delegating to 127.0.0.1

go/cmd/gh-ost/main.go

@@ -44,7 +44,6 @@ func acceptSignals(migrationContext *base.MigrationContext) {
 // main is the application's entry point. It will either spawn a CLI or HTTP interfaces.
 func main() {
 	migrationContext := base.NewMigrationContext()
-
 	flag.StringVar(&migrationContext.InspectorConnectionConfig.Key.Hostname, "host", "127.0.0.1", "MySQL hostname (preferably a replica, not the master)")
 	flag.StringVar(&migrationContext.AssumeMasterHostname, "assume-master-host", "", "(optional) explicitly tell gh-ost the identity of the master. Format: some.host.com[:port] This is useful in master-master setups where you wish to pick an explicit master, or in a tungsten-replicator where gh-ost is unable to determine the master")
 	flag.IntVar(&migrationContext.InspectorConnectionConfig.Key.Port, "port", 3306, "MySQL port (preferably a replica, not the master)")

localtests/test.sh

@@ -26,6 +26,7 @@ verify_master_and_replica() {
     exit 1
   fi
   read master_host master_port <<< $(gh-ost-test-mysql-master -e "select @@hostname, @@port" -ss)
+  [ "$master_host" == "$(hostname)" ] && master_host="127.0.0.1"
   echo "# master verified at $master_host:$master_port"
   if [ "$(gh-ost-test-mysql-replica -e "select 1" -ss)" != "1" ] ; then
     echo "Cannot verify gh-ost-test-mysql-replica"
@@ -36,6 +37,7 @@ verify_master_and_replica() {
     exit 1
   fi
   read replica_host replica_port <<< $(gh-ost-test-mysql-replica -e "select @@hostname, @@port" -ss)
+  [ "$replica_host" == "$(hostname)" ] && replica_host="127.0.0.1"
   echo "# replica verified at $replica_host:$replica_port"
 }
 
@@ -100,6 +102,7 @@ test_single() {
     --password=gh-ost \
     --host=$replica_host \
     --port=$replica_port \
+    --assume-master-host=${master_host}:${master_port}
     --database=test \
     --table=gh_ost_test \
     --alter='engine=innodb' \