How to define an auto-increment number for LDAP structure?

Question

I have one attribute (groupIDNumber), I want to make it work as auto-increment number?

How can we define that attr?

Thank for your help,

-nm

I don't think you can do that - LDAP has no concept of "auto-increment" — marc_s, Nov 13 '09 at 08:35

beldaz · Answer 1 · 2014-10-23T01:06:02.440

4

This blog suggests that you can achieve the equivalent by creating a new object that is sort of a sequence. A working implementation in OpenLDAP is reported here. The object is defined as follows (note: not my code, just reproducing what was reported):

----------------------------------------------
objectClass ( 1.3.6.1.4.1.4203.666.599
    NAME 'uidNext'
    SUP top STRUCTURAL
    MUST ( cn $ uidNumber ) )
----------------------------------------------

LDIF entiries are then written as:

--- increment.ldif ------------------------------- 
dn: cn=uidNext,dc=example,dc=com
changetype: modify
increment:uidNumber
uidNumber: 1
-
---- EOF ------------------------------------------

And called with:

$ ldapadd -x -D "cn=Admin,dc=example,dc=com" -wsecret -f ./autoinc.ldif

edited Oct 23 '14 at 01:06

answered Oct 23 '14 at 00:59

beldaz

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Not recommended. The LDAP should not control it for various reason. And thus LDAP RFC do not define the same for posix accounts. – Balaji Boggaram Ramanarayan Apr 19 '18 at 20:42
3

@BalajiBoggaramRamanarayan useful to know, but what do you suggest as an alternative? – beldaz Apr 19 '18 at 22:56

score 2 · Answer 2 · answered Nov 22 '09 at 21:32

2

This is not part of the LDAP protocol, nor is it a standard thing to do. It is something you would normally do in your client-side logic. However, depending on which LDAP server you are using, it may be possible to achieve using a plugin or extension.

answered Nov 22 '09 at 21:32

Andrew Strong

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How to define an auto-increment number for LDAP structure?

2 Answers2