【关于centos8 使用yum命令下载软件出现错误Failed to download metadata for repo ‘AppStream‘】_centos8 yum failed to download metadata for repo a-优快云博客

本文链接：https://blog.youkuaiyun.com/javac_py/article/details/124754560

// [root@autocontroller ~]# yum update
CentOS-8 - AppStream 70 B/s | 38 B 00:00
Error: Failed to download metadata for repo 'AppStream'

错误原因是：CentOs Linux 8 从 2021.10.31 号后已经停止维护，所以之后更新镜像需要通过 vault.centos.org来获取更新。
所以需要更新下载源，修改的文件是CentOS-Linux-BaseOS.repo和CentOS-Linux-AppStream.repo

cd /etc/yum.repos.d/

baseurl=https://vault.centos.org/centos/ $r e l e a s e v e r / B a s e O S /$ basearch/os/

baseurl=https://vault.centos.org/centos/ $r e l e a s e v e r / A p p S t r e a m /$ basearch/os/

最后退出到根目录下，更新yum

cd ~
yum update -y