TrueCloudLab/coredns
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Add complete secondary support

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Respond to notifies and allow a secondary to follow the SOA parameters

to update a zone from a primary. Also sprinkle it with logging.



Also extend monitoring to include qtype in more metrics.
This commit is contained in:
Miek Gieben 2016-04-05 10:53:23 +01:00
parent 20e16491ec
commit c961acbb6e
8 changed files with 207 additions and 21 deletions
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22
middleware/file/file.go
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@ -28,7 +28,6 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
if state.QClass() != dns.ClassINET {
return dns.RcodeServerFailure, fmt.Errorf("file: can only deal with ClassINET")
}
qname := state.Name()
zone := middleware.Zones(f.Zones.Names).Matches(qname)
if zone == "" {
@ -41,7 +40,26 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
if z == nil {
return dns.RcodeServerFailure, nil
}
if r.Opcode == dns.OpcodeNotify {
if z.isNotify(state) {
m := new(dns.Msg)
m.SetReply(r)
m.Authoritative, m.RecursionAvailable, m.Compress = true, true, true
w.WriteMsg(m)
if ok, _ := z.shouldTransfer(); ok {
log.Printf("[INFO] Valid notify from %s for %s: initiating transfer", state.IP(), zone)
z.TransferIn()
}
return dns.RcodeSuccess, nil
}
log.Printf("[INFO] Dropping notify from %s for %s", state.IP(), zone)
return dns.RcodeSuccess, nil
}
if z.Expired != nil && *z.Expired {
log.Printf("[ERROR] Zone %s is expired", zone)
return dns.RcodeServerFailure, nil
}
@ -81,7 +99,7 @@ func Parse(f io.Reader, origin, fileName string) (*Zone, error) {
z := NewZone(origin)
for x := range tokens {
if x.Error != nil {
log.Printf("[ERROR] failed to parse %s: %v", origin, x.Error)
log.Printf("[ERROR] Failed to parse %s: %v", origin, x.Error)
return nil, x.Error
}
if x.RR.Header().Rrtype == dns.TypeSOA {