mysql 主从不同步处理--数据库初始化
问题处理借鉴至网上的内容
又一次做主从，全然同步
在主库新建一张表后。在slave 段发现数据没有同步过去。
mysql version：5.6.10
os ：rhel 5.6
解决过程例如以下：
1.主库进行锁表，防止数据写入
mysql> flush tables with read lock;
解锁命令：
Mysql> unlock tables;
2.进行数据备份 。数据备份到mysql.sql文件
#mysqldump -uroot -pmysql --all-databases > mysql.sql
3.查看master 状态
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position |Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 335 |test | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
4.把mysql备份文件传到从库机器。进行数据恢复
scp or ftp
5.停止从库的状态
mysql> stop slave;
6.从库导入数据备份
mysql> source /lixora/mysql.sql；
7.设置从库同步。注意该处的同步点。就是主库show master status信息里的| File| Position两项
change master to
master_host='10.80.18.241', -----主库IP地址
master_user='root',
master_password='mysql',
master_port=3306,
master_log_file='mysql-bin.000003',
master_log_pos=335;
当中MASTER_HOST是master机的ip，
MASTER_USER和MASTER_PASSWORD是在master上加入的用户，用来复制操作的用户
MASTER_LOG_FILE和MASTER_LOG_POS相应与show master status里的信息
8.又一次开启从同步
mysql> start slave;
9.查看同步状态
mysql> show slave status\G
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
同步測试：
【master】
mysql> use test;
Database changed
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| lixora |
| max |
| test |
+----------------+
3 rows in set (0.00 sec)
mysql> create table lixora_2015_0317 as select * from mysql.user;
Query OK, 5 rows affected (0.68 sec)
Records: 5 Duplicates: 0 Warnings: 0
mysql> show tables;
+------------------+
| Tables_in_test |
+------------------+
| lixora |
| lixora_2015_0317 |
| max |
| test |
+------------------+
4 rows in set (0.00 sec)
mysql> select * from lixora_2015_0317;
。。。
5 rows in set (0.00 sec)
【slave】
mysql> use test
Database changed
mysql> show tables;
+------------------+
| Tables_in_test |
+------------------+
| lixora |
| lixora_2015_0317 |
| max |
| test |
+------------------+
4 rows in set (0.00 sec)
mysql> select count(*) from lixora_2015_0317;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.06 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.80.18.241
Master_User: root
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 1166
Relay_Log_File: oracle11g-dag-relay-bin.000002
Relay_Log_Pos: 1114
Relay_Master_Log_File: mysql-bin.000003
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: 1166
Relay_Log_Space: 1295
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: 888a8d9e-cbb3-11e4-b87e-000c29d57584
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 (0.00 sec)
