标签：mysql-主从配置
主从配置
一、
A主机IP：192.168.1.84
B主机IP：192.168.1.85
1、数据库分配权限给从服
mysql>GRANT REPLICATION SLAVE ON *.* TO ‘backup’@’192.168.1.85‘ IDENTIFIED BY ‘123456’;
赋予从机权限，有多台丛机，就执行多次
2、打开主机A的my.cnf，输入
server-id = 1 #主机标示，整数
log_bin = /var/log/mysql/mysql-bin.log #确保此文件可写 此步骤可以不用
read-only =0 #主机，读写都可以 此步骤可以不用
binlog-do-db =test #需要备份数据，多个写多行
binlog-ignore-db =mysql #不需要备份的数据库，多个写多行 此步骤可以不用
------------------------------------------------------------------或
[mysqld]
port = 3306
socket = /tmp/mysql.sock
basedir = /data/apps/mysql
datadir = /data/mysql/data
pid-file = /data/mysql/data/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 1
log-bin =/data/mysql/data/mysql-bin.log
binlog-do-db =test
binlog-do-db =ping1
binlog-do-db =ping2
log_bin_trust_function_creators=1
数据库备份过从库
mysql> flush tables with read lock;
Query OK, 0 rows affected (0.19 sec)
之后是mysqldump
mysqldump -h127.0.0.1 -p3306 -uroot -p test > /home/chenyz/test.sql
最好在主数据库备份完毕，恢复写操作
mysql> unlock tables;
3、打开从机B的my.cnf，输入
server-id = 2
进入mysql
Stop Slave;
Change master to
master_host =’192.168.110.84’,
master_user =’backup’,
master_password =’123456’,
master_port =3306,
Master_log_file =’fileid’,
Master_log_pos=pos;
binlog-do-db =test
binlog-ignore-db =test 忽略某个库的操作写进二进制日志中。
---------------------------------------------------------------------或
change master to master_host =‘192.168.1.84‘;
change master to master_user =‘backup‘;
change master to master_password=‘123456‘;
change master to master_port =3306;
change master to master_log_file=‘mysql-bin.000006‘;
change master to master_log_pos=214;
Start Slave;
从服my.conf配置文件：
master-connect-retry=60 #如果从服务器发现主服务器断掉，重新连接的时间差(秒)
replicate-do-db =test #只复制某个库
replicate-ignore-db=mysql #不复制某个库
---------------------------------------------------------------------或
[mysqld]
port = 3306
socket = /tmp/mysql.sock
basedir = /data/apps/mysql #数据库安装目录
datadir = /data/mysql/data #数据库data目录
pid-file = /data/mysql/data/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 2
log-bin =/data/mysql/data/mysql-bin.log
replicate-do-db =test
replicate-do-db =ping1
replicate-do-db =ping2
replicate-do-db =dbadsys
log_bin_trust_function_creators=1
4、同步数据库
主从库都启动即可自动同步，如果不嫌麻烦的话可以把主库的内容导出成SQL，然后在从库中运行一遍
5、先重启主机A的mysql，再重启从机B的mysql
6、验证
在主机A中，mysql>show master status\G;
File: mysql-bin.000007
Position: 130702
Binlog_Do_DB: test,ping1,ping2
Binlog_Ignore_DB:
Executed_Gtid_Set:
在从机B中，mysql>show slave status\G;
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.84
Master_User: backup
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000007
Read_Master_Log_Pos: 130702
Relay_Log_File: mysql-relay-bin.000005
Relay_Log_Pos: 130865
Relay_Master_Log_File: mysql-bin.000007
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test,ping1,ping2
在打印出来的状态下，查看以下两个参数的值：
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
到此你已经可以使用了！
本文出自 “SQL” 博客，请务必保留此出处http://7476463.blog.51cto.com/7466463/1685870
标签：mysql-主从配置
原文地址：http://7476463.blog.51cto.com/7466463/1685870
