Red Hat Linux uses yum to install a workaround for the public key for *.rpm are not installed

Public key for cluster_administration-en-us-5.2-1.noarch.rpm are not installed
These are error messages, found on the internet to solve the method:
in this case, you will import the RPM signature information
log in as root and execute the following command
# RPM--import/etc/pki/rpm-gpg/rpm-gpg-key-redhat-release

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Red Hat Linux uses yum to install a workaround for the public key for *.rpm are not installed