1. 申请好自己的域名 dockerhub.xxx.com，并解析好IP。
2. 安装nginx（默认开通了http） ，修改
server_name dockerhub.xxxx.com;
启动。
3. 安装 certbot ， 我是centos7 ,参考地址：https://certbot.eff.org/#centosrhel7-nginx
4. 生成证书并自动修改nginx 配置， 完成。
[root@instance-1 ~]# certbot --nginx Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator nginx, Installer nginx Enter email address (used for urgent renewal and security notices) (Enter 'c' to cancel): youmail@qq.com Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org ------------------------------------------------------------------------------- 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 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 Starting new HTTPS connection (1): supporters.eff.org No names were found in your configuration files. Please enter in your domain name(s) (comma and/or space separated) (Enter 'c' to cancel): Please specify --domains, or --installer that will help in domain names autodiscovery, or --cert-name for an existing certificate name. IMPORTANT NOTES: - 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. [root@instance-1 ~]# certbot --nginx Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator nginx, Installer nginx Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org Which names would you like to activate HTTPS for? ------------------------------------------------------------------------------- 1: dockerhub.xxxxx.com ------------------------------------------------------------------------------- Select the appropriate numbers separated by commas and/or spaces, or leave input blank to select all options shown (Enter 'c' to cancel): 1 Obtaining a new certificate Performing the following challenges: tls-sni-01 challenge for dockerhub.xxxxx.com Waiting for verification... Cleaning up challenges Deployed Certificate to VirtualHost /etc/nginx/nginx.conf for set(['dockerhub.hecmcc.com']) Please choose whether or not to redirect HTTP traffic to HTTPS, removing HTTP access. ------------------------------------------------------------------------------- 1: No redirect - Make no further changes to the webserver configuration. 2: Redirect - Make all requests redirect to secure HTTPS access. Choose this for new sites, or if you're confident your site works on HTTPS. You can undo this change by editing your web server's configuration. ------------------------------------------------------------------------------- Select the appropriate number [1-2] then [enter] (press 'c' to cancel): 2 Redirecting all traffic on port 80 to ssl in /etc/nginx/nginx.conf ------------------------------------------------------------------------------- Congratulations! You have successfully enabled https://dockerhub.hecmcc.com You should test your configuration at: https://www.ssllabs.com/ssltest/analyze.html?d=dockerhub.hecmcc.com ------------------------------------------------------------------------------- IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/dockerhub.xxxxx.com/fullchain.pem Your key file has been saved at: /etc/letsencrypt/live/dockerhub.xxxxx.com/privkey.pem Your cert will expire on 2018-03-08. To obtain a new or tweaked version of this certificate in the future, simply run certbot again with the "certonly" option. To non-interactively renew *all* of your certificates, run "certbot renew" - 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