Detect if hub XML-RPC API is running on migrated server

During migration, detect if the Hub XML-RPC API is enabled on the the
migrated server and enable it automatically in such a case without the
need to provide the number of replicas.

mgradm/cmd/migrate/podman/utils.go

@@ -121,7 +121,12 @@ func migrateToPodman(globalFlags *types.GlobalFlags, flags *podmanMigrateFlags,
 		return err
 	}
 
-	if err := hub.EnableHubXmlrpc(flags.HubXmlrpc.Replicas); err != nil {
+	hubReplicas := flags.HubXmlrpc.Replicas
+	if extractedData.HasHubXmlrpcApi {
+		log.Info().Msg(L("Enabling Hub XML-RPC API since it is enabled on the migrated server"))
+		hubReplicas = 1
+	}
+	if err := hub.EnableHubXmlrpc(hubReplicas); err != nil {
 		return err
 	}
 

mgradm/shared/templates/migrateScriptTemplate.go

@@ -95,6 +95,8 @@ grep '^db_password' /etc/rhn/rhn.conf | sed 's/[ \t]//g' >>/var/lib/uyuni-tools/
 grep '^db_name' /etc/rhn/rhn.conf | sed 's/[ \t]//g' >>/var/lib/uyuni-tools/data
 grep '^db_port' /etc/rhn/rhn.conf | sed 's/[ \t]//g' >>/var/lib/uyuni-tools/data
 
+$SSH {{ .SourceFqdn }} sh -c "systemctl list-unit-files | grep hub-xmlrpc-api | grep -q active && echo has_hubxmlrpc=true || echo has_hubxmlrpc=false" >>/var/lib/uyuni-tools/data
+
 echo "Altering configuration for domain resolution..."
 sed 's/report_db_host = {{ .SourceFqdn }}/report_db_host = localhost/' -i /etc/rhn/rhn.conf;
 sed 's/server\.jabber_server/java\.hostname/' -i /etc/rhn/rhn.conf;

shared/utils/inspector_test.go

@@ -19,6 +19,7 @@ db_user=myuser
 db_password=mysecret
 db_name=mydb
 db_port=1234
+has_hubxmlrpc=true
 `
 
 	testDir, cleaner := test_utils.CreateTmpFolder(t)
@@ -39,4 +40,5 @@ db_port=1234
 	test_utils.AssertEquals(t, "Invalid DB password", "mysecret", actual.DbPassword)
 	test_utils.AssertEquals(t, "Invalid DB name", "mydb", actual.DbName)
 	test_utils.AssertEquals(t, "Invalid DB port", 1234, actual.DbPort)
+	test_utils.AssertTrue(t, "HasHubXmlrpcApi should be true", actual.HasHubXmlrpcApi)
 }

shared/utils/utils.go

@@ -41,6 +41,7 @@ var fqdnValid = regexp.MustCompile(`^([a-zA-Z0-9]{1}[a-zA-Z0-9-]{0,62})(\.[a-zA-
 type InspectResult struct {
 	CommonInspectData `mapstructure:",squash"`
 	Timezone          string
+	HasHubXmlrpcApi   bool `mapstructure:"has_hubxmlrpc"`
 }
 
 func checkValueSize(value string, min int, max int) bool {