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Valentin Brandl 2018-07-15 21:58:10 +02:00
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@ -14,15 +14,15 @@ I manage most of my domains using my own nameservers, running
(slave). Until now, I've been changing the DNS records by SSHing into (slave). Until now, I've been changing the DNS records by SSHing into
the machine and editing the zonefile by hand. This worked fine since I the machine and editing the zonefile by hand. This worked fine since I
rarely needed to change any DNS records. Then earlier this year, rarely needed to change any DNS records. Then earlier this year,
[LetsEncrypt][0] put the ACME v2 endpoint into production which allows [Let's Encrypt][0] put the ACME v2 endpoint into production which allows
users to obtain wildcard certificates using the DNS challenge. This users to obtain wildcard certificates using the DNS challenge. This
put me into a situation where I needed to create, update and delete put me into a situation where I needed to create, update and delete
DNS records automatically. DNS records automatically.
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The LetsEncrypt HTTP challenge requires the user to make the challenge The ACME HTTP challenge requires the user to make the challenge flag
flag available via HTTP under available via HTTP under
`http://www.example.com/.well-known/acme-challenge`. This way, the `http://www.example.com/.well-known/acme-challenge`. This way, the
ACME endpoint can only verify ownership over a specific subdomain ACME endpoint can only verify ownership over a specific subdomain
(`www.example.com` in this case). The DNS challenge looks for the flag (`www.example.com` in this case). The DNS challenge looks for the flag