百胜回购问题

我的CentOS-Base.repo具有以下镜像：

[base]
name=CentOS-$releasever - Base
baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
enabled=1

#released updates
[updates]
name=CentOS Server updates
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
baseurl=http://custom-url/centOS-updates/
enabled=1

当我说时yum install yum-utils，它失败并显示错误信息

http://custom-url/centOS-updates/Packages/yum-utils-1.1.31-46.el7_5.noarch.rpm: [Errno 14] HTTP Error 500 - Internal Server Error Trying other mirror. Error downloading packages: yum-utils-1.1.31-46.el7_5.noarch: [Errno 256] No more mirrors to try.

我在这里有两个问题：

• Why is it looking at the `updates` repo instead of base. `yum info yum-utils` has the repo field set to `updates`. When I disable the `updates` repo in the repo file and do a `yum info yum-utils` it shows the repo field as `base` correctly. What decides the repo to look at given a package?
• Why is 'Package' appended to the baseUrl when it tries to find yum-utils in the updates repo? This is causing a `500 Internal Server Error` as the path with Packages appended to it is invalid

我不确定为什么必须这样做，但是清理yum元数据会正确设置存储库。

我跑了yum --enablerepo=* clean all，然后重试。