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Set SOA record TTL as min of TTL/MINIMUM (#2295)

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* Set SOA record TTL as min of TTL/MINIMUM

According to
https://tools.ietf.org/html/rfc2308#section-3:

  The TTL of this record is set from the minimum
  of the MINIMUM field of the SOA record and the
  TTL of the SOA itself, and indicates how long a
  resolver may cache the negative answer.

Set the TTL accordingly so as to not always
negative cache SOA records for 300 seconds.

* Inline min func

* Update SOA record tests

* Fix types
This commit is contained in:
stuart nelson 2018-11-16 14:42:49 +01:00 • committed by Chris O'Haver
parent 3f6dfba1f0
commit 8dbe1fbee2
9 changed files with 43 additions and 37 deletions
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4
plugin/kubernetes/handler_pod_disabled_test.go
View file

@ -15,14 +15,14 @@ var podModeDisabledCases = []test.Case{
Qname: "10-240-0-1.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
test.SOA("cluster.local. 30 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
},
},
{
Qname: "172-0-0-2.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
test.SOA("cluster.local. 30 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
},
},
}