certbot官網(wǎng)

下載certbot

# 下載certbot-auto
wget -c https://dl.eff.org/certbot-auto -P /usr/local/bin
# 設(shè)置可執(zhí)行權(quán)限
chmod +x /usr/local/bin/certbot-auto
# 查看版本，第一次運(yùn)行certbot-auto會(huì)安裝依賴
certbot-auto --version

申請證書

certbot-auto certonly  -d *.example.com --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory 

1. certonly 安裝模式
2. -d 申請證書的域名，如果是通配符域名輸入 *.example.com
3. --manual 手動(dòng)安裝插件
4. --preferred-challenges dns 使用 DNS 方式校驗(yàn)域名所有權(quán)
5. --server，Let's Encrypt ACME v2 版本使用的服務(wù)器不同于 v1 版本，需要顯示指定

# 輸入電子郵箱，用于續(xù)費(fèi)和安全通知
Enter email address (used for urgent renewal and security notices)
 (Enter 'c' to cancel): xxx@163.com

# 服務(wù)條款，A：同意，C：取消
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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
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(A)gree/(C)ancel: A

# 是否訂閱相關(guān)的郵件
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Would you be willing, once your first certificate is successfully issued, 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.
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(Y)es/(N)o: N

# IP綁定
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NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you're running certbot in manual mode on a machine that is not
your server, please ensure you're okay with that.

Are you OK with your IP being logged?
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(Y)es/(N)o: Y

配置DNS TXT記錄

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Please deploy a DNS TXT record under the name
_acme-challenge.example.com with the following value:

pzBqECpVNkjt8gx76qVAYevMFg6n_8dfq-Xqr2f9dI8

Before continuing, verify the record is deployed.
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Press Enter to Continue

1. 到購買域名的服務(wù)商控制臺解析域名
2. 添加一條TXT記錄
3. 主機(jī)記錄：_acme-challenge.example.com
4. 記錄值：pzBqECpVNkjt8gx76qVAYevMFg6n_8dfq-Xqr2f9dI8
5. 記錄生效后，回車

Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/example.com/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/example.com/privkey.pem
   Your cert will expire on 2020-12-21. 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

證書目錄：/etc/letsencrypt/live/example.com

ls /etc/letsencrypt/live/example.com
cert.pem  chain.pem  fullchain.pem  privkey.pem  README

自動(dòng)續(xù)訂

• 創(chuàng)建續(xù)訂證書腳本

  touch /usr/local/bin/sslrenew.sh
  

• 編輯腳本內(nèi)容
  在sslrenew.sh文件中添加以下內(nèi)容

  certbot-auto renew

• 設(shè)置腳本可執(zhí)行

  chmod +x /usr/local/bin/sslrenew.sh
  

• 編輯定時(shí)任務(wù),每月1號執(zhí)行續(xù)訂操作

  crontab -e
  

  添加定時(shí)邏輯

  0 0 1 * * /usr/local/bin/sslrenew.sh

• 重新加載定時(shí)任務(wù)

  service crond reload
  

• 查看定時(shí)任務(wù)列表

  crontab -l
  

配置nginx

server {
        listen       443 ssl;
        server_name  localhost;
        
        location / {
            root   html;
            index  index.html index.htm;
        }
        ssl on;
        ssl_session_timeout 5m;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
        ssl_prefer_server_ciphers on;
        ssl_certificate      /etc/letsencrypt/live/example.com/cert.pem;
        ssl_certificate_key  /etc/letsencrypt/live/example.com/privkey.pem;
}

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