Linux/LetsEncrypt導入

certbot-autoのインストール

$ git clone https://github.com/certbot/certbot
$ cd certbot
$ ./certbot-auto

証明書取得

./certbot-auto certonly --webroot \
-w /var/www/example/public -d example.com \
-m sample@example.com \
--agree-tos

以下エラーが発生する場合はPython 2.7を入れる必要がある

./certbot-auto: line 558: virtualenv

Python 2.7のインストール

$ sudo yum install centos-release-scl
$ sudo yum install python27 python27-python-tools
$ python -V
Python 2.6.6
# デフォだと2.6なので以下コマンドで一時的に2.7へ
$ sudo scl enable python27 bash
$ python -V
Python 2.7.8

証明書取得が出来たら以下ファイルが出来てることを確認

# ls  /etc/letsencrypt/live/[ドメイン]/
cert.pem       chain.pem      fullchain.pem  privkey.pem

nginx設定に追加

server {
 listen 80;
 server_name example.net;
 rewrite ^ https://$server_name$request_uri? permanent;
}
server {
   listen 443 ssl;
   server_name example.net;
   ssl_certificate /etc/letsencrypt/live/example.net/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/example.net/privkey.pem;
   ssl_session_timeout 1d;
   ssl_session_cache shared:SSL:50m;
   ssl_session_tickets on;
   ssl_dhparam /etc/ssl/private/dhparam.pem;
   ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
   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:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
   ssl_prefer_server_ciphers on;

参考

• http://sankame.github.io/ssl-tls/letsencrypt_setup/