在我的场景中，由于某种原因，yum 已停止在位于美国东部 -1 区域的 Amazon EC2 实例中工作。repo 元数据的路径似乎有问题，这是正确的吗？这是版本问题吗？我在升级 awe cli 版本 2 后发现了这个问题。如果能帮助我纠正这个问题，我将不胜感激。
cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.3 (Maipo)
sudo yum update -y
Loaded plugins: amazon-id, rhui-lb, search-disabled-repos
Could not contact any CDS load balancers: https://rhui.us-east-1.aws.ce.redhat.com/pulp/content/.
yum repolist
Loaded plugins: amazon-id, rhui-lb, search-disabled-repos
Repo rhui-REGION-client-config-server-7 forced skip_if_unavailable=True due to: /etc/pki/rhui/cdn.redhat.com-chain.crt
Could not contact any CDS load balancers: https://rhui.us-east-1.aws.ce.redhat.com/pulp/content/.
rpm -qa rh-amazon-rhui-client
rh-amazon-rhui-client-2.2.118-1.el7.noarch