事前準備
インストールは自動化されていますので、動かすための必要パッケージをインストールをします。
# yum -y install git
Let’s Encryptのインストール
# cd /etc # git clone https://github.com/letsencrypt/letsencrypt.git
SSL証明書の取得
既にWebサーバ環境が整っているのでオプション「webroot」にて実行します。ドキュメントルート直下に「.well-known/」というディレクトリが作成され必要な処理が実行されます。
AmazonLinuxは正式にサポートがされていないのでデバッグモードでインストールする必要があります。
# cd /etc/letsencrypt # ./certbot-auto certonly --webroot \ -w /var/www/html/ -d rin-ka.net \ -m [email protected] --debug\
ここで大問題が発生!インストールが正常にいきません。何とletsencrypt側のサーバが反応しない・・・・
Saving debug log to /var/log/letsencrypt/letsencrypt.log Exiting abnormally: Traceback (most recent call last): File "/root/.local/share/letsencrypt/bin/letsencrypt", line 11, in <module> sys.exit(main()) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 742, in main return config.func(config, plugins) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 666, in certonly le_client = _init_le_client(config, auth, installer) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 382, in _init_le_client acc, acme = _determine_account(config) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 367, in _determine_account config, account_storage, tos_cb=_tos_cb) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/client.py", line 158, in register acme = acme_from_config_key(config, key) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/client.py", line 44, in acme_from_config_key return acme_client.Client(config.server, key=key, net=net) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/client.py", line 71, in __init__ self.net.get(directory).json()) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/client.py", line 646, in get self._send_request('GET', url, **kwargs), content_type=content_type) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/client.py", line 619, in _send_request response = self.session.request(method, url, *args, **kwargs) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/requests/sessions.py", line 488, in request resp = self.send(prep, **send_kwargs) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/requests/sessions.py", line 609, in send r = adapter.send(request, **kwargs) File "/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/requests/adapters.py", line 499, in send raise ReadTimeout(e, request=request) ReadTimeout: HTTPSConnectionPool(host='acme-v01.api.letsencrypt.org', port=443): Read timed out. (read timeout=45) Please see the logfiles in /var/log/letsencrypt for more details.
日を改めて行ったところ、すんなりと成功しました。
------------------------------------------------------------------------------- Please read the Terms of Service at https: //letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf. You must agree in order to register with the ACME server at https: //acme-v01.api.letsencrypt.org/directory ------------------------------------------------------------------------------- (A)gree/(C)ancel: A ------------------------------------------------------------------------------- Would you be willing to share your email address with the Electronic Frontier Foundation, a founding partner of the Let's Encrypt project and the non-profit organization that develops Certbot? We'd like to send you email about EFF and our work to encrypt the web, protect its users and defend digital rights. ------------------------------------------------------------------------------- (Y)es/(N)o: Y Obtaining a new certificate Performing the following challenges: http-01 challenge for rin-ka.net Using the webroot path /var/www/html for all unmatched domains. Waiting for verification... Cleaning up challenges IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/rin-ka.net/fullchain.pem. Your cert will expire on 2017-08-19. To obtain a new or tweaked version of this certificate in the future, simply run certbot-auto again. To non-interactively renew *all* of your certificates, run "certbot-auto renew" - Your account credentials have been saved in your Certbot configuration directory at /etc/letsencrypt. You should make a secure backup of this folder now. This configuration directory will also contain certificates and private keys obtained by Certbot so making regular backups of this folder is ideal. - If you like Certbot, please consider supporting our work by: Donating to ISRG / Let's Encrypt: https://letsencrypt.org/donate Donating to EFF: https://eff.org/donate-le
SSL証明書の適用
Apacheのバージョンを確認します。バージョンにより設定方法が異なります。
Apache 2.4.8 未満だと fullchain.pem (サーバ証明書と中間証明書が結合したファイル)が利用できません。
確認したところ、fullchain.pemが利用できるようです。
# rpm -qa|grep httpd httpd24-2.4.25-1.68.amzn1.x86_64
作成したSSL証明書をApacheに組み込みます。
# cd /etc/httpd/conf.d # cp ssl.conf ssl.conf.org # vi ssl.conf
Apache 2.4.8 以降
<VirtualHost *:443> ServerName rin-ka.net SSLEngine on SSLCertificateFile /etc/letsencrypt/live/rin-ka.net/fullchain.pem SSLCertificateKeyFile /etc/letsencrypt/live/rin-ka.net/privkey.pem </VirtualHost>
Apache 2.4.8 未満
<VirtualHost *:443> ServerName rin-ka.net SSLEngine on SSLCertificateFile /etc/letsencrypt/live/rin-ka.net/cert.pem SSLCertificateKeyFile /etc/letsencrypt/live/rin-ka.net/privkey.pem SSLCertificateChainFile /etc/letsencrypt/live/rin-ka.net/chain.pem </VirtualHost>
Apacheを再起動します。
# /etc/init.d/httpd restart
SSL証明書の更新
Let’s Encrypt の証明書の有効期限は、90日間と短いため定期的に更新する必要があります。また、証明書が更新された場合はApacheに再読込を実施する必要があります。
SSL証明書の更新と、Nginxの設定再読込を実行するスクリプトを作成し、Cronで定期的にスクリプトを実行します。今回はweeklyで指定しました。
# cd /etc/cron.weekly # vi letsencrypt
#!/bin/sh /etc/letsencrypt/letsencrypt-auto renew > /dev/null /etc/init.d/httpd reload
# chmod +x letsencrypt