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MySQL复制应用中继日志解析

时间:2021-07-01 10:21:17 帮助过:4人阅读

> select * from table_pk; +-----+-----------+-----+-----+ | id | name | age | sex | +-----+-----------+-----+-----+ | 111 | zhangsan | 20 | 0 | | 222 | lisi | 22 | 1 | | 333 | wangwu | 22 | 1 | | 444 | lilei | 32 | 0 | | 555 | hanmeimei | 30 | 1 | +-----+-----------+-----+-----+ 5 rows in set (0.00 sec) (dg6)root@localhost [mytest]> show global variables like %binlog_format%; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | binlog_format | ROW | +---------------+-------+ 1 row in set (0.00 sec)


那么我们去从库看看

(dg7)root@localhost [mytest]> select * from table_pk;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsan  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
+-----+-----------+-----+-----+
5 rows in set (0.00 sec)

(dg7)root@localhost [mytest]> show global variables like %binlog_format%;
+--------------------------+-------------------+
| Variable_name            | Value             |
+--------------------------+-------------------+
| binlog_format            | ROW               |
+--------------------------+-------------------+
8 rows in set (0.00 sec)

(dg7)root@localhost [mytest]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.80.106
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: dg6-logbin.000001
          Read_Master_Log_Pos: 4469
               Relay_Log_File: dg7-relay-bin.000002
                Relay_Log_Pos: 4681
        Relay_Master_Log_File: dg6-logbin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: mysql
           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: 4469
              Relay_Log_Space: 4883
              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
                  Master_UUID: b888e1ea-9739-11e4-a24e-000c29b24887
             Master_Info_File: /data/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: b888e1ea-9739-11e4-a24e-000c29b24887:1-17
            Executed_Gtid_Set: a9926b45-975d-11e4-a339-000c29b24888:1-9,
b888e1ea-9739-11e4-a24e-000c29b24887:1-17
                Auto_Position: 1
1 row in set (0.00 sec)

数据是复制过来的,MySQL主从复制是正常的,那么我们为了验证MySQL复制SQL线程是居于刚才那张图的流程,有主键,就按主键更新匹配更新记录。

那么我们在从库修改一行数据,故意制造不一致。
  

(dg7)root@localhost [mytest]> UPDATE `table_pk` SET `name`=laowang WHERE `id`=333;
Query OK, 0 rows affected (0.00 sec)
Rows matched: 1  Changed: 0  Warnings: 0

(dg7)root@localhost [mytest]> select * from table_pk;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsan  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | laowang   |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
+-----+-----------+-----+-----+
5 rows in set (0.00 sec)


这时候主从数据不一致了

主库
(dg6)root@localhost [mytest]> select * from table_pk where id=333;
+-----+--------+-----+-----+
| id  | name   | age | sex |
+-----+--------+-----+-----+
| 333 | wangwu |  22 |   1 |
+-----+--------+-----+-----+
1 row in set (0.00 sec)

从库

(dg7)root@localhost [mytest]> select * from table_pk where id=333;
+-----+---------+-----+-----+
| id  | name    | age | sex |
+-----+---------+-----+-----+
| 333 | laowang |  22 |   1 |
+-----+---------+-----+-----+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> 


那么,我们在主库更新一行数据。

(dg6)root@localhost [mytest]> UPDATE `table_pk` SET `name`=wangzi WHERE `id`=333;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg6)root@localhost [mytest]> select * from table_pk where id=333;
+-----+--------+-----+-----+
| id  | name   | age | sex |
+-----+--------+-----+-----+
| 333 | wangzi |  22 |   1 |
+-----+--------+-----+-----+
1 row in set (0.00 sec)


