mysql主从同步_MySQL

[root@localhost ~]# mysql -uroot -pwsyht123 -e "show variables like ‘log_bin’;" #查看有没有开启log-bin
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin | ON |
+---------------+-------+
[root@master ~]# service mysqld restart

[root@master ~]# mysql -uroot -pwsyht123
mysql> grant replication slave on *.* to 'wsyht'@'192.168.2.%' identified by '123456';
mysql> flush privileges; #刷新权限
mysql> flush table with read lock; #读锁，不让别的用户往里写，当前窗口还不能断
mysql> show master status; #查看master状态
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000028 | 107 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
mysql> show databases; #查看Master当前数据库有什么库
+--------------------+
| Database |
+--------------------+
| information_schema |
| d1 |
| mysql |
| performance_schema |
+--------------------+
5 rows in set (0.00 sec)

[root@slave ~]# mysql -uroot -pwsyht123 -e "show databases;" #查看当前slave有什么库
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)
[root@slave ~]# mysql -uroot -pwsyht123 < /opt/all.$(date +%F).sql #将主库的备份数据导进从库
[root@slave ~]# mysql -uroot -pwsyht123 -e "show databases;" #导进库后再次查看
+--------------------+
| Database |
+--------------------+
| information_schema |
| d1 |
| mysql |
| performance_schema |
+--------------------+

[root@slave ~]# mysql -uroot -pwsyht123
mysql> change master to
master_host='192.168.2.1', #连接的主机
master_user='wsyht', #连接同步Master的账户
master_password='123456', #连接同步Master的密码
master_log_file='mysql-bin.000028', #Master的现记录的日志文件
master_log_pos=107; #Master记录的日志点
mysql> start slave;
mysql> show slave status\G;
*************************** 1. row ***************************
 Slave_IO_State: Waiting for master to send event
 Master_Host: 192.168.2.1
 Master_User: wsyht
 Master_Port: 3306
 Connect_Retry: 60
 Master_Log_File: mysql-bin.000028 #Master正在使用的日志文件
 Read_Master_Log_Pos: 107 #Master正中使用的日志点
 Relay_Log_File: mysql-relay-bin.000002 #Slave正使用的中继日志文件
 Relay_Log_Pos: 253 #Slave中继日志文件的日志点
 Relay_Master_Log_File: mysql-bin.000028
 Slave_IO_Running: Yes #IO线程呈YES为正常
 Slave_SQL_Running: Yes #SQL线程呈YES为正
 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: 107
 Relay_Log_Space: 409
 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
1 row in set (0.00 sec)

No query specified
mysql> show databases; #查看Slave当前数据库有什么库
+--------------------+
| Database |
+--------------------+
| information_schema |
| d1 |
| mysql |
| performance_schema |
+--------------------+
5 rows in set (0.00 sec)

mysql> create database test; #创建test数据库测试同上海
Query OK, 1 row affected (0.00 sec)

mysql> show databases; #查看Master当前数据库有什么库
+--------------------+
| Database |
+--------------------+
| information_schema |
| d1 |
| mysql |
| performance_schema |
| test |
+--------------------+
6 rows in set (0.00 sec)

mysql> show databases; #查看Slave当前数据库有什么库
+--------------------+
| Database |
+--------------------+
| information_schema |
| d1 |
| mysql |
| performance_schema |
| test |
+--------------------+
6 rows in set (0.00 sec)