connection node_2;
connection node_1;
SELECT @@wsrep_mode;
@@wsrep_mode

SET GLOBAL wsrep_mode=DEFAULT;
SELECT @@wsrep_mode;
@@wsrep_mode

SET SESSION wsrep_mode=DEFAULT;
ERROR HY000: Variable 'wsrep_mode' is a GLOBAL variable and should be set with SET GLOBAL
SELECT @@global.wsrep_mode;
@@global.wsrep_mode

SELECT @@session.wsrep_mode;
ERROR HY000: Variable 'wsrep_mode' is a GLOBAL variable
SET GLOBAL wsrep_mode=A;
ERROR 42000: Variable 'wsrep_mode' can't be set to the value of 'A'
SET GLOBAL wsrep_mode='A';
ERROR 42000: Variable 'wsrep_mode' can't be set to the value of 'A'
SET GLOBAL wsrep_mode=NULL;
ERROR 42000: Variable 'wsrep_mode' can't be set to the value of 'NULL'
SET GLOBAL wsrep_mode=128;
ERROR 42000: Variable 'wsrep_mode' can't be set to the value of '128'
SET GLOBAL wsrep_mode=REQUIRED_PRIMARY_KEY,REPLICATE_MYISAM;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
SET GLOBAL wsrep_mode=1;
SELECT @@wsrep_mode;
@@wsrep_mode
STRICT_REPLICATION
SET GLOBAL wsrep_mode=32;
SELECT @@wsrep_mode;
@@wsrep_mode
DISALLOW_LOCAL_GTID
SET GLOBAL wsrep_mode='';
SELECT @@wsrep_mode;
@@wsrep_mode

SET GLOBAL wsrep_mode=STRICT_REPLICATION;
SELECT @@wsrep_mode;
@@wsrep_mode
STRICT_REPLICATION
SET GLOBAL wsrep_mode=BINLOG_ROW_FORMAT_ONLY;
SELECT @@wsrep_mode;
@@wsrep_mode
BINLOG_ROW_FORMAT_ONLY
SET GLOBAL wsrep_mode=REQUIRED_PRIMARY_KEY;
SELECT @@wsrep_mode;
@@wsrep_mode
REQUIRED_PRIMARY_KEY
SET GLOBAL wsrep_mode=REPLICATE_MYISAM;
SELECT @@wsrep_mode;
@@wsrep_mode
REPLICATE_MYISAM
SET GLOBAL wsrep_mode=REPLICATE_ARIA;
SELECT @@wsrep_mode;
@@wsrep_mode
REPLICATE_ARIA
SET GLOBAL wsrep_mode=DISALLOW_LOCAL_GTID;
SELECT @@wsrep_mode;
@@wsrep_mode
DISALLOW_LOCAL_GTID
SET GLOBAL wsrep_mode='STRICT_REPLICATION,BINLOG_ROW_FORMAT_ONLY';
SELECT @@wsrep_mode;
@@wsrep_mode
STRICT_REPLICATION,BINLOG_ROW_FORMAT_ONLY
SET GLOBAL wsrep_mode='STRICT_REPLICATION,BINLOG_ROW_FORMAT_ONLY,REQUIRED_PRIMARY_KEY,REPLICATE_MYISAM,REPLICATE_ARIA,DISALLOW_LOCAL_GTID';
SELECT @@wsrep_mode;
@@wsrep_mode
STRICT_REPLICATION,BINLOG_ROW_FORMAT_ONLY,REQUIRED_PRIMARY_KEY,REPLICATE_MYISAM,REPLICATE_ARIA,DISALLOW_LOCAL_GTID
SET GLOBAL wsrep_mode='BINLOG_ROW_FORMAT_ONLY,STRICT_REPLICATION';
SELECT @@wsrep_mode;
@@wsrep_mode
STRICT_REPLICATION,BINLOG_ROW_FORMAT_ONLY
SET GLOBAL wsrep_mode='STRICT_REPLICATION,REQUIRED_PRIMARY_KEY,REPLICATE_ARIA,DISALLOW_LOCAL_GTID';
SELECT @@wsrep_mode;
@@wsrep_mode
STRICT_REPLICATION,REQUIRED_PRIMARY_KEY,REPLICATE_ARIA,DISALLOW_LOCAL_GTID
SET GLOBAL wsrep_mode=DEFAULT;