[教程/工具] centos7 yum报错mirrorlist.centos.org无法访问

报错日志
2 `# B# F" K( HLoading mirror speeds from cached hostfile Could not retrieve mirrorlist http://mirrorlist.centos.org?arch=x86_64&release=7&repo=sclo-rh error was 14: curl#6 - "Could not resolve host mirrorlist.centos.org: ; 未知的错误"
% `0 T0 ^1 c4 m+ |5 r0 M  Z原因：mirrorlist.centos.org 不再被支持* \* z% G8 x& t$ }* P- t' f5 i( W
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解决方法
% a  T& R9 B) t4 j' k2 ]sudo sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo
1 J* v+ \+ x% P, y* N+ m+ G: ^sudo sed -i s/^#.*baseurl=http/baseurl=https/g /etc/yum.repos.d/*.repo ' O% t1 S9 w9 }' f& R" w& A
sudo sed -i s/^mirrorlist=http/#mirrorlist=https/g /etc/yum.repos.d/*.repo
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