sudo yum install -y yum-utils 时出错

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sudo yum install -y yum-utils 时出错

- centOS 安装yum-utils时出错

centOS 安装yum-utils时出错

出现下面错误：

[root@iZbp15upsrdbnx99j4uix7Z /]# sudo yum install -y yum-utils
CentOS-8 - AppStream                                                                                  19 kB/s | 2.3 kB     00:00    
Errors during downloading metadata for repository 'AppStream':
  - Status code: 404 for http://mirrors.cloud.aliyuncs.com/centos/8/AppStream/x86_64/os/repodata/repomd.xml (IP: 100.100.2.148)
Error: Failed to download metadata for repo 'AppStream': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

上面说了是 http://mirrors.cloud.aliyuncs.com/centos/8/AppStream/x86_64/os/repodata/repomd.xml 这个地址404

网上找了一圈，说要找到配置文件打开 /etc/yum.repos.d 目录下的 CentOS-Base.repo 修改 baseurl 为阿里云的地址：

[BaseOS]
baseurl=https://mirrors.aliyun.com/centos/$releasever/BaseOS/$basearch/os/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial

我跟着配置发现不行，仔细观察报错发现是'AppStream' 这个文件，所以再次找到 /etc/yum.repos.d 目录，把这个目录下的 CentOS-AppStream.repo 的 baseurl 也改为阿里云的地址

[AppStream]
name=CentOS-$releasever - AppStream
baseurl=https://mirrors.aliyun.com/centos/$releasever/AppStream/$basearch/os/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial

接着还是不行

[root@iZbp15upsrdbnx99j4uix7Z yum.repos.d]# sudo yum install -y yum-utils
CentOS-8 - AppStream                                                                                 8.3 kB/s | 2.3 kB     00:00    
Errors during downloading metadata for repository 'AppStream':
  - Status code: 404 for https://mirrors.aliyun.com/centos/8/AppStream/x86_64/os/repodata/repomd.xml (IP: 39.96.118.147)
Error: Failed to download metadata for repo 'AppStream': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

然后问题回到那个404 的地址，直接复制在浏览器是打不开的，但是https://mirrors.aliyun.com/centos是可以打开的

我顺着目录，发现 https://mirrors.aliyun.com/centos/8-stream/AppStream/这个目录，然后就对应上了那个404 的地址

所以我回到 CentOS-AppStream.repo 把baseurl 改为

baseurl=https://mirrors.aliyun.com/centos/8-stream/AppStream/$basearch/os/

重新执行sudo yum install -y yum-utils

ok 解决问题

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