum源配置文件
//进入yum配置文件夹
cd /etc/yum.repos.d
//备份之前的配置文件
mv CentOS-Base.repo CentOS-Base.repo.bak
3、下载国内镜像源
//网易163源
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
//阿里源
wget http://mirrors.aliyun.com/repo/Centos-7.repo
4、设置需要的镜像源为默认源
//修改指定的yum源为默认yum源
mv /etc/yum.repos.d/Centos-7.repo /etc/yum.repos.d/CentOS-Base.repo
5、清空之前缓存生成新的缓存
//清空缓存
yum clean all
//生成新的缓存
yum makecache
6、手动添加配置文件
6.1、阿里云服务器配置文件
[base]
name=CentOS-$releasever
enabled=1
failovermethod=priority
baseurl=http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.cloud.aliyuncs.com/centos/RPM-GPG-KEY-CentOS-7
[updates]
name=CentOS-$releasever
enabled=1
failovermethod=priority
baseurl=http://mirrors.cloud.aliyuncs.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.cloud.aliyuncs.com/centos/RPM-GPG-KEY-CentOS-7
[extras]
name=CentOS-$releasever
enabled=1
failovermethod=priority
baseurl=http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.cloud.aliyuncs.com/centos/RPM-GPG-KEY-CentOS-7
6.2、腾讯云服务器配置文件
[extras]
gpgcheck=1
gpgkey=http://mirrors.tencentyun.com/centos/RPM-GPG-KEY-CentOS-7
enabled=1
baseurl=http://mirrors.tencentyun.com/centos/$releasever/extras/$basearch/
name=Qcloud centos extras - $basearch
[os]
gpgcheck=1
gpgkey=http://mirrors.tencentyun.com/centos/RPM-GPG-KEY-CentOS-7
enabled=1
baseurl=http://mirrors.tencentyun.com/centos/$releasever/os/$basearch/
name=Qcloud centos os - $basearch
[updates]
gpgcheck=1
gpgkey=http://mirrors.tencentyun.com/centos/RPM-GPG-KEY-CentOS-7
enabled=1
baseurl=http://mirrors.tencentyun.com/centos/$releasever/updates/$basearch/
name=Qcloud centos updates - $basearch
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版权声明：本文为CSDN博主「singular港」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_38264999/article/details/102418686
