Are you trying to install something from the 7.x family? The process is similar but want to make sure we are talking about the same version of the documentation.
RedHat for 7.x would be here:
Where as current would be here:
What command are you running when you get the error. If there is any more information being returned after the command fails could that be included as well?
In the end the issue was more of conflict between silly setup infrastructure team put into yum.
Since they told yum to use their cacert with one crt only, everything else(public and trusted even) is going to die on SSL error, and not all error messages will say that.
which brings us to two options how to resolve the issue. We choose the latter - sslverify was skipped in our ansible playbook.
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