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Add description for RFC2136 env vars (#385)

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This commit is contained in:
jraby 2017-04-25 22:01:22 -04:00 committed by Matt Holt
parent 5dfe609afb
commit b1fd84c6ff
1 changed files with 7 additions and 5 deletions
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12
providers/dns/rfc2136/rfc2136.go
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@ -23,11 +23,13 @@ type DNSProvider struct {
}
// NewDNSProvider returns a DNSProvider instance configured for rfc2136
// dynamic update. Credentials must be passed in the environment variables:
// RFC2136_NAMESERVER, RFC2136_TSIG_ALGORITHM, RFC2136_TSIG_KEY and
// RFC2136_TSIG_SECRET. To disable TSIG authentication, leave the TSIG
// variables unset. RFC2136_NAMESERVER must be a network address in the form
// "host" or "host:port".
// dynamic update. Credentials must be passed in environment variables:
// RFC2136_NAMESERVER: Network address in the form "host" or "host:port".
// RFC2136_TSIG_ALGORITHM: Defaults to hmac-md5.sig-alg.reg.int. (HMAC-MD5).
// See https://github.com/miekg/dns/blob/master/tsig.go for supported values.
// RFC2136_TSIG_KEY: Name of the secret key as defined in DNS server configuration.
// RFC2136_TSIG_SECRET: Secret key payload.
// To disable TSIG authentication, leave the RFC2136_TSIG* variables unset.
func NewDNSProvider() (*DNSProvider, error) {
nameserver := os.Getenv("RFC2136_NAMESERVER")
tsigAlgorithm := os.Getenv("RFC2136_TSIG_ALGORITHM")