Your repo file at: https://archive.cloudera.com/cm5/redhat/7/x86_64/cm/cloudera-manager.repo
is giving a 404 error.
Looking at https://archive.cloudera.com/cm5/redhat/7/x86_64/cm/ I see all the repo version but not the actual repo file.
its there only at the bottom
for repo see at bottom
View solution in original post
This problem was resolved a couple of days after posted.