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title date draft slug dnsprovider
RFC2136 2019-03-03T16:39:46+01:00 false rfc2136
since code url
v0.3.0 rfc2136 https://www.rfc-editor.org/rfc/rfc2136.html

Configuration for RFC2136.

  • Code: rfc2136
  • Since: v0.3.0

Here is an example bash command using the RFC2136 provider:

RFC2136_NAMESERVER=127.0.0.1 \
RFC2136_TSIG_KEY=lego \
RFC2136_TSIG_ALGORITHM=hmac-sha256. \
RFC2136_TSIG_SECRET=YWJjZGVmZGdoaWprbG1ub3BxcnN0dXZ3eHl6MTIzNDU= \
lego --email you@example.com --dns rfc2136 --domains my.example.org run

## ---

keyname=lego; keyfile=lego.key; tsig-keygen $keyname > $keyfile

RFC2136_NAMESERVER=127.0.0.1 \
RFC2136_TSIG_KEY="$keyname" \
RFC2136_TSIG_ALGORITHM="$( awk -F'[ ";]' '/algorithm/ { print $2 }' $keyfile )." \
RFC2136_TSIG_SECRET="$( awk -F'[ ";]' '/secret/ { print $3 }' $keyfile )" \
lego --email you@example.com --dns rfc2136 --domains my.example.org run

Credentials

Environment Variable Name Description
RFC2136_NAMESERVER Network address in the form "host" or "host:port"
RFC2136_TSIG_ALGORITHM TSIG algorithm. See miekg/dns#tsig.go for supported values. To disable TSIG authentication, leave the RFC2136_TSIG* variables unset.
RFC2136_TSIG_KEY Name of the secret key as defined in DNS server configuration. To disable TSIG authentication, leave the RFC2136_TSIG* variables unset.
RFC2136_TSIG_SECRET Secret key payload. To disable TSIG authentication, leave the RFC2136_TSIG* variables unset.

The environment variable names can be suffixed by _FILE to reference a file instead of a value. More information [here]({{< ref "dns#configuration-and-credentials" >}}).

Additional Configuration

Environment Variable Name Description
RFC2136_DNS_TIMEOUT API request timeout
RFC2136_POLLING_INTERVAL Time between DNS propagation check
RFC2136_PROPAGATION_TIMEOUT Maximum waiting time for DNS propagation
RFC2136_SEQUENCE_INTERVAL Time between sequential requests
RFC2136_TTL The TTL of the TXT record used for the DNS challenge

The environment variable names can be suffixed by _FILE to reference a file instead of a value. More information [here]({{< ref "dns#configuration-and-credentials" >}}).

More information