Mysql replication

[mrpink]

Hi,

I had configured Mysql in a Master > Slave configuration from a tutorial on here, I have recently moved my backups from the Master to the slave because it was causing issues with the web application when it was backing up the database in the early hours of the morning. What I have realised though when it backs up the slave the amount of data each day is not increasing at all which is obviously not right but it says the replication is working and I can see it on the processlist on the master?

28970723 | replication | db02:34588 | NULL | Binlog Dump | 3067 | Has sent all binlog to slave; waiting for binlog to be updated | NULL

On the slave show slave status shows

Slave_IO_Running: Yes
Slave_SQL_Running: Yes

show processlist on the slave shows

1004 | system user | | NULL | Connect | 241832 | Waiting for master to send event | NULL |
| 1005 | system user | | NULL | Connect | 3240 | Has read all relay log; waiting for the slave I/O thread to update it | NULL

Just doesn't show the host as DB01 its just blank on the slave

Any ideas?

[falko]

What's the full output of

SHOW SLAVE STATUS\G

on the slave?

[mrpink]

Hi

It is

mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: db01
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000136
Read_Master_Log_Pos: 98
Relay_Log_File: slave-relay.001301
Relay_Log_Pos: 235
Relay_Master_Log_File: mysql-bin.000136
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: example_database
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: 98
Relay_Log_Space: 235
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
1 row in set (0.00 sec)


Thanks,
Will

[falko]

Originally Posted by mrpink

mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: db01
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000136
Read_Master_Log_Pos: 98
Relay_Log_File: slave-relay.001301
Relay_Log_Pos: 235
Relay_Master_Log_File: mysql-bin.000136
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: example_database
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: 98
Relay_Log_Space: 235
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
1 row in set (0.00 sec)

Can the slave resolve db01? Might be better to use an IP address instead of db01.

[mrpink]

Hi,

It can yes as its hostname is in /etc/hosts

I can connect with the mysql client also with the replication details