yum安装mysql5.7以及主从复制配置

1.mysql5.7 yum源

   rpm -ivh https://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm

2.yum安装mysql

  yum install mysql-community-server

3.修改mysql初始密码

   修改配置文件 vim /etc/my.cnf 

   开启安全模式 在配置文件中加入 skip-grant-tables

   加入 sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER  

   mysql -uroot -p
   update mysql.user set host='%',authentication_string=password('123456'),password_expired='N',password_last_changed=now() where user = 'root';
   flush privileges;
   exit;

4.开启3306端口

   firewall-cmd --zone=public --add-port=3306/tcp --permanent
   systemctl restart firewalld.service

5. 主配置

    vim /etc/my.cnf
    log-bin=mysql-bin
    server-id=1
    innodb_flush_log_at_trx_commit=1
    sync_binlog=1  

   mysql -uroot -p
   grant replication slave on *.* to 'backup'@'%' identified by '123456';
   show master status;
   

  6. 从配置

    vim /etc/my.cnf
    log-bin=mysql-bin
    server-id=2
    mysql -uroot -p
    stop slave;
    change master to master_user='backup',master_password='123456',master_host='192.168.1.80',master_port=3306,master_log_file='mysql-bin.000003',master_log_pos=1159;      start slave;

    show slave status\G; #查看主从