Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm having trouble using openldap's olc to modify a schema without shutting down the server. To test some things out, I made the following schema:

objectIdentifier tests        orgUlyssisOID:4
objectIdentifier testAttribute    tests:1
objectIdentifier testObjectClass  tests:2

attributeType ( testAttribute:1 NAME 'attr1'
        DESC 'attribuut 1'
        SYNTAX '' )

attributeType ( testAttribute:2 NAME 'attr2'
        DESC 'attribuut 2'
        SUP userPassword
        SINGLE-VALUE )

objectclass ( testObjectClass:1 NAME 'class1'
    DESC 'objectclass 1'
    SUP top
    MUST (attr1 $ attr2 ) )

And added it to a new schema called test. (cn={9}test.ldif in cn=schema). Now I can't seem to figure out how to delete class1 from that schema. I use the following LDIF (and tried lots of variations too, to no avail)

dn : cn={9}test,cn=schema,cn=config
changetype: modify
delete: olcObjectClasses 
olcObjectClasses: ( testObjectClass:1 NAME 'class1' DESC 'objectclass 1' SUP top STRUCTURAL MUST ( attr1 $ attr2 ) )

Running ldapmodify -x -W -D cn=admin,cn=config -f test.ldif -d 0 gives no output. -d 1 gives this:

ldap_new_connection 1 1 0
ldap_connect_to_host: TCP localhost:389
ldap_new_socket: 4
ldap_prepare_socket: 4
ldap_connect_to_host: Trying
ldap_pvt_connect: fd: 4 tm: -1 async: 0
ldap_open_defconn: successful
ber_scanf fmt ({it) ber:
ber_scanf fmt ({i) ber:
ber_flush2: 38 bytes to sd 4
ldap_result ld 0x7f2a8ccf3430 msgid 1
wait4msg ld 0x7f2a8ccf3430 msgid 1 (infinite timeout)
wait4msg continue ld 0x7f2a8ccf3430 msgid 1 all 1
** ld 0x7f2a8ccf3430 Connections:
* host: localhost  port: 389  (default)
  refcnt: 2  status: Connected
  last used: Mon Sep 10 11:29:57 2012

** ld 0x7f2a8ccf3430 Outstanding Requests:
 * msgid 1,  origid 1, status InProgress
   outstanding referrals 0, parent count 0
  ld 0x7f2a8ccf3430 request count 1 (abandoned 0)
** ld 0x7f2a8ccf3430 Response Queue:
  ld 0x7f2a8ccf3430 response count 0
ldap_chkResponseList ld 0x7f2a8ccf3430 msgid 1 all 1
ldap_chkResponseList returns ld 0x7f2a8ccf3430 NULL
read1msg: ld 0x7f2a8ccf3430 msgid 1 all 1
ber_get_next: tag 0x30 len 12 contents:
read1msg: ld 0x7f2a8ccf3430 msgid 1 message type bind
ber_scanf fmt ({eAA) ber:
read1msg: ld 0x7f2a8ccf3430 0 new referrals
read1msg:  mark request completed, ld 0x7f2a8ccf3430 msgid 1
request done: ld 0x7f2a8ccf3430 msgid 1
res_errno: 0, res_error: <>, res_matched: <>
ldap_free_request (origid 1, msgid 1)
ber_scanf fmt ({iAA) ber:
ber_scanf fmt (}) ber:
ldap_free_connection 1 1
ber_flush2: 7 bytes to sd 4
ldap_free_connection: actually freed

So no real indication of an error. Where am I doing it wrong? Bonus question: If I have some entries of a certain objectclass, can I modify it (add/remove attributeTypes) without removing the entries?

Thanks in advance for all help.

share|improve this question

You should probably be able to remove any schema entry that isn't in use, but I haven't tried it. This answer covers the bonus question. 'slapd -d something' might illuminate what's going on with the first question.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.