Selbst Signiertes openssl Zertifikat erstellen

openssl req -x509 -newkey rsa:4096 -sha256 -days 3650 \
  -nodes -keyout /etc/ssl/private/selfsigned.key -out /etc/ssl/certs/selfsigned.crt -subj "/CN=checkmk.it.nikomax.de" \
  -addext "subjectAltName=DNS:name1.it.nikomax.de,DNS:name2.it.nikomax.de,IP:10.1.1.1"