一键安装mysql5.7及密码策略修改办法

发布时间：2022-03-08 12:07 所属栏目：115 来源：互联网

导读：一键安装mysql5.7及密码策略修改方法：一、一键安装Mysql脚本 [root@uat01 ~]# cat InstallMysql01.sh #!/bin/bash #2018-10-13 #旅行者-Travel #1.安装wget yum -y install wget #2、下载mysql的yum源 URL=https://repo.mysql.com//mysql80-community-rele

  一键安装mysql5.7及密码策略修改方法：

一、一键安装Mysql脚本

[root@uat01 ~]# cat InstallMysql01.sh
#!/bin/bash
#2018-10-13
#旅行者-Travel
#1.安装wget
yum -y install wget
#2、下载mysql的yum源
URL="https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm"
wget $URL -P /etc/yum.repos.d/
yum -y install yum-utils #如果没有该包，下边执行yum-config-manager不生效
yum -y install /etc/yum.repos.d/mysql80-community-release-el7-1.noarch.rpm
if [ $? -eq 0 ];then
  rm -rf /etc/yum.repos.d/mysql80-community-release-el7-1.noarch*

二、修改策略和密码

执行完以上脚本可以看到Mysql的密码，如下方法登录修改策略，因为默认密码要求比较高，可以根据自己需求来决定是否更改策略：

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

三、数据库密码策略：

1、查看数据库策略：

因为上文已经将 validate_password_length 值改为4，所以下文显示为4，默认情况下为8

[root@uat01 ~]# mysql -uroot -p
.....
Server version: 5.7.23 MySQL Community
......
mysql> show variables like 'validate_password%';
+--------------------------------------+-------+
| Variable_name      | Value |
+--------------------------------------+-------+
| validate_password_check_user_name | OFF |
| validate_password_dictionary_file | |
| validate_password_length    | 4 |
| validate_password_mixed_case_count | 1 |
| validate_password_number_count | 1 |
| validate_password_policy    | LOW |
| validate_password_special_char_count | 1 |
+--------------------------------------+-------+
7 rows in set (0.00 sec)

mysql>
2、各项值说明

validate_password_policy：密码安全策略，默认MEDIUM策略

策略检查规则
0 or LOW Length
1 or MEDIUM Length; numeric, lowercase/uppercase, and special characters
2 or STRONG Length; numeric, lowercase/uppercase, and special characters; dictionary file
validate_password_dictionary_file：密码策略文件，策略为STRONG才需要

validate_password_length：密码最少长度，测试发现最小值得为4。
validate_password_mixed_case_count：大小写字符长度，至少1个

validate_password_number_count ：数字至少1个

validate_password_special_char_count：特殊字符至少1个

3、修改策略，跟上文第二操作一样

mysql> set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)
mysql> set global validate_password_length=4;
Query OK, 0 rows affected (0.00 sec),
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
4、修改简单密码测试

mysql> alter user 'root'@'localhost' identified by '1234'; #测试发现密码长度最少为4位
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> quit
Bye
[root@uat01 ~]# mysql -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

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