mysql主從同步錯誤解決和Slave_IO_Running: NO
轉載：http://hzcsky.blog.51cto.com/1560073/479476
1、出現錯誤提示、
Slave I/O: error connecting to master '[email protected]:3306' - retry-time: 60 retries: 86400, Error_code: 1045
解決方法
從服務器上刪除掉所有的二進制日誌文件，包括一個數據目錄下的master.info文件和hostname-relay-bin開頭的文件。
master.info:：記錄了Mysql主服務器上的日誌文件和記錄位置、連接的密碼。
2、出現錯誤提示
Error reading packet from server: File '/home/mysql/mysqlLog/log.000001' not found (Errcode: 2) ( server_errno=29)
解決方案：
由於主服務器運行了一段時間，產生了二進制文件，而slave是從log.000001開始讀取的，刪除主機二進制文件，包括log.index文件。
3、錯誤提示如下
Slave SQL: Error 'Table 'xxxx' doesn't exist' on query. Default database: 't591'. Query: 'INSERT INTO `xxxx`(type,post_id,browsenum) SELECT type,post_id,browsenum FROM xxxx WHERE hitdate='20090209'', Error_code: 1146
解決方法
由於slave沒有此table表，添加這個表，使用slave start 就可以繼續同步。
4、錯誤提示如下
Error 'Duplicate entry '1' for key 1' on query. Default database: 'movivi1'. Query: 'INSERT INTO `v1vid0_user_samename` VALUES(null,1,'123','11','4545','123')' Error 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1' on query. Default database: 'club'. Query: 'INSERT INTO club.point_process ( GIVEID, GETID, POINT, CREATETIME, DEMO ) VALUES ( 0, 4971112, 5, '2010-12-19 16:29:28',' 1 row in set (0.00 sec)
Mysql > Slave status\G;
顯示：Slave_SQL_Running 爲 NO
解決方法：
Mysql > stop slave;
Mysql > set global sql_slave_skip_counter =1 ;
Mysql > start slave;
5、錯誤提示如下
# show slave status\G;
Master_Log_File: mysql-bin.000029 Read_Master_Log_Pos: 3154083 Relay_Log_File: c7-relay-bin.000178 Relay_Log_Pos: 633 Relay_Master_Log_File: mysql-bin.000025 Slave_IO_Running: Yes Slave_SQL_Running: No Replicate_Do_DB: club Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 1594 Last_Error: Relay log read failure: Could not parse relay log event entry. The possible reasons are: the master's binary log is corrupted (you can check this by running 'mysqlbinlog' on the binary log), the slave's relay log is corrupted (you can check this by running 'mysqlbinlog' on the relay log), a network problem, or a bug in the master's or slave's MySQL code. If you want to check the master's binary log or slave's relay log, you will be able to know their names by issuing 'SHOW SLAVE STATUS' on this slave. Skip_Counter: 0 Exec_Master_Log_Pos: 1010663436
這個問題原因是，主數據庫突然停止或問題終止，更改了mysql-bin.xxx日誌，slave服務器找不到這個文件，需要找到同步的點和日誌文件，然後chage master即可。
解決方法：
change master to master_host='211.103.156.198', master_user='同步帳號', master_password='同步密碼', master_port=3306, master_log_file='mysql-bin.000025', master_log_pos=1010663436;
6、錯誤提示如下
Error 'Unknown column 'qdir' in 'field list'' on query. Default database: 'club'. Query: 'insert into club.question_del (id, pid, ques_name, givepoint, title, subject, subject_pid, createtime, approve, did, status, intime, order_d, endtime,banzhu_uid,banzhu_uname,del_cause,qdir) select id, pid, ques_name, givepoint, title, subject, subject_pid, createtime, approve, did, status, intime, order_d, endtime,'1521859','admin0523','無意義回覆',qdir from club.question where id=7330212' 1 row in set (0.00 sec)
這個錯誤就說club.question_del 表裏面沒有qdir這個字段 造成的加上就可以了~！
在主的mysql ： 裏面查詢 Desc club.question_del；
在 錯誤的從服務器上執行 ： alter table question_del add qdir varchar(30) not null;
7、錯誤提示如下
| Slave_IO_Running: NO |
這個錯誤就是IO 進程沒連接上 ，想辦法連接上把 把與主的POS 號和文件一定要對，然後重新加載下數據。具體步驟：
slave stop;
change master to master_host='IP地址',master_user='club',master_password='mima ',master_log_file='mysqld-bin.000048',MASTER_LOG_POS=396549485;
注：master_log_file='mysqld-bin.000048',MASTER_LOG_POS=396549485;是從主的上面查出 來的 ：show master status\G;
LOAD DATA FROM MASTER;
load data from master；
slave start;
問題解決！