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change master 'abc' to relay_log_file='';
ERROR HY000: Failed initializing relay log position: Could not find target log during relay log initialization
change master 'abc2' to master_host='';
ERROR HY000: Incorrect arguments to MASTER_HOST
change master 'master1' to
master_port=MYPORT_1,
master_host='127.0.0.1',
master_user='root';
start slave 'master1';
set default_master_connection = 'master1';
include/wait_for_slave_to_start.inc
show slave 'master1' status;
Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id Using_Gtid
Waiting for master to send event 127.0.0.1 root MYPORT_1 60 master-bin.000001 311 mysqld-relay-bin-master1.000002 599 master-bin.000001 Yes Yes 0 0 311 905 None 0 No 0 No 0 0 1 0
show slave status;
Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id Using_Gtid
Waiting for master to send event 127.0.0.1 root MYPORT_1 60 master-bin.000001 311 mysqld-relay-bin-master1.000002 599 master-bin.000001 Yes Yes 0 0 311 905 None 0 No 0 No 0 0 1 0
show all slaves status;
Connection_name Slave_SQL_State Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id Using_Gtid Retried_transactions Max_relay_log_size Executed_log_entries Slave_received_heartbeats Slave_heartbeat_period Gtid_Pos
master1 Slave has read all relay log; waiting for the slave I/O thread to update it Waiting for master to send event 127.0.0.1 root MYPORT_1 60 master-bin.000001 311 mysqld-relay-bin-master1.000002 599 master-bin.000001 Yes Yes 0 0 311 905 None 0 No 0 No 0 0 1 0 0 1073741824 7 0 60.000
drop database if exists db1;
create database db1;
use db1;
create table t1 (i int auto_increment, f1 varchar(16), primary key pk (i,f1)) engine=MyISAM;
insert into t1 (f1) values ('one'),('two');
select * from db1.t1;
i f1
1 one
2 two
# List of relay log files in the datadir
mysqld-relay-bin-master1.000001
mysqld-relay-bin-master1.000002
mysqld-relay-bin-master1.index
show relaylog events;
Log_name Pos Event_type Server_id End_log_pos Info
mysqld-relay-bin-master1.000001 4 Format_desc 3 248 Server version
mysqld-relay-bin-master1.000001 248 Rotate 3 306 mysqld-relay-bin-master1.000002;pos=4
show relaylog events in 'mysqld-relay-bin-master1.000002';
Log_name Pos Event_type Server_id End_log_pos Info
mysqld-relay-bin-master1.000002 4 Format_desc 3 248 Server version
mysqld-relay-bin-master1.000002 248 Rotate 1 0 master-bin.000001;pos=4
mysqld-relay-bin-master1.000002 292 Format_desc 1 248 Server version
mysqld-relay-bin-master1.000002 536 Gtid_list 1 271 []
mysqld-relay-bin-master1.000002 559 Binlog_checkpoint 1 311 master-bin.000001
mysqld-relay-bin-master1.000002 599 Gtid 1 349 GTID 0-1-1
mysqld-relay-bin-master1.000002 637 Query 1 438 drop database if exists db1
mysqld-relay-bin-master1.000002 726 Gtid 1 476 GTID 0-1-2
mysqld-relay-bin-master1.000002 764 Query 1 557 create database db1
mysqld-relay-bin-master1.000002 845 Gtid 1 595 GTID 0-1-3
mysqld-relay-bin-master1.000002 883 Query 1 748 use `db1`; create table t1 (i int auto_increment, f1 varchar(16), primary key pk (i,f1)) engine=MyISAM
mysqld-relay-bin-master1.000002 1036 Gtid 1 786 BEGIN GTID 0-1-4
mysqld-relay-bin-master1.000002 1074 Intvar 1 814 INSERT_ID=1
mysqld-relay-bin-master1.000002 1102 Query 1 918 use `db1`; insert into t1 (f1) values ('one'),('two')
mysqld-relay-bin-master1.000002 1206 Query 1 986 COMMIT
change master 'master1' to
master_port=MYPORT_2,
master_host='127.0.0.1',
master_user='root';
ERROR HY000: This operation cannot be performed as you have a running slave 'master1'; run STOP SLAVE 'master1' first
change master to
master_port=MYPORT_2,
master_host='127.0.0.1',
master_user='root';
ERROR HY000: This operation cannot be performed as you have a running slave 'master1'; run STOP SLAVE 'master1' first
change master 'master2' to
master_port=MYPORT_1,
master_host='127.0.0.1',
master_user='root';
ERROR HY000: Connection 'master2' conflicts with existing connection 'master1'
set default_master_connection = '';
change master to
master_port=MYPORT_2,
