CentOS系统下MySQL 8.0 数据库安装配置

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一、基础环境

1、操作系统：CentOS 7.3

2、MySQL：8.0.13 链接：https://pan.baidu.com/s/1ajtbNl59EftDcvN5gWO56g 提取码：85ik

二、安装MySQL

1、卸载mariadb数据库

rpm -qa | grep mariadb

yum -y remove mariadb-libs-5.5.52-1.el7.x86_64

2、安装相关依赖（本文使用CentOS 7.3镜像做本地离线yum源）

yum -y install openssl-devel perl-JSON

3、解压安装MySQL

tar -xvf mysql-8.0.13-1.el7.x86_64.rpm-bundle.tar

rpm -ivh mysql-community-*.rpm

4、修改配置文件

vim /etc/my.cnf

default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8
max_allowed_packet = 100M

5、初始化数据库并启动

mysqld --initialize
chown mysql:mysql /var/lib/mysql -R
systemctl start mysqld
systemctl enable mysqld

6、查看临时密码并通过临时密码修改MySQL密码

cat /var/log/mysqld.log | grep password

mysqladmin -uroot -pbga/.tkZw4q! password Test1212!

7、赋远程用户权限

mysql -u root -p


create user 'root'@'%' identified with mysql_native_password by 'Test1212!';

grant all privileges on *.* to 'root'@'%' with grant option;

flush privileges;

8、修改localhost登录时密码，防止本机登录失败

mysql -uroot -p -h 192.168.0.101

ALTER USER 'root'@'localhost' IDENTIFIED BY 'Test1212!';

flush privileges;

9、修改加密规则

MySql8.0版本和5.0的加密规则不一样，而现在的可视化工具只支持旧的加密方式,如果不修改的话可视化工具可能打不开数据库

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root' PASSWORD EXPIRE NEVER;

flush privileges;