Let's Encrypt wildcard certificates - tutorial


letsencrypt just announced new wildcard certificate. It would be great create a new tutorial for it.

Thank you.

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Hey guys I just created one, so ff you still need that …

  • Get certbot greater than 0.23 (I used 0.25 from docker-hub official certbot)
  • Mount /etc/letsencrypt dir [Only for docker]
  • Run certbot certonly --server --agree-tos --manual --preferred-challenges dns -d 'DOMAIN,*.DOMAIN'
  • You’ll be asked to agree about public IP
  • Certbot will ask you to put TXT dns registries in your DNS. In webroot (for simple domains you have to put a file in your nginx/apache server, but now for wildcards you have to really put TXT dns. like:
  • Type | hostname | token | TTL
  • TXT | _acme-challenge.DOMAIN |90lOhB2V......wqY | 1
  • You have to wait a few seconds (and test with $ nslookup -q=txt _acme-challenge.DOMAIN)
  • Then you just hit enter a few times and you will get your cert :D
  • Enjoy

I hope that micro-guide can help you =) Cheers

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