cat /etc/redhat-release
Centos 8.3以下须先升级到8.5 ,再升级到 Stream
1.注释mirrorlist
sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*.repo
2.指向baseurl至vault.epel.cloud存储库
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.epel.cloud|g' /etc/yum.repos.d/CentOS-*.repo
3.升级系统至Centos 8.5
yum update
dnf --disablerepo '*' --enablerepo extras swap centos-linux-repos centos-stream-repos dnf distro-sync reboot
再使用cat /etc/redhat-release查看自己的版本号就行
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