我们来看一下从库状态,是不是主库的更新给复制过来了,见证奇迹的时候到了

###############################################
(dg7)root@localhost [mytest]> select * from table_pk where id=333; +-----+---------+-----+-----+ | id | name | age | sex | +-----+---------+-----+-----+ | 333 | laowang | 22 | 1 | +-----+---------+-----+-----+ 1 row in set (0.00 sec)
######################### 神奇的是主库的更新过来了############################################# (dg7)root@localhost [mytest]
> select * from table_pk where id=333; +-----+--------+-----+-----+ | id | name | age | sex | +-----+--------+-----+-----+ | 333 | wangzi | 22 | 1 | +-----+--------+-----+-----+ 1 row in set (0.00 sec)
#########################那么看一下MySQL主从复制状态看看,也是正常的###################### (dg7)root@localhost [mytest]
> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.80.106 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: dg6-logbin.000001 Read_Master_Log_Pos: 5249 Relay_Log_File: dg7-relay-bin.000002 Relay_Log_Pos: 5461 Relay_Master_Log_File: dg6-logbin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: mysql 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: 5249 Relay_Log_Space: 5663 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 Master_UUID: b888e1ea-9739-11e4-a24e-000c29b24887 Master_Info_File: /data/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: b888e1ea-9739-11e4-a24e-000c29b24887:1-20 Executed_Gtid_Set: a9926b45-975d-11e4-a339-000c29b24888:1-11, b888e1ea-9739-11e4-a24e-000c29b24887:1-20 Auto_Position: 1 1 row in set (0.00 sec) (dg7)root@localhost [mytest]>


3.验证没有索引的情况

 主库创建表和插入记录

 CREATE TABLE `table_index` (
  `id` int(11) NOT NULL,
  `name` varchar(20) NOT NULL,
  `age` tinyint(4) NOT NULL,
  `sex` tinyint(4) NOT NULL COMMENT 0,man,1,woman,
  ) ENGINE=InnoDB 

(dg6)root@localhost [mytest]> select * from table_index;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsan  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
+-----+-----------+-----+-----+
5 rows in set (0.00 sec)

(dg6)root@localhost [mytest]> 


从库看看

(dg7)root@localhost [mytest]> select * from table_index;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsan  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
+-----+-----------+-----+-----+
5 rows in set (0.00 sec)

我们在从库继续搞破坏,把age为22的记录修改为laowang,这时候主从已经不一致了。

(dg7)root@localhost [mytest]> select * from table_index where age=22;
+-----+--------+-----+-----+
| id  | name   | age | sex |
+-----+--------+-----+-----+
| 333 | wangwu |  22 |   1 |
+-----+--------+-----+-----+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> update table_index set name=laowang where age=22;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg7)root@localhost [mytest]> select * from table_index where age=22;
+-----+---------+-----+-----+
| id  | name    | age | sex |
+-----+---------+-----+-----+
| 333 | laowang |  22 |   1 |
+-----+---------+-----+-----+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> 

 

那么我们还是在主库更新一下记录。

(dg6)root@localhost [mytest]> select * from table_index where name=lisi;
+-----+------+-----+-----+
| id  | name | age | sex |
+-----+------+-----+-----+
| 222 | lisi |  22 |   1 |
+-----+------+-----+-----+
1 row in set (0.00 sec)

(dg6)root@localhost [mytest]>  update table_index set age=30 where name=lisi;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg6)root@localhost [mytest]> select * from table_index where name=lisi;
+-----+------+-----+-----+
| id  | name | age | sex |
+-----+------+-----+-----+
| 222 | lisi |  30 |   1 |
+-----+------+-----+-----+
1 row in set (0.00 sec)

(dg6)root@localhost [mytest]> 

 

回到从库看看,数据没有更新过来,主从复制也是异常的

(dg7)root@localhost [mytest]> select * from table_index where name=lisi;
+-----+------+-----+-----+
| id  | name | age | sex |
+-----+------+-----+-----+
| 222 | lisi |  33 |   1 |
+-----+------+-----+-----+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.80.106
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: dg6-logbin.000001
          Read_Master_Log_Pos: 7376
               Relay_Log_File: dg7-relay-bin.000003
                Relay_Log_Pos: 724
        Relay_Master_Log_File: dg6-logbin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: No
              Replicate_Do_DB: 
          Replicate_Ignore_DB: mysql
           Replicate_Do_Table: 
       Replicate_Ignore_Table: 
      Replicate_Wild_Do_Table: 
  Replicate_Wild_Ignore_Table: 
                   Last_Errno: 1032
                   Last_Error: Could not execute Update_rows event on table mytest.table_index; Cant find record in table_index, Error_code: 1032; Corrupted replication event was detected, Error_code: 1610; handler error HA_ERR_END_OF_FILE; the events master log dg6-logbin.000001, end_log_pos 7345
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 7112
              Relay_Log_Space: 8090
              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: NULL
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 1032
               Last_SQL_Error: Could not execute Update_rows event on table mytest.table_index; Cant find record in table_index, Error_code: 1032; Corrupted replication event was detected, Error_code: 1610; handler error HA_ERR_END_OF_FILE; the events master log dg6-logbin.000001, end_log_pos 7345
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 1
                  Master_UUID: b888e1ea-9739-11e4-a24e-000c29b24887
             Master_Info_File: /data/mydata/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: 
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 
     Last_SQL_Error_Timestamp: 150425 08:30:49
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: b888e1ea-9739-11e4-a24e-000c29b24887:1-28
            Executed_Gtid_Set: a9926b45-975d-11e4-a339-000c29b24888:1-14,
b888e1ea-9739-11e4-a24e-000c29b24887:1-27
                Auto_Position: 1
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> 

