Generally, you install the Dogtag Certificate System on the Fedora Linux operating system. offers versions of the Futurex PKCS #11 library for both RHEL 7 and RHEL 8. We recommend installing Dogtag on a Fedora 28 system because RHEL 8 is centered around Fedora 28. If you plan to install Dogtag on a non-Fedora system, you must manually build the system by following the instructions at the following link: https://github.com/dogtagpki/pki