centos7部署mysql5.7

1.下载mysql的官方yum源

wget http://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

2.安装yum源

yum -y install mysql57-community-release-el7-11.noarch.rpm

3.安装秘钥文件

rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

4.安装mysql5.7

yum install mysql-community-server

5.启动mysql

 systemctl start mysqld

6.设置开机自启

systemctl enable mysqld

7.修改密码
#在mysql日志文件中找到初始密码

grep pass  /var/log/mysqld.log

#登录mysql

mysql -uroot -pO#)2Mu2#DNt)

#修改密码

use mysql
ALTER USER 'root'@'localhost' IDENTIFIED BY 'password';

#查看密码策略

show variables like 'validate_password%';

#设置密码长度为6

mysql> set global validate_password_length=6;

#设置密码要包含大小写字母的个数

set global validate_password_mixed_case_count=0;

#设置允许远程访问

grant all privileges on *.* to root@"%" identified by "pasword";
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'pasword';
#刷新权限
flush privileges; 
#查看是否成功select host,user from user;

设置不区分大小写
修改/etc/my.cnf配置文件

[mysqld]
lower_case_table_names=1
重启mysql
systemctl restart mysqld
查看修改是否生效
mysql -uroot -ppassword
SHOW VARIABLES LIKE 'lower_case_table_names';