 

4.验证有唯一索引情况

 

测试方法都一样,下面步骤我都就贴结果了。

(dg6)root@localhost [mytest]> select * from table_index;
+-----+-----+-----------+-----+-----+
| id  | sid | name      | age | sex |
+-----+-----+-----------+-----+-----+
| 111 |   1 | zhangsan  |  20 |   0 |
| 222 |   2 | lisi      |  30 |   1 |
| 333 |   3 | wangzi    |  22 |   1 |
| 444 |   4 | lilei     |  32 |   0 |
| 555 |   5 | hanmeimei |  30 |   1 |
+-----+-----+-----------+-----+-----+
5 rows in set (0.00 sec)

(dg6)root@localhost [mytest]> select * from table_index where sid=3;
+-----+-----+--------+-----+-----+
| id  | sid | name   | age | sex |
+-----+-----+--------+-----+-----+
| 333 |   3 | wangzi |  22 |   1 |
+-----+-----+--------+-----+-----+
1 row in set (0.00 sec)

(dg6)root@localhost [mytest]> update table_index set name=wangwu where sid=3;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg6)root@localhost [mytest]> select * from table_index where sid=3;
+-----+-----+--------+-----+-----+
| id  | sid | name   | age | sex |
+-----+-----+--------+-----+-----+
| 333 |   3 | wangwu |  22 |   1 |
+-----+-----+--------+-----+-----+
1 row in set (0.00 sec)

(dg6)root@localhost [mytest]> 

从库看看,能更新过来,而且主从复制状态是正常的

(dg7)root@localhost [mytest]> select * from table_index;
+-----+-----+-----------+-----+-----+
| id  | sid | name      | age | sex |
+-----+-----+-----------+-----+-----+
| 111 |   1 | zhangsan  |  20 |   0 |
| 222 |   2 | lisi      |  30 |   1 |
| 333 |   3 | wangzi    |  22 |   1 |
| 444 |   4 | lilei     |  32 |   0 |
| 555 |   5 | hanmeimei |  30 |   1 |
+-----+-----+-----------+-----+-----+
5 rows in set (0.00 sec)

(dg7)root@localhost [mytest]> update table_index set name=laowang where sid=3;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg7)root@localhost [mytest]> select * from table_index where sid=3;
+-----+-----+---------+-----+-----+
| id  | sid | name    | age | sex |
+-----+-----+---------+-----+-----+
| 333 |   3 | laowang |  22 |   1 |
+-----+-----+---------+-----+-----+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.80.106
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: dg6-logbin.000001
          Read_Master_Log_Pos: 13038
               Relay_Log_File: dg7-relay-bin.000005
                Relay_Log_Pos: 5841
        Relay_Master_Log_File: dg6-logbin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: mysql
           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: 13038
              Relay_Log_Space: 6615
              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
                  Master_UUID: b888e1ea-9739-11e4-a24e-000c29b24887
             Master_Info_File: /data/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: b888e1ea-9739-11e4-a24e-000c29b24887:1-52
            Executed_Gtid_Set: a9926b45-975d-11e4-a339-000c29b24888:1-26,
b888e1ea-9739-11e4-a24e-000c29b24887:1-52
                Auto_Position: 1
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> select * from table_index where sid=3;
+-----+-----+--------+-----+-----+
| id  | sid | name   | age | sex |
+-----+-----+--------+-----+-----+
| 333 |   3 | wangwu |  22 |   1 |
+-----+-----+--------+-----+-----+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.80.106
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: dg6-logbin.000001
          Read_Master_Log_Pos: 13302
               Relay_Log_File: dg7-relay-bin.000005
                Relay_Log_Pos: 6105
        Relay_Master_Log_File: dg6-logbin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: mysql
           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: 13302
              Relay_Log_Space: 6879
              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
                  Master_UUID: b888e1ea-9739-11e4-a24e-000c29b24887
             Master_Info_File: /data/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: b888e1ea-9739-11e4-a24e-000c29b24887:1-53
            Executed_Gtid_Set: a9926b45-975d-11e4-a339-000c29b24888:1-26,
b888e1ea-9739-11e4-a24e-000c29b24887:1-53
                Auto_Position: 1
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> 

