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February, 2013
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Viewing posts from February, 2013
LDAP 目录设计
Posted by:
JiaLiang Liao
in
Linux | Shell
12 years, 2 months ago
目录介绍
LDAP 目录中的信息是是按照树型结构组织,具体信息存储在条目(entry)的数据结构中。条目相当于关系数据库中表的记录。
每个条目具有唯一的 DN,用来引用条目,DN 相当于关系数据库表中的关键字
每个条目可以有多个属性,属性由类型(Type)和一个或多个值(Values)组成,相当于关系数据库中的字段(Field)由字段名和数据类型组成。
LDAP 的信息是以树型结构存储的,在树根一般定义国家 (c=CN) 或域名 (dc=com),在其下则往往定义一个或多个组织 (o=Acme) 或组织单元 (ou=People)。
LDAP 支持对条目能够和必须支持哪些属性进行控制,这是有一个特殊的称为对象类别 (objectClass) 的属性来实现的。
对象类别 (objectClass) 规定了该条目能够及至少应该包含哪些属性。例如:inetorgPerson 对象类需要支持 sn(surname) 和 cn(common name) 属性,但也可以包含可选的如邮件,电话号码等属性。
目录的最顶层是目录树的基准,也就是所谓的基准标识名(Base Distinguished Name),1998年,RFC2247 把
DNS
域名编码作为 LDAP(和X.500)的标识名的基础。例如,公司的 Internet 域名是 example.com,按照 RFC2247 把这个
DNS
域名转换为 DN: dc=example,dc=com
规划目录拓扑结构
在规划目录拓朴结构时应该注意以下几点:
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