一。前期准备
机器A:ip地址 192.168.1.210 (maste1)
机器B:ip地址 192.168.1.211 (master2)
机器A同时充当Slave角色,为便于区分,名称设为 Slave2
机器B同时充当Slave角色,为便于区分,名称设为 Slave1
假设两台机器都已经安装好mysql,安装路径假设/usr/local/mysql/下,并假设
mysql配置文件my.cnf存放在/etc/下
二。修改机器A中mysql配置文件/etc/my.cnf
在[mysqld]配置段添加如下字段
binlog-do-db= wywdb # 指明欲同步数据库
binlog-ignore-db=mysql # 指明不需要同步数据库
binlog-ignore-db=test # 指明不需要同步数据库
并假设次server id 为1,即
server-id=1
在机器A,即master1上为机器B,即slave1添加一同步帐号
grant replication slave on *.* to identified by ’slave’;
然后重启A机器mysql
三。修改B机器中mysql配置文件
同样在[mysqld]字段下添加如下内容
server-id=2
master-host = 192.168.1.210
master-user = replication
master-password = slave
master-port = 3306
然后重启B机器mysql
四。在B中进入mysql
mysql> start slave;
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.210
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 98
Relay_Log_File: webserver-relay-bin.000004
Relay_Log_Pos: 235
Relay_Master_Log_File: mysql-bin.000003
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: 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)
ERROR:
No query specified
将显示以上同步信息,其中Slave_IO_Running和Slave_SQL_Running对应字段内容都为yes,
并且Slave_IO_State显示“Waiting for master to send event”,则表示mysql的Master和Slave
模式配置成功,否则表示不成功,可查看相应日志,查看什么地方出现了问题。
此时还可可进去A机器中查看master1的mysql同步信息,并可与B机器mysql对比。
在A机器中进入mysql:
mysql> show master status;
+——————+———-+————–+——————+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000003 | 98 | wywdb | mysql,test |
+——————+———-+————–+——————+
1 row in set (0.00 sec)
五。在机器B中为其增加一同步复制帐号
mysql> grant replication slave on *.* to identified by ’slave2′;
并修改A中mysql的配置文件
在[mysqld]增加如下内容
master-host = 192.168.1.211
master-user = replication
master-password = slave2
master-port = 3306
六。依次重启A和B中mysql
进A中mysql
mysql> start slave;
然后可以查看同步情况
进入A中:
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.211
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 98
Relay_Log_File: centos-relay-bin.000005
Relay_Log_Pos: 235
Relay_Master_Log_File: mysql-bin.000004
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: 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)
ERROR:
No query specified
mysql> show master status;
+——————+———-+————–+——————+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000004 | 98 | wywdb | mysql,test |
+——————+———-+————–+——————+
1 row in set (0.00 sec)
在B中:
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.210
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 98
Relay_Log_File: webserver-relay-bin.000007
Relay_Log_Pos: 235
Relay_Master_Log_File: mysql-bin.000004
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: 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)
ERROR:
No query specified
mysql> show master status;
+——————+———-+————–+——————+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000004 | 98 | wywdb | |
+——————+———-+————–+——————+
1 row in set (0.00 sec)
看到如上信息证明mysql的master和master模式同步配置成功。
七。简单同步验证测试
在A中
mysql> use wywdb
Database changed
mysql> create table test(id int,name varchar(20));
Query OK, 0 rows affected (0.03 sec)
mysql> insert into test values(1,’wanzhihua’);
Query OK, 1 row affected (0.00 sec)
mysql> select * from test;
+——+———–+
| id | name |
+——+———–+
| 1 | wanzhihua |
+——+———–+
1 row in set (0.01 sec)
然后进入B中
mysql> use wywdb
Database changed
mysql> select * from test;
+——+———–+
| id | name |
+——+———–+
| 1 | wanzhihua |
+——+———–+
1 row in set (0.00 sec)
证明A--->B同步成功
接着
mysql> insert into test values (2, ’shenyanfei’);
Query OK, 1 row affected (0.00 sec)
mysql> select * from test;
+——+————+
| id | name |
+——+————+
| 1 | wanzhihua |
| 2 | shenyanfei |
+——+————+
2 rows in set (0.01 sec)
然后进去A中
mysql> select * from test;
+——+————+
| id | name |
+——+————+
| 1 | wanzhihua |
| 2 | shenyanfei |
+——+————+
2 rows in set (0.00 sec)
证明AB互为同步成功。
后继:本文只是安装过程,对自增长,存储引擎,索引等没有详加阐述
,如需要,则需根据自身实际情况在次基础上作些修改。
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