Troubleshooting Red Hat CDN Channel and Multiple Certificates

The Red Hat content delivery network (CDN) channels sometimes provide multiple certificates, but the Uyuni Web UI can only import a single certificate. If CDN presents a certificate that is different to the one the Uyuni Web UI knows about, validation fails and permission to access the repository is denied, even though the certificate is accurate. The error message received is:

[error]
Repository '<repo_name>' is invalid.
<repo.pem> Valid metadata not found at specified URL
History:
 - [|] Error trying to read from '<repo.pem>'
 - Permission to access '<repo.pem>' denied.
Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository '<repo_nam' because of the above error.
Could not refresh the repositories because of errors.
HH:MM:SS RepoMDError: Cannot access repository. Maybe repository GPG keys are not imported

To resolve this issue, merge all valid certificates into a single .pem file, and rebuild the certificates for use by Uyuni:

Procedure: Resolving Multiple Red Hat CDN Certificates

  1. On the Red Hat client, at the command prompt, as root, gather all current certificates from /etc/pki/entitlement/ in a single rh-cert.pem file:

    cat 866705146090697087.pem 3539668047766796506.pem redhat-entitlement-authority.pem > rh-cert.pem

  2. Gather all current keys from /etc/pki/entitlement/ in a single rh-key.pem file:

    cat 866705146090697087-key.pem 3539668047766796506-key.pem > rh-key.pem

You can now import the new certificates to the Uyuni Server, using the instructions in Registering Red Hat Enterprise Linux Clients with CDN.