之前從centos 8 升到 centos 8 stream 的几器最近無法更新

出現以下訊息

 [root@localhost ~]# dnf -y update

Failed to set locale, defaulting to C.UTF-8

CentOS Linux 8 - AppStream                      51  B/s |  38  B     00:00    

Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

重新執行以下指令

dnf --disablerepo '*' --enablerepo extras swap centos-linux-repos centos-stream-repos

dnf distro-sync

再 dnf -y update 就正常了

https://www.centos.org/download/