一.更换yum源为阿里源
1.由于centos自带的yum源在国内使用时有时候速度会很慢,导致yum在线安装速度缓慢。这时候就需要yum源为国内的一些镜像站点。
2.首先访问阿里云镜像站点:http://mirrors.aliyun.com
3.选择对应的linux发行版(此次使用CentOS Linux release 7.4.1708进行测试)

4.进入7.6.1810版本,此次准备创建4个repo
1)os/:即发行版光盘上附带的所有基础rpm包
2)updates/ :所有更新的rpm包
3)extras/ :附带的一些额外包
4)centosplus/ :额外增添的一些包

5.找到repodata所在目录并记录其路径:

6.repo的配置文件在/etc/yum.repos.d/*repo,制作名称为CentOS-Base.repo;并将之前的CentOS-Base.repo更改为CentOS-Base.repo.apk
1)开始编辑CentOS-Base.repo文件
[aliyun] 仓库ID
name=this is os repo 仓库介绍
baseurl=https://mirrors.aliyun.com/centos/$releasever/os/$basearch/ repo链接,$releasever为版本号,$basearch为基础架构
enabled=1 开启仓库
gpgcheck=1 检查其rpm包的合法性及完整性
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 秘钥地址
7.依据上面步骤添加剩余三个仓库,并且将网易镜像链接也添加进来做防范措施.。
[aliyun]
name=this is os repo
failovermethod=priority 出错防范措施,为顺序执行
baseurl=https://mirrors.aliyun.com/centos/$releasever/os/$basearch/
https://mirrors.163.com/centos/$releasever/os/$basearch
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#https://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
[updates]
name=this is updates repo
failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
https://mirrors.163.com/centos/$releasever/updates/$basearch
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#https://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
[centosplus]
name=this is centosplus repo
failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
https://mirrors.163.com/centos/$releasever/centosplus/$basearch
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#https://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
[extras]
name=this is extras repo
failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
https://mirrors.163.com/centos/$releasever/extras/$basearch
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#https://mirrors.163.com/centos/RPM-GPG-KEY

本文详述如何将CentOS的yum源更换为阿里云镜像站,并指导如何制作本地yum源,包括从发行版光盘创建和自定义本地存储路径。步骤涵盖配置repo文件、创建缓存、检查可用仓库以及使用createrepo制作repodata。
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