MySQL Replication2015/03/22

	Configure MySQL Replication settings. This configuration is general Master-Slave settings.
[1]	Change settings and create a user for replication on MySQL Matser Host.

[root@www ~]#

vi /etc/my.cnf

[mysqld]

# add follows in [mysqld] section : get binary logs

log-bin=mysql-bin

# define uniq server ID

server-id=101

[root@www ~]#

/etc/rc.d/init.d/mysqld restart

Stopping mysqld:  [  OK  ]
Starting mysqld:  [  OK  ]

[root@www ~]#

mysql -u root -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.73-log Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# create user (set any password for 'password' section)

mysql>

grant replication slave on *.* to replica@'%' identified by 'password';

Query OK, 0 rows affected (0.00 sec)

mysql>

flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql>

exit

Bye

[2]	Install and start MySQL Server on Slave Host, refer to here.
[3]	If IPTables is running on Master Host, allow ports like follows. But if Slave Host has also read accesses, allow service on Slave Host, too, like follows.

[root@www ~]#

iptables -I INPUT 5 -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT

[4]	Change settings on Slave Host.

[root@repl01 ~]#

vi /etc/my.cnf

[mysqld]

# add follows in [mysqld] section : get binary logs

log-bin=mysql-bin

# define server ID (different one from Master Host)

server-id=102

# read only

read_only=1

# define own hostname

report-host=repl01.srv.world

[root@repl01 ~]#

/etc/rc.d/init.d/mysqld restart

Stopping mysqld:  [  OK  ]
Starting mysqld:  [  OK  ]

[5]	Get Dump-Data on Master Host.

[root@www ~]#

mysql -u root -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.73-log Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# lock all tables

mysql>

flush tables with read lock;

Query OK, 0 rows affected (0.00 sec)

# show status (remember File, Position value)

mysql>

show master status;

+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |      539 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

# remain the window above and open the another window and execute dump

[root@www ~]#

mysqldump -u root -p --all-databases --lock-all-tables --events > mysql_dump.sql

Enter password:

# back to the remained window and unlock

mysql>

unlock tables;

Query OK, 0 rows affected (0.00 sec)

mysql>

exit

Bye

# transfer the dump to Slave Host

[root@www ~]#

scp mysql_dump.sql repl01.srv.world:/tmp/

root@repl01.srv.world's password:
mysql_dump.sql 100% 515KB 514.7KB/s 00:00

[6]	Configure replication settings on Slave Host. It's OK all, make sure the settings work normally to create databases on Master Host.

# import dump from Master Host

[root@repl01 ~]#

mysql -u root -p < /tmp/mysql_dump.sql

Enter password:
[root@repl01 ~]#

mysql -u root -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.73-log Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

change master to

master_host='10.0.0.31',

# Master Hosts's IP

master_user='replica',

# replication ID

master_password='password',

# replication ID's password

master_log_file='mysql-bin.000001',

# File value confirmed on Master

master_log_pos=539;

# Position value confirmed on Master

Query OK, 0 rows affected (0.58 sec)

# start replication

mysql>

start slave;

Query OK, 0 rows affected (0.00 sec)

# show status

mysql>

show slave status\G

*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.0.0.31
                  Master_User: replica
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 610
               Relay_Log_File: mysqld-relay-bin.000002
                Relay_Log_Pos: 322
        Relay_Master_Log_File: mysql-bin.000001
             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: 610
              Relay_Log_Space: 478
              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 (0.00 sec)

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