yum报错：

http://repos.fedorapeople.org/repos/openstack/openstack-icehouse/epel-6/repodata/repomd.xml:
[Errno 14] problem making ssl connection

Trying other mirror.

Error: Cannot retrieve repository metadata (repomd.xml) for
repository: openstack-icehouse. Please verify its path and try again

后来查了一些资料，貌似是ssl证书问题。

解决办法:

vi /etc/yum.repos.d/rdo-release.repo

把里面的enabled=0禁用掉

再执行

yum install ca-certificates

再把enabled=1了。
应该就解决了。