mysql 配置

首先查看centos是否已经安装了mysql源

yum list installed mysql*
如果有就删除
yum remove mysql-community-*

安装mysql源

https://dev.mysql.com/downloads/repo/yum/

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

安装mysql

yum -y install mysql57-community-release-el7-10.noarch.rpm

查看是否已经安装了数据库源

yum repolist all | grep mysql

查看数据库源

/etc/yum.repos.d/mysql-community.repo
修改源可用 mysql80  enable = 1

安装数据库服务

yum install mysql-server

启动mysql

systemctl start mysqld.service

查看状态

systemctl status mysqld.service

查看初始密码

grep "password" /var/log/mysqld.log

修改密码

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';

注意:密码设置必须要大小写字母数字和特殊符号（,/';:等）,不然不能配置成功

开启mysql的远程访问 两种方式

• 方式1

grant all privileges on *.* to 'root'@'192.168.0.1' identified by 'password' with grant option;

flush privileges;

• 方式2

use mysql;
update user set host = '%' where user = 'root';

更细权限之后，一定要刷新一下，否则不会生效

flush privileges;