master_host='127.0.0.1',
master_user='root';
start slave;
include/wait_for_slave_to_start.inc
show all slaves status;
Connection_name Slave_SQL_State Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id Using_Gtid Retried_transactions Max_relay_log_size Executed_log_entries Slave_received_heartbeats Slave_heartbeat_period Gtid_Pos
Slave has read all relay log; waiting for the slave I/O thread to update it Waiting for master to send event 127.0.0.1 root MYPORT_2 60 master-bin.000001 311 mysqld-relay-bin.000002 599 master-bin.000001 Yes Yes 0 0 311 897 None 0 No 0 No 0 0 2 0 0 1073741824 7 0 60.000 0-1-4
master1 Slave has read all relay log; waiting for the slave I/O thread to update it Waiting for master to send event 127.0.0.1 root MYPORT_1 60 master-bin.000001 986 mysqld-relay-bin-master1.000002 1274 master-bin.000001 Yes Yes 0 0 986 1580 None 0 No 0 No 0 0 1 0 0 1073741824 17 0 60.000 0-1-4
insert into t1 (f1) values ('three');
drop database if exists db2;
create database db2;
use db2;
create table t1 (pk int auto_increment primary key, f1 int) engine=InnoDB;
begin;
insert into t1 (f1) values (1),(2);
select * from db1.t1;
i f1
1 one
2 two
3 three
select * from db2.t1;
pk f1
commit;
select * from db2.t1;
pk f1
1 1
2 2
flush logs;
purge binary logs to 'master-bin.000002';
show binary logs;
Log_name File_size
master-bin.000002 367
insert into t1 (f1) values ('four');
create table db1.t3 (f1 int) engine=InnoDB;
show all slaves status;
Connection_name Slave_SQL_State Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id Using_Gtid Retried_transactions Max_relay_log_size Executed_log_entries Slave_received_heartbeats Slave_heartbeat_period Gtid_Pos
Slave has read all relay log; waiting for the slave I/O thread to update it Waiting for master to send event 127.0.0.1 root MYPORT_2 60 master-bin.000001 919 mysqld-relay-bin.000002 1207 master-bin.000001 Yes Yes 0 0 919 1505 None 0 No 0 No 0 0 2 0 0 1073741824 17 0 60.000 0-1-7
master1 Slave has read all relay log; waiting for the slave I/O thread to update it Waiting for master to send event 127.0.0.1 root MYPORT_1 60 master-bin.000002 740 mysqld-relay-bin-master1.000004 1028 master-bin.000002 Yes Yes 0 0 740 1378 None 0 No 0 No 0 0 1 0 0 1073741824 37 0 60.000 0-1-7
select * from db1.t1;
i f1
1 one
2 two
3 three
4 four
show relaylog events;
Log_name Pos Event_type Server_id End_log_pos Info
mysqld-relay-bin.000001 4 Format_desc 3 248 Server version
mysqld-relay-bin.000001 248 Rotate 3 298 mysqld-relay-bin.000002;pos=4
show relaylog events in 'mysqld-relay-bin.000002';
Log_name Pos Event_type Server_id End_log_pos Info
mysqld-relay-bin.000002 4 Format_desc 3 248 Server version
mysqld-relay-bin.000002 248 Rotate 2 0 master-bin.000001;pos=4
mysqld-relay-bin.000002 292 Format_desc 2 248 Server version
mysqld-relay-bin.000002 536 Gtid_list 2 271 []
mysqld-relay-bin.000002 559 Binlog_checkpoint 2 311 master-bin.000001
mysqld-relay-bin.000002 599 Gtid 2 349 GTID 0-2-1
mysqld-relay-bin.000002 637 Query 2 438 drop database if exists db2
mysqld-relay-bin.000002 726 Gtid 2 476 GTID 0-2-2
mysqld-relay-bin.000002 764 Query 2 557 create database db2
mysqld-relay-bin.000002 845 Gtid 2 595 GTID 0-2-3
mysqld-relay-bin.000002 883 Query 2 730 use `db2`; create table t1 (pk int auto_increment primary key, f1 int) engine=InnoDB
mysqld-relay-bin.000002 1018 Gtid 2 768 BEGIN GTID 0-2-4
mysqld-relay-bin.000002 1056 Intvar 2 796 INSERT_ID=1
mysqld-relay-bin.000002 1084 Query 2 892 use `db2`; insert into t1 (f1) values (1),(2)
mysqld-relay-bin.000002 1180 Xid 2 919 COMMIT /* xid=<num> */
stop slave io_thread;
show status like 'Slave_running';
Variable_name Value
Slave_running OFF
set default_master_connection = 'master1';
show status like 'Slave_running';
Variable_name Value
Slave_running ON
drop database db1;
drop database db2;
include/reset_master_slave.inc
drop database db1;
include/reset_master_slave.inc
drop database db2;
include/reset_master_slave.inc
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