Error: Failed to download metadata for repo 'appstream': centos8 yum -y install keepalived 报如下错误 ``` Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist ``` 报这个错误 大概的意思是 镜像列表URL没找到 执行一下四步命令 代码： ``` wget 'http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/centos-gpg-keys-8-3.el8.noarch.rpm' sudo rpm -i 'centos-gpg-keys-8-3.el8.noarch.rpm' dnf --disablerepo '*' --enablerepo=extras swap centos-linux-repos centos-stream-repos sudo dnf distro-sync ``` 到此就OK了 可以正常使用yum了 亲测有效 至于怎么产生的应该和centos 放弃维护有关吧 具体没细究
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