Centos7使用rpm安装mysql 5.7.43

Centos7使用rpm安装mysql 5.7.43

1、下载rpm包

wget
https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.43-1.el7.x86_64.rpm-bundle.tar

2、解压并安装

tar xf mysql-5.7.43-1.el7.x86_64.rpm-bundle.tar
yum -y install mysql-*

3、按需修改mysql配置

#注意：自定义datadir目录要给mysql用户授权

vim /etc/my.cnfchown -R mysql.mysql /opt/mysql

4、启动mysql并添加开机自启动

systemctl start mysqld
systemctl enable mysql

5、查看初始密码并登录mysql验证

grep password /opt/mysql/mysqld.log
mysql -uroot -p
#输入上面查到的密码

6、修改密码

如果设置的密码过于简单，上面执行会报错

mysql> alter user  user() identified by 'root';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirementsmysql> alter user  user() identified by 'root!Passwrd';
Query OK, 0 rows affected (0.00 sec)
#刷新权限使生效
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

简单密码报错解决方法1（推荐）：

设置8位及以上密码来保证安全性

解决方法2：

降低密码复杂度及修改密码过期策略

#设置密码不过期
mysql> set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)
#设置密码长度为1
mysql> set global validate_password_length=1;
Query OK, 0 rows affected (0.00 sec)
#修改密码
mysql> alter user  user() identified by 'root';
Query OK, 0 rows affected (0.00 sec)
#刷新权限使生效
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

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