CentOS 8: yum仓库配置

在CentOS 8中,使用yum时出现错误，镜像列表中没有url，类似如下:

Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

原因

在2022年1月31日，CentOS团队从官方镜像中移除CentOS 8的所有包。CentOS 8操作系统版本结束了生命周期（EOL），Linux社区已不再维护该操作系统版本。

CentOS 8已于2021年12月31日寿终正寝，但软件包仍在官方镜像上保留了一段时间。现在他们被转移到 https://vault.centos.org

解决方法

如果你仍然需要运行CentOS 8，你可以在/etc/yum.repos.d中更新一下源。使用 vault.centos.org 代替mirror.centos.org

[root@centos8 yum.repos.d]# sudo sed -i -e "s|mirrorlist=|#mirrorlist=|g" /etc/yum.repos.d/CentOS-*
[root@centos8 yum.repos.d]# sudo sed -i -e "s|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g" /etc/yum.repos.d/CentOS-*

本质上是用仍在运行的URL替换之前的URL

centos8配置阿里云yum源

centos8（centos8官方源已下线，建议切换centos-vault源）

## 官方站点
https://mirrors.aliyun.com/centos-vault/

## 下载centos8.5仓库配置文件
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

## 常用配置 [base] [extras] [AppStream]

vim Centos-vault-8.5.2111.repo

# 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-8.5.2111 - Base - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos-vault/8.5.2111/BaseOS/$basearch/os/
        http://mirrors.aliyuncs.com/centos-vault/8.5.2111/BaseOS/$basearch/os/
        http://mirrors.cloud.aliyuncs.com/centos-vault/8.5.2111/BaseOS/$basearch/os/
gpgcheck=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official

#additional packages that may be useful
[extras]
name=CentOS-8.5.2111 - Extras - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos-vault/8.5.2111/extras/$basearch/os/
        http://mirrors.aliyuncs.com/centos-vault/8.5.2111/extras/$basearch/os/
        http://mirrors.cloud.aliyuncs.com/centos-vault/8.5.2111/extras/$basearch/os/
gpgcheck=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-8.5.2111 - Plus - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos-vault/8.5.2111/centosplus/$basearch/os/
        http://mirrors.aliyuncs.com/centos-vault/8.5.2111/centosplus/$basearch/os/
        http://mirrors.cloud.aliyuncs.com/centos-vault/8.5.2111/centosplus/$basearch/os/
gpgcheck=0
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official

[PowerTools]
name=CentOS-8.5.2111 - PowerTools - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos-vault/8.5.2111/PowerTools/$basearch/os/
        http://mirrors.aliyuncs.com/centos-vault/8.5.2111/PowerTools/$basearch/os/
        http://mirrors.cloud.aliyuncs.com/centos-vault/8.5.2111/PowerTools/$basearch/os/
gpgcheck=0
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official

[AppStream]
name=CentOS-8.5.2111 - AppStream - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos-vault/8.5.2111/AppStream/$basearch/os/
        http://mirrors.aliyuncs.com/centos-vault/8.5.2111/AppStream/$basearch/os/
        http://mirrors.cloud.aliyuncs.com/centos-vault/8.5.2111/AppStream/$basearch/os/
gpgcheck=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official

配置epel源

## 安装 epel 配置包
yum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm

## 将 repo 配置中的地址替换为阿里云镜像站地址
sed -i 's|^#baseurl=https://download.example/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel*
sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel*

或
[epel]
name=EPEL
baseurl=https://mirrors.aliyun.com/epel/$releasever/Everything/$basearch/
gpgcheck=0
enabled=1