使用certbot免费升级到https

环境为 Ubuntu Server 16.04 和 Nginx，具体可参考官网，letsencrypt是certbot以前的名称，github的地址也重定向到certbot了。

Certbot, previously the Let’s Encrypt Client, is EFF’s tool to obtain certs from Let’s Encrypt, and (optionally) auto-enable HTTPS on your server. It can also act as a client for any other CA that uses the ACME protocol.

安装依赖

sudo apt-get update
sudo apt-get install python2.7 git -y
sudo apt-get install software-properties-common

下载certbot

git clone https://github.com/certbot/certbot.git
cd certbot

新方式：

$ sudo add-apt-repository ppa:certbot/certbot $ sudo apt-get update $ sudo apt-get install python-certbot-nginx

不重启获取证书

./certbot-auto certonly --webroot -w /var/www/your-project-dir -d your-domain.com -d another-domain.com

新方式：

$ sudo certbot —nginx 自动配置Nginx和更新证书。

配置nginx

server{
      listen 80;
      # 如果访问http自动跳转到https
      return 302 https://your-domain.com/
}
server {
       listen 443;
       # 需要多个域名配置的话下面只需要保留一个
       listen [::]:443 ssl ipv6only=on;
       # server name
       server_name your-project-name.com;

       root your-project-dir;
       index index.html index.htm index.php;

       ssl on;
       # 注意下面的地址要正确
       ssl_certificate /etc/letsencrypt/live/your-domain/fullchain.pem;
       ssl_certificate_key /etc/letsencrypt/live/your-domain/privkey.pem;
       ssl_session_timeout 5m;
       ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2;
       ssl_ciphers "HIGH:!aNULL:!MD5 or HIGH:!aNULL:!MD5:!3DES";
       ssl_prefer_server_ciphers on;
        }
}

重启 nginx 服务

sudo service nginx restart

到期自动更新

certbot renew --dry-run

如果正常工作（1.5版本有bug会报错），可以使用

certbot renew

待解决问题

WARNING: unable to check for updates.
Creating virtual environment...
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2363, in <module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 719, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 988, in create_environment
    download=download,
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 918, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 812, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /root/.local/share/letsencrypt/bin/python2.7 - setuptools pkg_resources pip wheel failed with error code 2

有说是pip版本的问题，现在升级到最新版本也无用，正在解决。 (2017年4月6日23:23:36) 临时解决的方式，可以apt安装letscrypt，然后使用letscrypt certonly -w /your-project-dir -d your-domain.com安装证书，然后配置证书。