企业版V6口令复杂度配置
瀚高数据库企业版V6在创建新用户设置口令或修改已有用户口令时,默认要符合以下规则:
(1)最短长度8位,最长长度1024位。开关参数passwordlength,默认on。
(2)须同时含有数字 、大小写字母和特殊字符,特殊字符包括 “!@#$%^&*()”。不能使用包含瀚高数据库关键字和当前用户名的密码,以及其他被数据库系统认定为过于简单的密码。开关参数passwordstrength,默认on。
(3)不能使用前五次使用过的密码。开关参数passwordhistory,默认on。
(4)创建用户所使用的密码不能含有瀚高保留字、关键字。
关闭以上口令复杂度功能需要使用管理员执行“alter system set passwordxxxx = off”后,重启数据库生效。
例:
1、关闭口令强度要求,设置简单密码
[highgo@host ~]$ psql highgo highgo
highgo=# create user test with password 'cQdGp#n3';
CREATE ROLE
highgo=# alter user test with password 'cqdcqdcqd';
ERROR: Password must contain upper and lower case letters, numbers, and special characters:cqdcqdcqd.
highgo=# alter system set passwordstrength = off;
ALTER SYSTEM
highgo=# \q
[highgo@host ~]$ pg_ctl restart
[highgo@host ~]$ psql highgo highgo
highgo=# alter user test with password 'cqdcqdcqd';
ALTER ROLE
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2、关闭口令长度要求
[highgo@host ~]$ psql highgo highgo
highgo=# alter user test with password 'cqd';
ERROR: The password is too short
highgo=# alter system set passwordlength = off;
ALTER SYSTEM
highgo=# \q
[highgo@host ~]$ pg_ctl restart
[highgo@host ~]$ psql highgo highgo
highgo=# alter user test with password 'cqd';
ALTER ROLE
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3、能重复设置之前的口令
[highgo@host ~]$ psql highgo highgo
highgo=# alter user test with password 'cqdcqdcqd';
ERROR: The password cannot be the same as the old password.
highgo=# alter system set passwordhistory = off;
ALTER SYSTEM
highgo=# \q
[highgo@host ~]$ pg_ctl restart
[highgo@host ~]$ psql highgo highgo
highgo=# alter user test with password 'cqdcqdcqd';
ALTER ROLE
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