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《MySQL性能調優與架構設計》

環境：

• 主數據庫master，本地win7，192.168.1.102
• 從數據庫slave，虛擬機CentOS，192.168.56.1

1. 修改主從數據庫配置

修改master數據庫

（my.ini的局部 ）

[mysqld]
log-bin=mysql-bin   #[必須]啟用二進制日誌
server-id=1      #[必須]服務器唯一ID，默認是1，一般取IP最後一段
# binlog-do-db=testbbc   #[可選]指定需要同步的數據庫

修改slave數據庫

（my.cnf的局部）

log-bin=mysql-bin   #[不是必須]啟用二進制日誌
server-id=2      #[必須]服務器唯一ID，默認是1，一般取IP最後一段
# binlog-do-db=testbbc #[可選]//同步數據庫

重啟主從數據庫

2. 配置主從數據庫

登錄master數據庫，給slave數據庫授權

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數據庫的狀態

mysql> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |      333 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

# 這裏需要記錄 File 以及 Position 的值，在操作從服務器時會用到

配置slave服務器

# 執行同步SQL語句
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)

# 啟動同步進程
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)

# 主從同步檢查
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: 0
Master_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: 1
1 row in set (0.00 sec)

# 可以看到：Slave_IO_Running | Slave_SQL_Running兩個值都是YES，說明配置成功了

3. 主從數據庫測試

主數據庫創建數據庫，並在這個庫建表，插入一條記錄

mysql> create database test_db;
Query OK, 1 row affected (0.00 sec)

mysql> use test_db;
Database changed

mysql> 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)

分別查看主從數據庫

# 主數據庫
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)

# 從數據庫
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
| test_db            |
+--------------------+
5 rows in set (0.02 sec)

mysql> use test_db;
Database changed
mysql> select * from test_tb;
+------+------+
| id   | name |
+------+------+
|    1 | aaaa |
+------+------+
1 row in set (0.00 sec)

結果主從數據庫都有test_db和test_tb表以及表數據，說明主從數據庫配置成功！！！

MySQL主從配置