centos上配置yum源_centos repo

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.backupmv *.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.repodrwxr-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-$releasever - Base - mirrors.aliyun.comfailovermethod=prioritybaseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/gpgcheck=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #released updates [updates]name=CentOS-$releasever - Updates - mirrors.aliyun.comfailovermethod=prioritybaseurl=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=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful[extras]name=CentOS-$releasever - Extras - mirrors.aliyun.comfailovermethod=prioritybaseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/gpgcheck=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that extend functionality of existing packages[centosplus]name=CentOS-$releasever - Plus - mirrors.aliyun.comfailovermethod=prioritybaseurl=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=1enabled=0gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #contrib - packages by Centos Users[contrib]name=CentOS-$releasever - Contrib - mirrors.aliyun.comfailovermethod=prioritybaseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/contrib/$basearch/gpgcheck=1enabled=0gpgkey=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：fastestmirrorLoading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.combase  | 3.6 kB 00:00:00extras | 2.9 kB 00:00:00updates  | 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 kIs 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~

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