Certmonger is a D-Bus based service that attempts to simplify interaction
with certifying authorities on networks which use public-key infrastructure. It is often
combined with Red Hat's IPA (Identity Policy Audit) security information management
solution to aid in the management of certificates.
The certmonger service can be disabled with the following command:
$ sudo systemctl mask --now certmonger.service
The services provided by certmonger may be essential for systems fulfilling some roles a PKI infrastructure, but its functionality is not necessary for many other use cases.