connection node_2;
connection node_1;
connection node_1;
connection node_2;
connection node_3;
connection node_1;
CREATE TABLE test.t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(1)) ENGINE=InnoDB;
connection node_2; SET GLOBAL wsrep_on=OFF;
INSERT INTO t1 VALUES (1, 'a'); SET GLOBAL wsrep_on=ON;
LOCK TABLE t1 WRITE;
connection node_1;
INSERT INTO t1 VALUES (1, 'b'); SET GLOBAL wsrep_provider_options = 'gmcast.isolate=1'; SET SESSION wsrep_sync_wait=0;
connection node_3;
SHOW STATUS LIKE 'wsrep_cluster_size';
Variable_name Value
wsrep_cluster_size 2
SHOW STATUS LIKE 'wsrep_cluster_status';
Variable_name Value
wsrep_cluster_status Primary
connection node_2;
UNLOCK TABLES; SET SESSION wsrep_on = ON; SET SESSION wsrep_sync_wait = 15;
connection node_1;
SHOW STATUS LIKE 'wsrep_cluster_status';
Variable_name Value
wsrep_cluster_status non-Primary
SHOW STATUS LIKE 'wsrep_cluster_size';
Variable_name Value
wsrep_cluster_size 1
connection node_2; SET SESSION wsrep_sync_wait=0;
SHOW STATUS LIKE 'wsrep_cluster_status';
Variable_name Value
wsrep_cluster_status Disconnected
SHOW STATUS LIKE 'wsrep_cluster_size';
Variable_name Value
wsrep_cluster_size 0 SET GLOBAL wsrep_on=OFF;
SELECT * FROM t1;
f1 f2 1 a
connection node_3; SET SESSION wsrep_sync_wait=0;
SHOW STATUS LIKE 'wsrep_cluster_status';
Variable_name Value
wsrep_cluster_status Primary
SHOW STATUS LIKE 'wsrep_cluster_size';
Variable_name Value
wsrep_cluster_size 1
SELECT * FROM t1;
f1 f2 1 b
# reconnect node #1
connection node_1; SET GLOBAL wsrep_provider_options = 'gmcast.isolate=0';
# reconnect node #2
connection node_2;
# restart
SHOW STATUS LIKE 'wsrep_cluster_status';
Variable_name Value
wsrep_cluster_status Primary
SHOW STATUS LIKE 'wsrep_cluster_size';
Variable_name Value
wsrep_cluster_size 3
SELECT * FROM t1;
f1 f2 1 b
connection node_1;
SELECT * FROM t1;
f1 f2 1 b
connection node_2;
SELECT * FROM t1;
f1 f2 1 b
connection node_3;
SELECT * FROM t1;
f1 f2 1 b
DROP TABLE t1;
connection node_2;
CALL mtr.add_suppression("Slave SQL: Could not execute Write_rows event on table test.t1; Duplicate entry '1' for key 'PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log FIRST, end_log_pos (.*), Error_code: 1062");
CALL mtr.add_suppression("WSREP: Event (.*) Write_rows_v1 apply failed: 121, seqno ");
CALL mtr.add_suppression("WSREP: Inconsistency detected: Inconsistent by consensus on ");
CALL mtr.add_suppression("Plugin 'InnoDB' will be forced to shutdown");
CALL mtr.add_suppression("WSREP: Failed to apply write set: ");
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-08)
¤
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