Mysql5.7主从部署

database

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;

 

本文来自云海天,作者:苏冷,转载请注明原文链接:https://www.cnblogs.com/jiangshusheng/p/15853289.html

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