I can confirm many "flush" commands are not replicated within Galera cluster, but written to the binary log with GTID of local percona33 mysql> select @@version, @@version_comment; +--------------------+---------------------------------------------------------------------------------------------------+ | @@version | @@version_comment | +--------------------+---------------------------------------------------------------------------------------------------+ | 5.6.22-72.0-56-log | Percona XtraDB Cluster (GPL), Release rel72.0, Revision 964, WSREP version 25.8, wsrep_25.8.r4150 | +--------------------+---------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec) percona33 mysql> select @@server_uuid; +--------------------------------------+ | @@server_uuid | +--------------------------------------+ | 18febdb4-bb42-11e4-a3ff-080027079e3d | +--------------------------------------+ 1 row in set (0.00 sec) percona33 mysql> show binlog events in 'percona33-bin.000002'; +----------------------+-----+----------------+-----------+-------------+-----------------------------------------------+ | Log_name | Pos | Event_type | Server_id | End_log_pos | Info | +----------------------+-----+----------------+-----------+-------------+-----------------------------------------------+ | percona33-bin.000002 | 4 | Format_desc | 33 | 120 | Server ver: 5.6.22-72.0-56-log, Binlog ver: 4 | | percona33-bin.000002 | 120 | Previous_gtids | 33 | 191 | bfa44ec0-55bd-ee1b-6916-25822fb94622:1-5 | +----------------------+-----+----------------+-----------+-------------+-----------------------------------------------+ 2 rows in set (0.00 sec) percona33 mysql> insert into test.t1 values (null); Query OK, 1 row affected (0.07 sec) percona33 mysql> show binlog events in 'percona33-bin.000002'; +----------------------+-----+----------------+-----------+-------------+-------------------------------------------------------------------+ | Log_name | Pos | Event_type | Server_id | End_log_pos | Info | +----------------------+-----+----------------+-----------+-------------+-------------------------------------------------------------------+ | percona33-bin.000002 | 4 | Format_desc | 33 | 120 | Server ver: 5.6.22-72.0-56-log, Binlog ver: 4 | | percona33-bin.000002 | 120 | Previous_gtids | 33 | 191 | bfa44ec0-55bd-ee1b-6916-25822fb94622:1-5 | | percona33-bin.000002 | 191 | Gtid | 33 | 239 | SET @@SESSION.GTID_NEXT= 'bfa44ec0-55bd-ee1b-6916-25822fb94622:6' | | percona33-bin.000002 | 239 | Query | 33 | 312 | BEGIN | | percona33-bin.000002 | 312 | Table_map | 33 | 357 | table_id: 70 (test.t1) | | percona33-bin.000002 | 357 | Write_rows | 33 | 397 | table_id: 70 flags: STMT_END_F | | percona33-bin.000002 | 397 | Xid | 33 | 428 | COMMIT /* xid=3348 */ | +----------------------+-----+----------------+-----------+-------------+-------------------------------------------------------------------+ 7 rows in set (0.00 sec) percona33 mysql> select @@global.gtid_executed\G *************************** 1. row *************************** @@global.gtid_executed: bfa44ec0-55bd-ee1b-6916-25822fb94622:1-6 1 row in set (0.00 sec) percona33 mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) percona33 mysql> select @@global.gtid_executed\G *************************** 1. row *************************** @@global.gtid_executed: 18febdb4-bb42-11e4-a3ff-080027079e3d:1, bfa44ec0-55bd-ee1b-6916-25822fb94622:1-6 1 row in set (0.00 sec) and also other FLUSH commands: percona33 mysql> show binlog events in 'percona33-bin.000002'; +----------------------+-----+----------------+-----------+-------------+-------------------------------------------------------------------+ | Log_name | Pos | Event_type | Server_id | End_log_pos | Info | +----------------------+-----+----------------+-----------+-------------+-------------------------------------------------------------------+ | percona33-bin.000002 | 4 | Format_desc | 33 | 120 | Server ver: 5.6.22-72.0-56-log, Binlog ver: 4 | | percona33-bin.000002 | 120 | Previous_gtids | 33 | 191 | bfa44ec0-55bd-ee1b-6916-25822fb94622:1-5 | | percona33-bin.000002 | 191 | Gtid | 33 | 239 | SET @@SESSION.GTID_NEXT= 'bfa44ec0-55bd-ee1b-6916-25822fb94622:6' | | percona33-bin.000002 | 239 | Query | 33 | 312 | BEGIN | | percona33-bin.000002 | 312 | Table_map | 33 | 357 | table_id: 70 (test.t1) | | percona33-bin.000002 | 357 | Write_rows | 33 | 397 | table_id: 70 flags: STMT_END_F | | percona33-bin.000002 | 397 | Xid | 33 | 428 | COMMIT /* xid=3348 */ | | percona33-bin.000002 | 428 | Gtid | 33 | 476 | SET @@SESSION.GTID_NEXT= '18febdb4-bb42-11e4-a3ff-080027079e3d:1' | | percona33-bin.000002 | 476 | Query | 33 | 560 | flush privileges | | percona33-bin.000002 | 560 | Gtid | 33 | 608 | SET @@SESSION.GTID_NEXT= '18febdb4-bb42-11e4-a3ff-080027079e3d:2' | | percona33-bin.000002 | 608 | Query | 33 | 687 | flush hosts | | percona33-bin.000002 | 687 | Gtid | 33 | 735 | SET @@SESSION.GTID_NEXT= '18febdb4-bb42-11e4-a3ff-080027079e3d:3' | | percona33-bin.000002 | 735 | Query | 33 | 815 | flush status | | percona33-bin.000002 | 815 | Gtid | 33 | 863 | SET @@SESSION.GTID_NEXT= '18febdb4-bb42-11e4-a3ff-080027079e3d:4' | | percona33-bin.000002 | 863 | Query | 33 | 943 | flush tables | | percona33-bin.000002 | 943 | Gtid | 33 | 991 | SET @@SESSION.GTID_NEXT= '18febdb4-bb42-11e4-a3ff-080027079e3d:5' | | percona33-bin.000002 | 991 | Query | 33 | 1079 | flush USER_RESOURCES | +----------------------+-----+----------------+-----------+-------------+-------------------------------------------------------------------+ 17 rows in set (0.00 sec) percona33 mysql> select @@global.gtid_executed\G *************************** 1. row *************************** @@global.gtid_executed: 18febdb4-bb42-11e4-a3ff-080027079e3d:1-5, bfa44ec0-55bd-ee1b-6916-25822fb94622:1-6 1 row in set (0.00 sec)