Generating a Key and Certificate Signing Request (CSR)

openssl \
    -out fqdn.csr \
    -new \
    -newkey rsa:4096 \
    -nodes \
    -keyout fqdn.key \
    -subj "/C=COUNTRY/ST=STATE/L=CITY/O=COMPANY/OU=ORG/CN=FQDN"