由于centos放弃维护

导致yum 安装依赖报错

Errors during downloading metadata for repository 'base':

 - Curl error (28): Timeout was reached for http://mirrors.aliyuncs.com/centos/8-stream-stream-stream-stream/BaseOS/aarch64/os/repodata/repomd.xml [Connection timed out after 30001 milliseconds]

 - Status code: 404 for http://mirrors.aliyun.com/centos/8-stream-stream-stream-stream/BaseOS/aarch64/os/repodata/repomd.xml (IP: 183.201.84.178)

错误：为 repo 'base' 下载元数据失败 : Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

解决方案是切换到阿里镜像

第一步：进入这个文件，在终端输入：

cd /etc/yum.repos.d/

第二步：删除.repo，输入下面命令，输入 y

rm *.repo

第三步：查看当前目录下的.repo是否删除成功，输入下面字符串，若没有显示.repo就删除成功了

第四步：下载可以正常使用的.repo文件

安装curs命令的使用：

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

安装wgets命令的使用

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

第五步：运行yum makecache

yum makecache

然后yum安装依赖就成功了