Ho questa situazione:
due server mysql.
Nella sezione [mysqld] ho le seguenti "entry":
Sulla macchina vm-pf-db01 ho:
server-id = 1
master-host = vm-pf-db02
master-user = slaveuser
master-password = slavepw
master-port = 3306
Sulla macchina vm-pf-db02 ho:
server-id = 1
master-host = vm-pf-db01
master-user = slaveuser
master-password = slavepw
master-port = 3306
Eseguo su entrambe: "start slave;"
Verificando lo status:
show slave status\G;
sulla vm-pf-db01 ho un errore:
Slave_IO_State:
Master_Host: vm-pf-db02
Master_User: slaveuser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File:
mysql-bin.000007
Read_Master_Log_Pos: 301777644
Relay_Log_File: mysqld-relay-bin.000038
Relay_Log_Pos: 149
Relay_Master_Log_File: mysql-bin.000007
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 301777644
Relay_Log_Space: 348
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary
log: 'log event entry exceeded max_allowed_packet; Increase max_allowed_packet on master'
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.00 sec)
ERROR:
No query specified
mentre la vm-pf-db02 sembra apposto:
Slave_IO_State: Waiting for master to send event
Master_Host: vm-pf-db01
Master_User: slaveuser
Master_Port:
3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000006
Read_Master_Log_Pos: 106
Relay_Log_File: mysqld-relay-bin.000215
Relay_Log_Pos: 251
Relay_Master_Log_File: mysql-bin.000006
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 106
Relay_Log_Space: 552
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert:
No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.01 sec)
ERROR:
No query specified
Effettivamente attivando il "debug" su mysql (\W):
sulla vm-pf-db02 ho:
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)
Note (Code 1254): Slave is already running
ovvero il thread slave è avviato (!).
mentre sulla vm-pf-db01 non mi da alcun warning, ogni volta che lo eseguo,
come se lo slave in realtà non si
avviasse.
Idee??
Ho dato le grant giuste all'utente.
Walter
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