我把CentOS的版本换到了8，遇到了如下的错误：
Total 5.3 MB/s | 3.1 MB 00:00
error: /var/cache/dnf/baseos-726e5a1cc76d0c79/packages/openssl-1.1.1k-9.el8.x86_64.rpm: signature hdr data: BAD, no. of bytes(32932) out of range
Problem opening package openssl-1.1.1k-9.el8.x86_64.rpm
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing ‘yum clean packages’.
Error: GPG check FAILED
[错误] 安装 curl 失败
用如下的命令清除缓存也不行
yum clean packages
