Mysql-5.7主从部署-yum方式

一、环境准备

# rpm -qa |grep mariadb |xargs yum remove -y

 

# setenforce 0(临时关闭),(selinux配置文件:SELINUX=disabled,需重启生效)

 

# systemctl stop iptables

 

# systemctl stop firewalld

 

# systemctl disable firewalld.service

 

二、安装MySQL 5.7(2个节点都需要安装)

# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

 

# yum -y install mysql57-community-release-el7-10.noarch.rpm

 

# yum -y install mysql-community-server    

                                   

三、配置MySQL

  1. more /var/log/mysqld.log 查看初始口令

 

  1. 修改初始口令(2个节点都需要修改)

# set global validate_password_length=4;(重启失效)

 

# set global validate_password_policy=0;(重启失效)

 

# ALTER USER 'root'@'localhost' IDENTIFIED BY '新密码';

 

  1. 配置IPV4端口(2个节点都需要配置)

# echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6

 

# echo 1 > /proc/sys/net/ipv6/conf/default/disable_ipv6

 

##在/etc/my.conf下面添加bind-address=0.0.0.0,重启mysql数据库

 

四、配置主从

主节点:

1.配置文件my.cof中添加下列

#启用二进制日志

log-bin=mysql-bin

 

#服务器唯一ID,一般取IP最后一段

server-id=195(自定义一个不重复数值)

 

  1. 新建同步账号slave

# CREATE USER 'slave'@'%' IDENTIFIED BY '密码';

# GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'slave'@'%';

# flush privileges;

 

  1. 记录信息

# show master status;

 

从节点:

1.配置文件my.cof中添加下列

server-id=215(自定义一个不重复数值)

log-bin=mysql-slave-bin

relay_log=edu-mysql-relay-bin

 

  1. 建立主从连接

# change master to master_host='10.27.134.195', master_user='slave', master_password='密码', master_port=3306, master_log_file='mysql-bin.000006(主节点file号)', master_log_pos= 154(主节点日志号), master_connect_retry=30;

 

  1. 查看连接状态

# show slave status \G;

 

五、主从验证

  1. 在主节点上新建库

# create database hfzwy;

 

  1. 在从节点上查看是否同步

# show databases;

 

posted @ 2022-01-28 17:18  苏冷  阅读(181)  评论(0编辑  收藏  举报