Linux環境下MySQL5.6Master-Slave配置實戰

MySQL的安裝相對於Oracle來說非常簡單，個人覺得與TimesTen的安裝配置更為接近，而且後面的Master-Slave或Master-Master叢集配置更為簡單，甚至比TimesTen的ASP/Active-Active/Active-Standby配置都比TimesTen還要簡單。
Master-Slave搭建步驟：
1、在兩臺主機分別安裝MySQL資料庫軟體
2、在兩臺主機分別建立並初始化MySQL資料庫例項
3、從主庫dump資料(庫)匯入到備庫
4、修改主從(Master-Slave)配置
5、主庫grant、從庫啟動複製(start slave)
6、驗證主備資料同步

--master:
grant replication slave,replication client on *.* to 'slave'@'192.168.100.81' identified by 'slave';

匯出：
flush tables with read lock; 

mysql> insert into tony(tid,tdept) values (20001,'ty');
ERROR 1223 (HY000): Can't execute the query because you have a conflicting read lock
mysqldump -uroot -p -E -R -A --databases tyms> /mysql/data/tyms_master.sql

slave匯入:
mysql命令列
mysql>source /mysql/data/tyms_master.sql;

--master:
(root@localhost) [(none)]> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000014 |      594 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

---slave:
change master to  master_host='192.168.100.71', master_user='slave', master_password='slave', master_log_file='mysql-bin.000014', master_log_pos=594;
(root@localhost) [(none)]> change master to  master_host='192.168.100.71', master_user='slave', master_password='slave', master_log_file='mysql-bin.000014', master_log_pos=594;
Query OK, 0 rows affected, 2 warnings (0.02 sec)

--master:
unlock tables;

---slave:
mysql> start slave;

[tyms]> show slave status \G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.100.71
                  Master_User: slave
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000014
          Read_Master_Log_Pos: 3051261
               Relay_Log_File: mysql-relay-bin.000002
                Relay_Log_Pos: 3050950
        Relay_Master_Log_File: mysql-bin.000014
             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: 3051261
              Relay_Log_Space: 3051123
              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: 1000
                  Master_UUID: 845f69fa-c558-11e5-9462-000c297b003d
             Master_Info_File: /mysql/data/mysqldata/mydata/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 
     Last_SQL_Error_Timestamp: 
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 
            Executed_Gtid_Set: 
                Auto_Position: 0
1 row in set (0.00 sec)

 [tyms]> show binlog events in '/mysql/data/mysqldata/mydata/mysql-bin.000014' from 3051261;
 
[(none)]> select version();
+------------+
| version()  |
+------------+
| 5.6.28-log |
+------------+
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。可以在主庫裡執行DML或者DDL驗證下。
 


如果同步不成功：
1：停掉從庫
mysql> slave stop
2：主庫上找到日誌和位置
mysql> show master status;
(root@localhost) [(none)]> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000014 |      594 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
3：手動同步
mysql> change master to
> master_host='master_ip',
> master_user='gechong',
> master_password='gechong',
> master_port=3306,
> master_log_file='mysql-bin.000014',
> master_log_pos=594;
1 row in set (0.00 sec)
4：啟動從庫
mysql> slave start;
1 row in set (0.00 sec)

如果有異常需要可執行跳過：
>slave stop;
>SET GLOBAL sql_slave_skip_counter = 1;
>slave start;


Created by Tony.Tang[TangYun]2016.02
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