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49.3. 手工生成证书,基于 DNS 认证

			
# 泛域名:
certbot certonly -d *.netkiller.cn --manual --preferred-challenges dns

# 主域名:
certbot certonly -d netkiller.cn --manual --preferred-challenges dns			
			
		
			
[root@netkiller ~]# certbot certonly --manual -d *.netkiller.cn
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Enter email address (used for urgent renewal and security notices)
 (Enter 'c' to cancel): netkiller@msn.com

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Please read the Terms of Service at
https://letsencrypt.org/documents/LE-SA-v1.3-September-21-2022.pdf. You must
agree in order to register with the ACME server. Do you agree?
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(Y)es/(N)o: yes

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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: Y
Account registered.
Requesting a certificate for *.netkiller.cn

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Please deploy a DNS TXT record under the name:

_acme-challenge.netkiller.cn.

with the following value:

u32jWv6ycALqXM3duCLCsCxllrcTLwm9oa42H_GPzSM

Before continuing, verify the TXT record has been deployed. Depending on the DNS
provider, this may take some time, from a few seconds to multiple minutes. You can
check if it has finished deploying with aid of online tools, such as the Google
Admin Toolbox: https://toolbox.googleapps.com/apps/dig/#TXT/_acme-challenge.netkiller.cn.
Look for one or more bolded line(s) below the line ';ANSWER'. It should show the
value(s) you've just added.

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Press Enter to Continue

Successfully received certificate.
Certificate is saved at: /etc/letsencrypt/live/netkiller.cn/fullchain.pem
Key is saved at:         /etc/letsencrypt/live/netkiller.cn/privkey.pem
This certificate expires on 2023-11-06.
These files will be updated when the certificate renews.

NEXT STEPS:
- This certificate will not be renewed automatically. Autorenewal of --manual certificates requires the use of an authentication hook script (--manual-auth-hook) but one was not provided. To renew this certificate, repeat this same certbot command before the certificate's expiry date.

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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
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配置 Nginx

			
server {
    listen 443 ssl;
    server_name  www.netkiller.cn;
    http2 on;
    
    # 这里是你证书的位置
    ssl_certificate /etc/letsencrypt/live/netkiller.cn/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/netkiller.cn/privkey.pem;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
    ssl_prefer_server_ciphers on;

    location / {
      	root /usr/share/nginx/html;
      	index  index.html;
    }

    error_page 404 /404.html;
        location = /40x.html {
    }

    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}