配置Mysql数据库的主从同步方法
发布时间：2022-06-11 15:49:31 所属栏目：MySql教程 来源：互联网
导读：主从同步是实现网站分布式数据处理一个非常常用的方案了,今天我来为各位介绍配置Mysql数据库的主从同步(双主)教程,希望下文能帮助到各位哦. 配置Mysql数据库的主从同步(一主一从). 一、主库开启BINLOG、server-id [root@Master-Mysql ~]# grep -E server-id|
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主从同步是实现网站分布式数据处理一个非常常用的方案了,今天我来为各位介绍配置Mysql数据库的主从同步(双主)教程,希望下文能帮助到各位哦. 配置Mysql数据库的主从同步(一主一从). 一、主库开启BINLOG、server-id [root@Master-Mysql ~]# grep -E "server-id|log-bin" /etc/my.cnf log-bin = /usr/local/mysql/data/mysql-bin server-id = 1 mysql> show variables like '%log_bin%'; +---------------------------------+---------------------------------------+ | Variable_name | Value | | server_id_bits | 32 | +----------------+-------+ 2 rows in set (0.00 sec) 备注:以上两个信息必须在[mysqld]模块下！！！ 二、给从库授权 mysql> grant replication slave on *.* to byrd@'192.168.199.%' identified by 'admin'; mysql> flush privileges; mysql> select user,host from mysql.user; +------+---------------+ | user | host | +------+---------------+ | root | 127.0.0.1 | | byrd | 192.168.199.% | | root | ::1 | | root | lamp | | root | localhost | +------+---------------+ 5 rows in set (0.00 sec) 锁表前建立点数据: mysql> create database hitest; mysql> show databases; +--------------------+ | Database | +--------------------+ | hitest | +--------------------+ 6 rows in set (0.00 sec) mysql> use hitest; mysql> create table test( -> id int(4) not null primary key auto_increment, -> name char(20) not null -> ); Query OK, 0 rows affected (1.80 sec) mysql> show tables ; +------------------+ | Tables_in_hitest | +------------------+ | test | +------------------+ mysql> insert into test(id,name) values(1,'zy'); mysql> select * from test; +----+------+ | id | name | +----+------+ | 1 | zy | +----+------+ 三、锁表、备份、解锁 mysql> flush table with read lock; #锁表 mysql> show variables like '%timeout%'; #锁表时间 +-----------------------------+----------+ | Variable_name | Value | +-----------------------------+----------+ | interactive_timeout | 28800 | | wait_timeout | 28800 | +-----------------------------+----------+ 12 rows in set (0.06 sec) mysql> show master status; #binlog日志位置 +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000004 | 1305 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.03 sec) [root@Master-Mysql ~]# /usr/local/mysql/bin/mysqldump -uroot -p'' -B -A |gzip >/tmp/all.sql.gz #新窗口备份 Enter password: mysql> unlock table; #解锁 ###############解锁后主库操作如下：############### mysql> use hitest mysql> insert into test(id,name) values(2,'binghe'); mysql> select * from test; +----+--------+ | id | name | +----+--------+ | 1 | zy | | 2 | binghe | +----+--------+ mysql> create database hxy; ###############解锁后主库操作完成~############### 备注:备份数据需要重新打开新窗口,不然锁表就自动失效. 四、主库导入到从库 ################主库操作################ [root@Master-Mysql tmp]# ll -rw-r--r--. 1 root root 162236 Jul 8 21:30 all.sql.gz [root@Master-Mysql tmp]# gzip -d all.sql.gz [root@Slave-Mysql ~]# grep server-id /etc/my.cnf server-id = 2 [root@Slave-Mysql ~]# /etc/init.d/mysqld restart [root@Slave-Mysql tmp]# /usr/local/mysql/bin/mysql -uroot -p'admin' </tmp/all.sql Warning: Using a password on the command line interface can be insecure. [root@Slave-Mysql tmp]# /usr/local/mysql/bin/mysql -uroot -p'admin' mysql> use hitest; mysql> select * from test; +----+------+ | id | name | +----+------+ | 1 | zy | +----+------+ 1 row in set (0.00 sec) 六、从库配置信息 mysql> CHANGE MASTER TO -> MASTER_HOST='192.168.199.177', -> MASTER_PORT=3306, -> MASTER_USER='byrd', -> MASTER_PASSWORD='admin', -> MASTER_LOG_FILE='mysql-bin.000004', -> MASTER_LOG_POS=1305; Query OK, 0 rows affected, 2 warnings (1.96 sec) [root@Slave-Mysql ~]# ll /usr/local/mysql/data/master.info ##备注：master.info记录MASTER的相关信息！ 七、启动从库同步 mysql> start slave; mysql> show slave status＼G Slave_IO_Running: Yes Slave_SQL_Running: Yes Seconds_Behind_Master: 0 八、结果测试 mysql> use hitest; mysql> select * from test; +----+--------+ #主库建立了一个zhihu的数据库 Enter password: [root@Slave-Mysql ~]# /usr/local/mysql/bin/mysql -uroot -p'' -e "show databases like 'zhihu'"; Enter password: +------------------+ | Database (zhihu) | +------------------+ | zhihu | +------------------+ 配置Mysql数据库的主从同步(双主) 已经配置好的: 主库:192.168.199.177 从库:192.168.199.178 [root@Master-Mysql ~]# egrep "server-id|log-slave|log-bin|auto_increment|slave-skip-errors" /etc/my.cnf log-bin = /usr/local/mysql/data/mysql-bin #必须 server-id = 1 #必须 log-slave-updates #必须 auto_increment_increment = 2 #必须 auto_increment_offset = 1 #必须 slave-skip-errors = 1032,1062,1007 #非必须，建议 ########################主库、从库分隔符######################## [root@Slave-Mysql data]# egrep "server-id|log-slave|log-bin|auto_increment|slave-skip-errors|read-only" /etc/my.cnf #log-bin = /usr/local/mysql/data/mysql-bin server-id = 2 log-slave-updates log-bin = /usr/local/mysql/data/mysql-bin #read-only #双主，此选项要注释掉 slave-skip-errors = 1032,1062,1007 auto_increment_increment = 2 #ID自增间隔 auto_increment_offset = 2 #ID初始位置 192.168.199.178: mysql> stop slave; mysql> flush table with read lock; mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000004 | 120 | | | | +------------------+----------+--------------+------------------  （编辑：PHP编程网 - 黄冈站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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