# CentOS 8 中 更新或下载时报错：为仓库 ‘appstream‘ 下载元数据失败 : Cannot prepare internal mirrorlist
原因 ： CentOS Linux 8 已于 2021 年 12 月 31 日停止更新和维护，由于 CentOS 团队从官方镜像中移除 CentOS 8 的所有包，所以在使用 yum 源安装或更新会报上述失败错误。
# 一、错误重现
CentOS Stream 8 - AppStream 0.0 B/s | 0 B 00:00 | |
Errors during downloading metadata for repository 'appstream': | |
- Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8-stream&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org] | |
错误：为仓库 'appstream' 下载元数据失败 : Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8-stream&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org] |
或者
Failed to set locale, defaulting to C.UTF-8 | |
CentOS Linux 8 - AppStream 0.0 B/s | 0 B 00:00 | |
Errors during downloading metadata for repository 'appstream': | |
- Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org] | |
Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org] |
# 二、解决办法
进入仓库源文件夹下
cd /etc/yum.repos.d/ |
修改镜像配置内容
sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* | |
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-* |
清空原有缓存，并重新生成
yum clean all && yum makecache |
更新软件包
yum update -y |
