Installation
apt-get install git
git clone https://github.com/letsencrypt/letsencrypt /opt/letsencrypt
Mise en place du certificat...
/opt/letsencrypt/letsencrypt-auto certonly --rsa-key-size 4096 --webroot --webroot-path /var/www/mondomaine.fr -d mondomaine.fr
Ajouter ces lignes dans le fichier de configuration du site...
server {
listen 443 ssl http2;
ssl on;
ssl_certificate /etc/letsencrypt/live/mondomaine.fr/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/mondomaine.fr/privkey.pem;
ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /etc/letsencrypt/live/mondomaine.fr/fullchain.pem;
ssl_session_cache shared:SSL:100m;
ssl_session_timeout 24h;
ssl_session_tickets on;
ssl_session_ticket_key /etc/nginx/ssl/ticket.key;
ssl_dhparam /etc/nginx/ssl/dhparam4.pem;
ssl_ecdh_curve secp384r1;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK';
}
Générer les clefs...
mkdir -p /etc/nginx/ssl
openssl rand 48 -out /etc/nginx/ssl/ticket.key
openssl dhparam -out /etc/nginx/ssl/dhparam4.pem 4096
Mise à jour du certificat...
/opt/letsencrypt/letsencrypt-auto renew
Puis ajouter cette ligne dans la crontab...
30 3 * * 0 /opt/letsencrypt/letsencrypt-auto renew >> /var/log/letsencrypt/renewal.log