1. certbot 설치 $ sudo snap install --classic certbot 2. 인증서 받기 $ sudo certbot --apache -d ww2.woobi.net -d ww3.woobi.net 받고자 하는 도메인을 -d 도메인 식으로 추가하여 입력한다.(ex: -d ww2.woobi.net -d ww3.woobi.net) 3. 항목 입력 Enter email address (used for urgent renewal and security notices) (Enter 'c' to cancel): 이메일주소입력 Please read the Terms of Service at https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must agree in order to register with the ACME server....