今天在測試MYSQL主從的過程當中,從 Master 的 phpMyAdmin 中刪除了幾條數據,而後再運行的時候,發現 Slave 不能同步
php
故障現象:mysql
進入slave服務器,運行:
mysql> show slave status\G
.......
Relay_Log_File: localhost-relay-bin.000535
Relay_Log_Pos: 21795072
Relay_Master_Log_File: localhost-bin.000094
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
......sql
解決辦法1、
Slave_SQL_Running: No
1.程序可能在slave上進行了寫操做
2.也多是slave機器重起後,事務回滾形成的.
通常是事務回滾形成的:
解決辦法:
mysql> slave stop;
mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
mysql> slave start;服務器
解決辦法2、
首先停掉Slave服務:slave stop
到主服務器上查看主機狀態:
記錄File和Position對應的值測試
進入Master
mysql> show master status;spa
+----------------------+----------+--------------+------------------+事務
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |ip
+----------------------+----------+--------------+------------------+同步
| localhost-bin.000094 | 33622483 | | | it
+----------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
而後到slave服務器上執行手動同步:
mysql> change master to
> master_host='master_ip',
> master_user='user',
> master_password='pwd',
> master_port=3306,
> master_log_file=localhost-bin.000094',
> master_log_pos=33622483 ;
1 row in set (0.00 sec)
mysql> slave start;
1 row in set (0.00 sec)
mysql> show slave status\G
*************************** 1. row ***************************
........
Master_Log_File: localhost-bin.000094
Read_Master_Log_Pos: 33768775
Relay_Log_File: localhost-relay-bin.000537
Relay_Log_Pos: 1094034
Relay_Master_Log_File: localhost-bin.000094
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
手動同步須要中止master的寫操做!