extend letsencrypt certificate with dns challenge

Assuming the domain name is yulrizka.com and the certificate was created with

$ certbot certonly --standalone --preferred-challenges dns -d yulrizka.com

To extend this certificate with DNS challenge

# certbot -d yulrizka.com --manual --preferred-challenges dns certonly

You will be asked to add TXT record of _acme-challenge.yulrizka.com.

After updating that DNS record, wait couple of minutes and proceed.

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