Mirrors/coredns
1
0
Fork 0
mirror of https://github.com/coredns/coredns.git synced 2025-11-02 10:13:14 -05:00
Code Issues Packages Projects Releases Wiki Activity

More grpc LB tweaks

Browse Source 
Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2020-03-30 16:10:07 +02:00
parent 494227d95f
commit fafb347966
2 changed files with 17 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
plugin/traffic/traffic.go
View File

@@ -70,7 +70,7 @@ func (t *Traffic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
}
if strings.HasPrefix(strings.ToLower(labels[0]), "_grpc_config") {
// this is the grpc config blob encoded in a TXT record, see documentation for lbTXT.
m.Answer = txt(state.Zone)
m.Answer = txt(state.Zone, labels[1]) // 1 is the cluster
m.Rcode = dns.RcodeSuccess
w.WriteMsg(m)
return 0, nil
@@ -95,10 +95,16 @@ func (t *Traffic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
w.WriteMsg(m)
return 0, nil
}
// OK, _grcplb._tcp query; we need to return the endpoint for the mgmt cluster *NOT* the cluster
// we got the query for. This should exist, but we'll check later anyway.
cluster = t.mgmt
sockaddr, _ = t.c.Select(cluster, healthy)
// OK, _grcplb._tcp query; we need to return the endpoint for the cluster in this query
cluster = labels[2]
sockaddr, ok = t.c.Select(cluster, healthy)
if !ok {
// nodata error when this cluster doesn't exist.
m.Ns = soa(state.Zone)
m.Rcode = dns.RcodeSuccess
w.WriteMsg(m)
return 0, nil
}
break
default:
m.Ns = soa(state.Zone)