How to set up HTTPS service? Applying for a free HTTPS certificate also describes how to apply for a free HTTPS certificate, but it is generated by specifying a separate domain name, not for a wildcard domain name.

What is a wildcard domain name

*.liveqing.com

Indicates that all subdomains of Liveqing are included

The wildcard certificate is generated

(1) According to the previous blog post, after preparation, execute the following request command

./letsencrypt/letsencrypt-auto  certonly  -d *.liveqing.com  --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory
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(2) After the execution begins, enter two y as prompted, and you will see

Please deploy a DNS TXT record under the name

_acme-challenge.liveqing.com with the following value:

3W68emyKk3edfNj6rZFZqXqzYz_omgUafV9KjCUlPRI

Before continuing, verify the record is deployed.

(3) At this time, keep the interface unchanged and go to the domain name server for configuration. We are using the aliyun server here.



(4) Don’t worry after adding records, wait for them to take effect

To check whether the command takes effect in CMD, run the following command

nslookup -qt=txt _acme-challenge.liveqing.com
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If the following information is displayed, it takes effect



(5) Return to the interface of step (2)

Press The Enter key to continue the execution, the successful execution will inform the generated certificate path, at this point, the success

Results show

For more information

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