centos 7 下 yum 安装 mysql 5.7.25

1、下载 MySQL官方的 yum Repository

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

2、安装 yum 源

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# yum -y install mysql57-community-release-el7-10.noarch.rpm

3、开始安装MySQL服务器

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# yum -y install mysql-community-server

4、配置mysql数据库

启动 mysql 服务

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# systemctl start mysqld

查看初始密码

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# grep "password" /var/log/mysqld.log

登录进入数据库

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# mysql -uroot -p

更改密码校验强度

mysql> set global validate_password_policy=0;
mysql> set global validate_password_length=1;

设置新密码

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

配置root账号可远程连接

mysql> use mysql；
mysql> select  host,user  FROM USER WHERE user='root';
mysql> update user set host= '%'  WHERE user ='root';
mysql> flush privileges;

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注：安装了Yum Repository，以后每次yum操作都会自动更新，需要把这个卸载掉

[root@iZbp19ftqv2b7y3oba2i6tZ ~]# yum -y remove mysql57-community-release-el7-10.noarch

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