CentOS7下安装MySQL8.0.15数据库

下载包

 wget http://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

安装源

yum localinstall mysql80-community-release-el7-1.noarch.rpm

检查源

yum repolist enabled | grep "mysql.*-community.*"

选择安装组件

修改 vim /etc/yum.repos.d/mysql-community.repo源

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安装MySQL

shell> yum install mysql-community-server

启动MySQL服务

shell> systemctl start mysqld

开机启动

shell> systemctl enable mysqld
shell> systemctl daemon-reload

忘记密码，修复密码

-- 忘记密码则无密码进入
my.cnf 添加[mysqld] skip-grant-tables保存，重启
-- 初次安装则获取密码
grep 'temporary password' /var/log/mysqld.log
--   清空密码
update user set authentication_string = '' where user = 'root';
mysql -uroot -p
-- 重新设置新的root密码
　ALTER USER 'root'@'localhost' IDENTIFIED BY'你的密码';
-- 修改host为匹配所有
update user set host="%" where user='root';
-- 配置外网访问
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY'51//Hengyi';
-- 刷新
 flush privileges;

配置远程访问

create user '你的账号'@'%' IDENTIFIED WITH mysql_native_password BY '你的密码.';
grant all privileges on *.* to 账号@'%' with grant option;
//或
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'Admin123!' WITH GRANT OPTION;
flush privileges;

修复数据库

mysql -u root -p
mysql> SET GLOBAL innodb_fast_shutdown = 1;
mysql_upgrade -u root -p

卸载MySQL8.0

yum remove mysql-community-server
rpm -qa | grep mysql
yum remove mysql*