mysql 主从配置笔记

Posted 2020-10-15 Mars、一切都会好起来

1.master配置

server-id=1
log-bin=mysql-bin
binlog-do-db=testdata
binlog-ignore-db=mysql

 2.master增加用户

 grant replication slave on *.* to ‘test‘ @‘192.168.176.%‘ identified by ‘123456‘;

 3.从数据库检测是否可以远程连接主数据库

笔记：防火墙3306端口开通 iptables -I INPUT -s 0/0 -p tcp --dport 3306 -j ACCEPT  查看iptables -L -n|grep 3306

4.从数据库配置

server-id=2
expire_logs_days=10
max_binlog_size=100M
relay-log=slave-relay-bin
relay-log-index=salve-relay-bin.index

5.登录从数据库

1.reset slave；

2.change master to master_host=‘192.168.176.3‘,master_port=3306,master_user=‘test‘,master_password=‘123456‘,master_log_file=‘mysql-bin.000003‘,master_log_pos=120;

,master_log_file与master_log_pos 在主数据库 show master status；中查看

3.start slave；

笔记，不同数据库复制库表 ：mysqldump testdata -uroot -proot --add-drop-table | mysql -h 192.168.176.4 testdata -u root -proot
前提，1.目标数据库建好库 CREATE DATABASE  `wordpress` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

           2.授权远程连接GRANT ALL PRIVILEGES ON *.* TO [email protected]"%" IDENTIFIED BY "root";

 

mysql重启  service mysqld restart 配置文件 :/etc/my.cnf