目錄linux為repo 'AppStream'下載元數(shù)據(jù)失敗顯示錯(cuò)誤 解決Centos8下載元數(shù)據(jù)失敗(Cannot download repomd.xml: Cannot download repodata/repomd.xml)背景問題分析解決辦法總結(jié)linux為repo 'AppStream'下載元數(shù)據(jù)失敗顯示錯(cuò)誤 為 repo 'AppStream' 下載元數(shù)據(jù)失敗錯(cuò)誤：為 repo 'AppStream' 下載元數(shù)據(jù)失敗 解決

查看網(wǎng)絡(luò)有無連接，或者防火墻。

Centos8下載元數(shù)據(jù)失敗(Cannot download repomd.xml: Cannot download repodata/repomd.xml)背景

新裝了Centos8操作系統(tǒng)，安裝yum-utils時(shí)報(bào)錯(cuò)。

[parallels@localhost yum.repos.d]$ sudo yum install -y yum-utils CentOS Linux 8 - AppStream0.0 B/s | 0 B 00:00 Errors during downloading metadata for repository 'appstream': - Curl error (6): Couldn't resolve host name for http://mirror.cloud.aliyuncs.com/centos-vault/8.5.2111/AppStream/x86_64/os/repodata/repomd.xml [Could not resolve host: mirror.cloud.aliyuncs.com]錯(cuò)誤：為倉(cāng)庫(kù) 'appstream' 下載元數(shù)據(jù)失敗 : Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

問題分析

經(jīng)查詢，CentOS8操作系統(tǒng)版本生命周期結(jié)束，Linux社區(qū)不再維護(hù)，需要還源。

解決辦法

將yum源換為國(guó)內(nèi)流行的阿里云

1）備份

cd /etc/repos.d/sudo rename '.repo' '.repo.bak' /etc/yum.repos.d/*.repo?

2）從阿里云下載從阿里云下載

sudo wget https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo -O /etc/yum.repos.d/Centos-vault-8.5.2111.reposudo wget https://mirrors.aliyun.com/repo/epel-archive-8.repo -O /etc/yum.repos.d/epel-archive-8.repo

3）替換源鏈接

sed -i 's/mirrors.cloud.aliyuncs.com/mirrors.aliyun.com/g' ?/etc/yum.repos.d/Centos-vault-8.5.2111.repo?sed -i 's/mirrors.cloud.aliyuncs.com/mirrors.aliyun.com/g' ?/etc/yum.repos.d/epel-archive-8.repo

4）清除并更新緩存

yum clean all && yum makecache

5）驗(yàn)證

sudo yum update總結(jié)

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持好吧啦網(wǎng)。