MYSQL主从复制部署流程

环境准备：

部署一主一从两台服务器，实现主从复制，主库要开启binlog，主库和从库的Server-id要不同

主库:

[[email protected] ~]# hostname -I

10.0.0.51 172.16.1.51

[[email protected] ~]# egrep "log_bin|server-id" /etc/my.cnf

server-id = 1                #主库的Server-id

log_bin = mysql-bin    #开启binlog

从库：

[[email protected] ~]# hostname -I

10.0.0.52 172.16.1.52

[[email protected] ~]# egrep "server-id" /etc/my.cnf

server-id = 2               #从库的Server-id

主库操作：

1、创建用户，用于主从连接

mysql> grant replication slave on *.* to ‘rep‘@‘172.16.1.%‘ identified by ‘123456‘;

mysql> flush privileges;

mysql> select user,host from mysql.user;

2、锁表，禁止写入数据

mysql> flush table with read lock;

3、新开启一个窗口导出主库数据

[[email protected] ~]# mysqldump  -A -B --master-data=2 >/opt/3306.sql

4、解锁，开放用户写入功能

mysql> unlock tables;

5、把主库的备份数据拷贝到从库

[[email protected] ~]# scp /opt/3306.sql 172.16.1.52:/opt/

从库操作：

1、把主库的全备导入到从库

[[email protected] ~]# mysql </opt/3306.sql

2、找binlog位置点

[[email protected] ~]# sed -n ‘22p‘ /opt/3306.sql

-- CHANGE MASTER TO MASTER_LOG_FILE=‘oldboy-bin.000010‘, MASTER_LOG_POS=405;

3、配置master.info

CHANGE MASTER TO

MASTER_HOST=‘172.16.1.51‘,

MASTER_PORT=3306,

MASTER_USER=‘rep‘,

MASTER_PASSWORD=‘oldboy123‘,

MASTER_LOG_FILE=‘mysql-bin.000010‘,

MASTER_LOG_POS=405;

4、开启同步功能，查看状态

mysql> start slave;

mysql> show slave status\G

出现以下状态信息，表示主从复制配置成功

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Seconds_Behind_Master: 0