centos6 yum源失效

使用如下内容覆盖/etc/yum.repo.d/Centos.Base.repo

[base]
name=CentOS-6
failovermethod=priority
baseurl=https://vault.centos.org/6.9/os/x86_64/
gpgcheck=0

yum clean all

yum makecache

[base]
name=CentOS-6
failovermethod=priority
baseurl=https://vault.centos.org/6.9/os/x86_64/
gpgcheck=0