centos上配置yum源
1. 进入yum源repo的目录
cd /etc/yum.repos.d/
然后可以通过ls查看下面所有的后缀为.repo的文件
2. 新建一个备份目录，将原有的.repo文件放到其中
mkdir yum.repos.d.backup
mv *.repo yum.repos.d.backup/
3. 获取阿里提供的repo配置文件
这里使用到了wget命令，如果系统中没有这个命令，可以看我的这篇文章，有具体的非常简单的安装方法，https://blog.csdn.net/qq_43699958/article/details/144395575
wget -O /etc/yum.repos.d/CentOS7.aliyun.repo http://mirrors.aliyun.com/repo/Centos-7.repo
用ll命令查看下文件
[root@localhost yum.repos.d]# ll
总用量 4
-rw-r--r--. 1 root root 2523 8月 4 2022 CentOS7.aliyun.repo
drwxr-xr-x. 2 root root 220 12月 11 10:23 yum.repos.d.backup
这个文件的具体内容如下，也可以新建个CentOS7.aliyun.repo文件，将文件内容通过vi工具写进去
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client. You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#
[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/
http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#released updates
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/
http://mirrors.cloud.aliyuncs.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/
http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/
http://mirrors.cloud.aliyuncs.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/
http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/
http://mirrors.cloud.aliyuncs.com/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
4. 清理以前的yum配置，并进行yum的缓存建立和软件更新，以此执行如下命令
yum clean all
yum makecache
yum update
5. 检验是否安装成功
安装个软件试试
[root@localhost yum.repos.d]# yum install net-tools
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
base | 3.6 kB 00:00:00
extras | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
正在解决依赖关系
--> 正在检查事务
---> 软件包 net-tools.x86_64.0.2.0-0.25.20131004git.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
=======================================================================================================================================================================================================
Package 架构 版本 源 大小
=======================================================================================================================================================================================================
正在安装:
net-tools x86_64 2.0-0.25.20131004git.el7 base 306 k
事务概要
=======================================================================================================================================================================================================
安装 1 软件包
总下载量：306 k
安装大小：917 k
Is this ok [y/d/N]:
安装完成后执行ifconfig命名，是可以查看本机ip的，说明安装成功~
奥利给~
原文地址：https://blog.csdn.net/qq_43699958/article/details/144396000
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