mysql主從復制跳過錯誤項
阿新 • • 發佈：2018-10-26
host count mes use 中斷 兩種 ssl p s pda mysql主從復制，經常會遇到錯誤而導致slave端復制中斷，這個時候一般就需要人工幹預，跳過錯誤才能繼續
1 跳過錯誤有兩種方式：
1.1 跳過指定數量的事務：
mysql>stop slave;
mysql>SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 1; #跳過一個事務
mysql>start slave;1.2 修改mysql的配置文件，通過slave_skip_errors參數來跳所有錯誤或指定類型的錯誤
vi /etc/my.cnf [mysqld] #slave-skip-errors=1062,1053,1146 #跳過指定error no類型的錯誤 #slave-skip-errors=all #跳過所有錯誤
2 例
下面模擬一個錯誤場景
環境（一個已經配置好的主從復制環境）
master數據庫IP：192.168.247.128
slave數據庫IP：192.168.247.130
mysql版本：5.6.14
binlog-do-db = mydb
在master上執行以下語句：
mysql>use mysql;
mysql>create table t1 (id int);
mysql>use mydb;
mysql>insert into mysql.t1 select 1;在slave上查看復制狀態
mysql> show slave status \G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.247.128 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000017 Read_Master_Log_Pos: 2341 Relay_Log_File: DBtest1-relay-bin.000011 Relay_Log_Pos: 494 Relay_Master_Log_File: mysql-bin.000017 Slave_IO_Running: Yes Slave_SQL_Running: No Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 1146 Last_Error: Error ‘Table ‘mysql.t1‘ doesn‘t exist‘ on query. Default database: ‘mydb‘. Query: ‘insert into mysql.t1 select 1‘ Skip_Counter: 0 Exec_Master_Log_Pos: 1919 Relay_Log_Space: 1254 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: 1146 Last_SQL_Error: Error ‘Table ‘mysql.t1‘ doesn‘t exist‘ on query. Default database: ‘mydb‘. Query: ‘insert into mysql.t1 select 1‘ Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: f0f7faf6-51a8-11e3-9759-000c29eed3ea Master_Info_File: /var/lib/mysql/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: 131210 21:37:19 Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 1 row in set (0.00 sec)
由結果可以看到，Read_Master_Log_Pos: 2341，Exec_Master_Log_Pos: 1919 時出錯了Last_SQL_Error: Error ‘Table ‘mysql.t1‘ doesn‘t exist‘ on query.
因為只對mydb記錄了binlog,當在mydb庫操作其它數據庫的表，但該表在slave上又不存在時就出錯了。
我們可在看看binlog裏的事務內容，這裏一行代表一個事務
mysql> SHOW BINLOG EVENTS in ‘mysql-bin.000017‘ from 1919\G *************************** 1. row *************************** Log_name: mysql-bin.000017 Pos: 1919 Event_type: Query Server_id: 1 End_log_pos: 1999 Info: BEGIN *************************** 2. row *************************** Log_name: mysql-bin.000017 Pos: 1999 Event_type: Query Server_id: 1 End_log_pos: 2103 Info: use `mydb`; insert into mysql.t1 select 1 *************************** 3. row *************************** Log_name: mysql-bin.000017 Pos: 2103 Event_type: Xid Server_id: 1 End_log_pos: 2134 Info: COMMIT /* xid=106 */ *************************** 4. row *************************** Log_name: mysql-bin.000017 Pos: 2134 Event_type: Query Server_id: 1 End_log_pos: 2213 Info: BEGIN *************************** 5. row *************************** Log_name: mysql-bin.000017 Pos: 2213 Event_type: Query Server_id: 1 End_log_pos: 2310 Info: use `mydb`; insert into t1 select 9 *************************** 6. row *************************** Log_name: mysql-bin.000017 Pos: 2310 Event_type: Xid Server_id: 1 End_log_pos: 2341 Info: COMMIT /* xid=107 */ 6 rows in set (0.00 sec)
由上面的結果可知，我們需要跳過兩個事務（Pos: 1999 insert,Pos: 2103 commit)
跳過操作：
mysql>stop slave;
mysql>SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 2; 跳過一個事務
mysql>start slave;
mysql> show slave status\G
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 3
Current database: mydb
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.247.128
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000017
Read_Master_Log_Pos: 3613
Relay_Log_File: DBtest1-relay-bin.000018
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000017
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: 3613
Relay_Log_Space: 458
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: f0f7faf6-51a8-11e3-9759-000c29eed3ea
Master_Info_File: /var/lib/mysql/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 (0.01 sec)復制狀態正常。
mysql主從復制跳過錯誤項