connection node_2; connection node_1; SELECT VARIABLE_VALUE LIKE '%[::1]%' FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_incoming_addresses'; VARIABLE_VALUE LIKE '%[::1]%' 1 SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'; VARIABLE_VALUE = 3 1 connection node_2; SET GLOBAL wsrep_provider_options='gmcast.isolate=1'; connection node_1; CREATE TABLE t1 (f1 INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB; INSERT INTO t1 VALUES (1); connection node_2; SET GLOBAL wsrep_provider_options='gmcast.isolate=0'; SELECT COUNT(*) AS EXPECT_1 FROM t1; EXPECT_1 1 DROP TABLE t1;