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MySQL主从配置
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环境：
- 主数据库master，本地win7，192.168.1.102
- 从数据库slave，虚拟机CentOS，192.168.56.1
1. 修改主从数据库配置
修改master数据库
（my.ini的局部 ）
[mysqld]log-bin=mysql-bin #[必须]启用二进制日志server-id=1 #[必须]服务器唯一ID，默认是1，一般取IP最后一段
# binlog-do-db=testbbc #[可选]指定需要同步的数据库
修改slave数据库
（my.cnf的局部）
log-bin=mysql-bin #[不是必须]启用二进制日志server-id=2 #[必须]服务器唯一ID，默认是1，一般取IP最后一段# binlog-do-db=testbbc #[可选]//同步数据库
重启主从数据库
2. 配置主从数据库
登录master数据库，给slave数据库授权
mysql> grant replication slave on *.* to ‘root‘@‘192.168.56.1‘ identified by ‘root‘;Query OK, 0 rows affected (0.00 sec)mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)mysql> select host,user,password from mysql.user;+--------------+------+-------------------------------------------+| host | user | password |+--------------+------+-------------------------------------------+| localhost | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B || 127.0.0.1 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B || ::1 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B || % | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B || 192.168.56.1 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |+--------------+------+-------------------------------------------+5 rows in set (0.00 sec)
查看master数据库的状态
mysql> show master status;+------------------+----------+--------------+------------------+| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+------------------+----------+--------------+------------------+| mysql-bin.000001 | 333 | | |+------------------+----------+--------------+------------------+1 row in set (0.00 sec)# 这里需要记录 File 以及 Position 的值，在操作从服务器时会用到
配置slave服务器
# 执行同步SQL语句mysql> change master to master_host=‘192.168.56.1‘,master_user=‘root‘,master_password=‘root‘,master_log_file=‘mysql-bin.000001‘,master_log_pos=333;Query OK, 0 rows affected (0.06 sec)# 启动同步进程mysql> start slave;Query OK, 0 rows affected (0.00 sec)# 主从同步检查mysql> show slave status \G*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.56.1 Master_User: root Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 333 Relay_Log_File: Centos6-relay-bin.000002 Relay_Log_Pos: 253 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: 333 Relay_Log_Space: 411 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: 0Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 11 row in set (0.00 sec)# 可以看到：Slave_IO_Running | Slave_SQL_Running两个值都是YES，说明配置成功了
3. 主从数据库测试
主数据库创建数据库，并在这个库建表，插入一条记录
mysql> create database test_db;Query OK, 1 row affected (0.00 sec)mysql> use test_db;Database changedmysql> create table test_tb(id int, name varchar(20));Query OK, 0 rows affected (0.06 sec)mysql> insert into test_tb(id,name) values(1, ‘aaaa‘);Query OK, 1 row affected (0.00 sec)
分别查看主从数据库
# 主数据库mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || test || test_db || testbbc |+--------------------+6 rows in set (0.17 sec)mysql> select * from test_tb;+------+------+| id | name |+------+------+| 1 | aaaa |+------+------+1 row in set (0.00 sec)
# 从数据库mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || test || test_db |+--------------------+5 rows in set (0.02 sec)mysql> use test_db;Database changedmysql> select * from test_tb;+------+------+| id | name |+------+------+| 1 | aaaa |+------+------+1 row in set (0.00 sec)
结果主从数据库都有test_db和test_tb表以及表数据，说明主从数据库配置成功！！！
MySQL主从配置
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