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小 发表于 2011-5-20 16:12 只看该作者
mysql的复制
--------一般数据库默认的空用户(匿名),可以对information_schema和test库拥有权限,删
mysql> use mysql
Database changed
mysql> delete from user where user='';
Query OK, 2 rows affected (0.01 sec)
mysql> drop user [url=] ''@'%'[/url] ;
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
--------------------------------------------
mysql的复制,如果在/etc/my.cnf下开启bin-log
log-bin=/usr/local/mysql/log/mysql-bin.log需要指定log目录具有mysql组的读写权限
一般指定log-bin=mysql-bin即可
-----
主服务器服务启动后:
mysql>grant replication slave,replication client on *.* to [url=] 'repl'@'%'[/url] identified by '123';
以下命令同上。
mysql> grant replication slave on *.* to [url=] 'repl'@'192.168.0.38'[/url] identified by '123456';
修改/etc/my.cnf
log-bin=mysql-bin
server-id=1
如果是innodb表,还要开启相关的选项
从服务器上:
修改/etc/my.cnf
log-bin=mysql-bin
server-id=2
master-host = 192.168.0.28
master-user = repl
master-password = 123456
如果从服务器以后也做为主或切换到主服务器,也应该开启 bin-log
主服务器上
从服务器可以看到:
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.28
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000013
Read_Master_Log_Pos: 106
Relay_Log_File: slave38-relay-bin.000009
Relay_Log_Pos: 251
Relay_Master_Log_File: mysql-bin.000013
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: 106
Relay_Log_Space: 553
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:
1 row in set (0.00 sec)
mysql> select master_pos_wait('mysql-bin.000015','1595');
+--------------------------------------------+
| master_pos_wait('mysql-bin.000015','1595') |
+--------------------------------------------+
| 0 |
+--------------------------------------------+
1 row in set (0.00 sec)
--skip-slave-start
如果在从服务器执行
就是说不执行启动从服务器的操作。
mysql> show processlist \G;
*************************** 1. row ***************************
Id: 1
User: root
Host: localhost
db: NULL
Command: Query
Time: 0
State: NULL
Info: show processlist
1 row in set (0.00 sec)
用以下命令即可
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
--read-only选项
mysql> grant all privileges on test1.* to [url=]'z1'@'%'[/url] identified by '1234';
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> select * from db where user='z1' \G;
*************************** 1. row ***************************
Host: %
Db: test1
User: z1
Select_priv: Y
Insert_priv: Y
Update_priv: Y
Delete_priv: Y
Create_priv: Y
Drop_priv: Y
Grant_priv: N
References_priv: Y
Index_priv: Y
Alter_priv: Y
Create_tmp_table_priv: Y
Lock_tables_priv: Y
Create_view_priv: Y
Show_view_priv: Y
Create_routine_priv: Y
Alter_routine_priv: Y
Execute_priv: Y
Event_priv: Y
Trigger_priv: Y
1 row in set (0.00 sec)
[root@slave38 mysql]# mysql -uz1 -p1234
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.1.41-log MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| test1 |
+--------------------+
mysql> select * from t1;
+------+
| id |
+------+
| 1 |
| 2 |
| 3 |
+------+
3 rows in set (0.00 sec)
mysql> insert into t1 values(4),(5);
ERROR 1290 (HY000): The MySQL server is running with the --read-only option so it cannot execute this statement
-------------
选项replicate-do-db,replicate-do-table等,以下以replicate-do-table为例
只更新 test1.t1表
[root@slave38 mysql]# mysqld_safe --replicate-do-table=test1.t1 &
主服务器上
mysql> insert into t1 values(10),(20);
Query OK, 2 rows affected (0.00 sec)
Records: 2 Duplicates: 0 Warnings: 0
mysql> insert into t2 values(1,'xiaofeng'),(2,'azhu');
Query OK, 2 rows affected (0.00 sec)
Records: 2 Duplicates: 0 Warnings: 0
mysql> select * from t2;
+------+----------+
| id | name |
+------+----------+
| 1 | xiaofeng |
| 2 | azhu |
+------+----------+
2 rows in set (0.00 sec)
mysql> select * from t1;
+------+
| id |
+------+
| 1 |
| 2 |
| 3 |
| 10 |
| 20 |
+------+
5 rows in set (0.00 sec)
mysql> select * from t2;
Empty set (0.00 sec)
选项slave-skip-errors
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