certbot官网教程
https://certbot.eff.org/lets-encrypt/centosrhel7-nginx
环境，其他环境可以参考certbot官网，大同小异
centos7
nginx
一、安装
yum install certbot python2-certbot-nginx
二、扩展插件：DNS plugin
yum install python2-certbot-dns-rfc2136
三、开始配置
certbot --nginx
会要求你输入联系邮箱，并选择相关配置：
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): 【输入你的邮箱】
Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org
- - - - - - - - - - - - 【是否同意协议】 - - - - - - - - - - - - - - - - - - - - -
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-v02.api.letsencrypt.org/directory
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(A)gree/(C)ancel: A
- - - - - - - - - - - - 【是否订阅certbot的相关资讯】- - - - - - - - - - - - - - - - - - - -
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 our work
encrypting the web, EFF news, campaigns, and ways to support digital freedom.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(Y)es/(N)o: N
Which names would you like to activate HTTPS for?
- - - - - - 【certbot会去扫描的/etc/nginx/conf目录下的所有配置文件，如果没有扫描出来，就要看自己的文件名是否跟域名对应】- - - - -
1: 你的域名
2: 你的域名
3: 你的域名
4: 你的域名
5: 你的域名
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Select the appropriate numbers separated by commas and/or spaces, or leave input
blank to select all options shown (Enter 'c' to cancel):
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for 你的域名
http-01 challenge for 你的域名
http-01 challenge for 你的域名
http-01 challenge for 你的域名
http-01 challenge for 你的域名
Waiting for verification...
Cleaning up challenges
Resetting dropped connection: acme-v02.api.letsencrypt.org
Deploying Certificate to VirtualHost /etc/nginx/conf.d/你的域名.conf
Deploying Certificate to VirtualHost /etc/nginx/conf.d/你的域名.conf
Deploying Certificate to VirtualHost /etc/nginx/conf.d/你的域名.conf
Deploying Certificate to VirtualHost /etc/nginx/conf.d/你的域名.conf
Deploying Certificate to VirtualHost /etc/nginx/conf.d/你的域名.conf
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.
# 不重定向
2: Redirect - Make all requests redirect to secure HTTPS access. Choose this for
# certbot 会自动修改你的nginx配置，添加重定向配置
new sites, or if you're confident your site works on HTTPS. You can undo this
change by editing your web server's configuration.
- - - - - - -【选择是否进行重定向，建议重定向，可以保证别人没有输入https时生效】- - - - - - - - - - -
Select the appropriate number [1-2] then [enter] (press 'c' to cancel): 2
Redirecting all traffic on port 80 to ssl in /etc/nginx/conf.d/你的域名.conf
Redirecting all traffic on port 80 to ssl in /etc/nginx/conf.d/你的域名.conf
Redirecting all traffic on port 80 to ssl in /etc/nginx/conf.d/你的域名.conf
Redirecting all traffic on port 80 to ssl in /etc/nginx/conf.d/你的域名.conf
Redirecting all traffic on port 80 to ssl in /etc/nginx/conf.d/你的域名.conf
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Congratulations! You have successfully enabled https://你的域名,
https://你的域名,https://你的域名,https://你的域名,https://你的域名,
You should test your configuration at:
https://www.ssllabs.com/ssltest/analyze.html?d=你的域名
https://www.ssllabs.com/ssltest/analyze.html?d=你的域名
https://www.ssllabs.com/ssltest/analyze.html?d=你的域名
https://www.ssllabs.com/ssltest/analyze.html?d=你的域名
https://www.ssllabs.com/ssltest/analyze.html?d=你的域名
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- 出现以下文字标识成功
IMPORTANT NOTES:【注意你的证书存放目录】
- Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/你的域名/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/你的域名/privkey.pem
Your cert will expire on 2019-06-23. 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"
- 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
四、注意事项
- htpps证书续订命令，90天会过期：
certbot renew
- 测试续订功能
certbot renew --dry-run
- htpps证书自动续订（利用linux的cron job功能）
crontab –e
- 添加以下代码：
0 0,12 * * * python -c 'import random; import time; time.sleep(random.random() * 3600)' && certbot renew
【欢迎转载，请保留出处：https://www.jianshu.com/p/5fb387e3d929】