CentOS 7.3安装mysql8

一、基础环境

1、操作系统：CentOS 7.3
 

二、安装MySQL

1、卸载mariadb数据库

1 2	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）

1	yum -y install openssl-devel perl-JSON

3、解压安装MySQL

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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

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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

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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

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cat /var/log/mysqld.log | grep password   mysqladmin -uroot -pbga/.tkZw4q! password Test1212!

7、赋远程用户权限

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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

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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

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