mysql主从服务器配置

主从MySQL服务器

[root@localhost ~]# yum -y install ntpdate

[root@localhost ~]# ntpdate cn.ntp.org.cn

[root@localhost ~]# yum -y install rsync

[root@localhost ~]# vim mysql.sh

#!/bin/bash

yum list installed |grep libaio

if [ $? ne 0 ]; then

yum -y install libaio

fi

echo libaio yes

rm -rf /etc/my.cnf

echo remo my.cnf yes

tar -xf mysql-8.0.33-linux-glibc2.12-x86_64.tar.xz

echo tar zx yes

cp -r ~/mysql-8.0.33-linux-glibc2.12-x86_64 /usr/local/mysql

echo copy file to /usr/local/mysql yes

mkdir /usr/local/mysql/mysql-files

echo mysql-files yes

grep mysql /etc/passwd

useradd -r -s /sbin/nologin mysql

chown mysql:mysql /usr/local/mysql/mysql-files

chmod 750 /usr/local/mysql/mysql-files

/usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/

/usr/local/mysql/bin/mysql_ssl_rsa_setup --datadir=/usr/local/mysql/data

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql8

sed -i 'aexport PATH=/usr/local/mysql/bin:PATH' /etc/profile

source /etc/profile

[root@localhost ~]# bash mysql.sh

9,Rg+?q3jxlc

[root@localhost ~]# service mysql8 start

[root@localhost ~]# vim /usr/local/mysql/my.cnf

[mysqld]

basedir=/usr/local/mysql

datadir=/usr/local/mysql/data

socket=/tmp/mysql.sock

port=3306

log-error=/usr/local/mysql/data/db01-master.err

log-bin=/usr/local/mysql/data/binlog

server-id=10

character_set_server=utf8mb4

[root@localhost ~]# service mysql8 start

Starting MySQL.Logging to '/usr/local/mysql/data/db01-master.err'.

SUCCESS!

[root@localhost ~]# chkconfig --add mysql8 //开机自启

[root@localhost ~]# chkconfig mysql8 on //同上

[root@localhost ~]# chkconfig --list //同上

[root@localhost ~]# systemctl stop firewalld

[root@localhost ~]# setenforce 0

从服务器配置

[root@localhost ~]# systemctl stop firewalld

[root@localhost ~]# setenforce 0

[root@localhost ~]# vim mysql.sh //注释

#/usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/

#/usr/local/mysql/bin/mysql_ssl_rsa_setup --datadir=/usr/local/mysql/data

[root@localhost ~]# source mysql.sh

[root@localhost ~]# vim /usr/local/mysql/my.cnf

[mysqld]

basedir=/usr/local/mysql

datadir=/usr/local/mysql/data

socket=/tmp/mysql.sock

port=3310

log-error=/usr/local/mysql/data/db01-slave.err

relay-log=/usr/local/mysql/data/relaylog

server-id=11

character_set_server=utf8mb4

[root@localhost ~]# service mysql8 stop //停止主服务器

[root@localhost ~]# rm -rf /usr/local/mysql/data/auto.cnf //防止主从失败

[root@localhost ~]# yum list installed | grep rsync //检查rsync是否安装

[root@localhost ~]# rsync -av /usr/local/mysql/data root@192.168.1.32:/usr/local/mysql/

[root@localhost ~]# service mysql8 start //主从服务器启动服务

[root@localhost ~]# mysql -P3310 -p9,Rg+?q3jxlc //从服务器使用主服务器账户密码可以登录

[root@localhost ~]# cd /usr/local/mysql/

[root@localhost mysql]# ./bin/mysql_secure_installation //无法修改密码所需操作

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0

[root@localhost mysql]# ./bin/mysql -p9,Rg+?q3jxlc

mysql> show variables like 'validate%';

mysql> set global validate_password.length=0; //修改密码所需操作

mysql> show variables like 'validate%';

mysql> create user 'zhangmin'@'%' identified by 'abc_123';

mysql> grant replication slave on *.* to 'zhangmin'@'%';

mysql> flush tables with read lock;

mysql> change master to

-> master_host='192.168.1.31',

-> master_user='zhangmin',

-> master_password='abc_123',

-> master_port=3306,

-> master_log_file='binlog.000003',

-> master_log_pos=707;

从服务器

change master to master_host='192.168.1.31',

master_user='zhangmin',

master_password='abc_123',

master_port=3306,

master_log_file='binlog.000004',

master_log_pos=1092;

mysql> start slave;

mysql> show slave status\G

[root@localhost mysql]# mysql -uzhangmin -pabc_123 -h 192.168.1.31 -P3306 --get-server-public-key //获得远程master主机的公钥

[root@localhost mysql]# mysql -P3310 -p

mysql> stop slave;

mysql> reset slave;

mysql> change master to master_host='192.168.1.31',

-> master_user='zhangmin',

-> master_password='abc_123',

-> master_port=3306,

-> master_log_file='binlog.000004',

-> master_log_pos=1092;

mysql> start slave;

主服务器

mysql> unlock tables; //解锁⽂件

mysql> create database if not exists test charset utf8mb4;

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