5.验证有主键和有普通索引情况

(dg6)root@localhost [mytest]> select * from table_key;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsan  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
| 666 | lucy      |  30 |   1 |
| 777 | lili      |  30 |   1 |
| 888 | lintao    |  32 |   0 |
+-----+-----------+-----+-----+
8 rows in set (0.00 sec)

(dg6)root@localhost [mytest]> update table_key set name=zhangsir where age=20;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg6)root@localhost [mytest]> select * from table_key;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsir  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
| 666 | lucy      |  30 |   1 |
| 777 | lili      |  30 |   1 |
| 888 | lintao    |  32 |   0 |
+-----+-----------+-----+-----+
8 rows in set (0.00 sec)

(dg6)root@localhost [mytest]> 

从库看看

(dg7)root@localhost [mytest]> select * from table_key;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsan  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
| 666 | lucy      |  30 |   1 |
| 777 | lili      |  30 |   1 |
| 888 | lintao    |  32 |   0 |
+-----+-----------+-----+-----+
8 rows in set (0.00 sec)

(dg7)root@localhost [mytest]> desc update table_key set name=xiaozhang where age=20;
+----+-------------+-----------+-------+---------------+-----------+---------+-------+------+-------------+
| id | select_type | table     | type  | possible_keys | key       | key_len | ref   | rows | Extra       |
+----+-------------+-----------+-------+---------------+-----------+---------+-------+------+-------------+
|  1 | SIMPLE      | table_key | range | age_index     | age_index | 1       | const |    1 | Using where |
+----+-------------+-----------+-------+---------------+-----------+---------+-------+------+-------------+
1 row in set (0.00 sec)

(dg7)root@localhost [mytest]> update table_key set name=xiaozhang where age=20;
Query OK, 1 row affected (0.03 sec)
Rows matched: 1  Changed: 1  Warnings: 0

(dg7)root@localhost [mytest]> select * from table_key;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | xiaozhang |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
| 666 | lucy      |  30 |   1 |
| 777 | lili      |  30 |   1 |
| 888 | lintao    |  32 |   0 |
+-----+-----------+-----+-----+
8 rows in set (0.00 sec)

(dg7)root@localhost [mytest]> select * from table_key;
+-----+-----------+-----+-----+
| id  | name      | age | sex |
+-----+-----------+-----+-----+
| 111 | zhangsir  |  20 |   0 |
| 222 | lisi      |  22 |   1 |
| 333 | wangwu    |  22 |   1 |
| 444 | lilei     |  32 |   0 |
| 555 | hanmeimei |  30 |   1 |
| 666 | lucy      |  30 |   1 |
| 777 | lili      |  30 |   1 |
| 888 | lintao    |  32 |   0 |
+-----+-----------+-----+-----+
8 rows in set (0.00 sec)

(dg7)root@localhost [mytest]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.80.106
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: dg6-logbin.000001
          Read_Master_Log_Pos: 16026
               Relay_Log_File: dg7-relay-bin.000005
                Relay_Log_Pos: 8829
        Relay_Master_Log_File: dg6-logbin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: mysql
           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: 16026
              Relay_Log_Space: 9603
              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
                  Master_UUID: b888e1ea-9739-11e4-a24e-000c29b24887
             Master_Info_File: /data/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: b888e1ea-9739-11e4-a24e-000c29b24887:

                  

	 	
                    
                    
                    
                    
                    
                

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