File containing a pregenerated ephemeral DH key
--ssl-tmp-dh-param path
ssl-tmp-dh-param specifies the path to the
pre-generated ephemeral DH key. If this parameter is not provided,
the server instance automatically generates the DH key at start-up.
Providing a pre-generated DH key can decrease instance start time.
pathPath to the pre-generated DH key. Relative and absolute paths are valid.
The instance loads the DH key from dh_param.pem which
is located at instance_root/x509.
--ssl-tmp-dh-param ./x509/dh_param.pem