one time CoreDNS file

config/config.go

@@ -48,6 +48,7 @@ type ServerConfig struct {
 	AgentBackend         string `yaml:"agentbackend"`
 	ClientMode           string `yaml:"clientmode"`
 	DNSMode              string `yaml:"dnsmode"`
+	SplitDNS           string `yaml:"splitdns"`
 	DisableRemoteIPCheck string `yaml:"disableremoteipcheck"`
 	DisableDefaultNet    string `yaml:"disabledefaultnet"`
 	GRPCSSL              string `yaml:"grpcssl"`

controllers/dnsHttpController.go

@@ -8,6 +8,7 @@ import (
 	"github.com/gravitl/netmaker/database"
 	"github.com/gravitl/netmaker/functions"
 	"github.com/gravitl/netmaker/models"
+	"github.com/gravitl/netmaker/servercfg"
 	"github.com/txn2/txeh"
 )
 
@@ -161,8 +162,9 @@ func SetDNS() error {
 	if err != nil {
 		return err
 	}
-	err = functions.SetCorefile(corefilestring)
-
+	if servercfg.IsSplitDNS() {
+		err = functions.SetCorefile(corefilestring)
+	}
 	return err
 }
 

functions/local.go

@@ -27,7 +27,7 @@ func SetDNSDir() error {
         }
 		_, err = os.Stat(dir + "/config/dnsconfig/Corefile")
         if os.IsNotExist(err) {
-			err = SetCorefile("example.com")
+			err = SetCorefile(".")
 			if err != nil {
 				PrintUserLog("",err.Error(),0)
 			}

servercfg/serverconf.go

@@ -345,3 +345,13 @@ func GetSQLConn() string {
 	}
 	return sqlconn
 }
+
+func IsSplitDNS() bool {
+	issplit := false
+	if os.Getenv("IS_SPLIT_DNS") == "yes" {
+		issplit = true
+	} else if config.Config.Server.SplitDNS == "yes" {
+		issplit = true
+	}
+	return issplit
+}