problems with bdb-indexes

[peter pilsl <pilsl@goldfisch.at>]

I set up a simple ldap-backend to maintain our systems userdatabase.
After finding loads of entries in my log like:

Jan 22 17:51:10 ihf2 slapd[18454]: <= bdb_equality_candidates: (uid) index_param
failed (18)

I looked up the docs and found that this is cause no proper index for uid is
defined.

So I setup a index in slapd.conf

index   uid             eq

Now there are no such messages in my logs again, but ldap-search does not work
anymore !!! And all applications that rely on ldap (postfix, cyrus, nss, pam ..)
dont work proper anymore.

As soon as I remove the index, everything is working fine again. This is very
strange to me. The proper index-file is created in my ldap-directory: uid.bdb
when slapd is started, so I dont think I need to manually create the index after
  setting an index to an already existing ldap-datebase. I also didnt find
anything in the docs about creating an index mannually.


example:
without the uid-index:

$ldapsearch -x uid=peter mail

# extended LDIF
#
# LDAPv3
# base <> with scope sub
# filter: uid=peter
# requesting: mail
#

# peter, user, ihf.local
dn: uid=peter,ou=user,dc=ihf,dc=local
mail: pilsl@ihf-hr.org

# search result
search: 2
result: 0 Success

# numResponses: 2
# numEntries: 1


and now with the index active:


$ldapsearch -x uid=peter mail

# extended LDIF
#
# LDAPv3
# base <> with scope sub
# filter: uid=peter
# requesting: mail
#

# search result
search: 2
result: 0 Success

# numResponses: 1

--------------------------------------------


my slapd.conf:

include         /etc/ldap/schema/core.schema
include         /etc/ldap/schema/cosine.schema
include         /etc/ldap/schema/nis.schema
include         /etc/ldap/schema/inetorgperson.schema
include         /etc/ldap/schema/openldap.schema
include         /etc/ldap/schema/samba.schema
include         /etc/ldap/schema/mail.schema
schemacheck     on
pidfile         /var/run/slapd/slapd.pid
argsfile        /var/run/slapd.args
loglevel        2048
modulepath      /usr/lib/ldap
moduleload      back_bdb
backend         bdb
checkpoint 512 30
database        bdb
suffix          "dc=ihf,dc=local"
directory       "/data/ldap/ihf"
index   objectClass     eq
lastmod         on
rootdn "cn=ldapadmin,dc=ihf,dc=local"
rootpw {SSHA}xxxxxxxxxxxxxxxxxxxxx
Access to *
        by * read
access to attr=userPassword,userPKCS12
        by self write
        by * auth
access to attr=shadowLastChange
        by self write
        by * read
access to *
        by * read
access to dn.base="" by * read
access to *
        by dn="cn=ldapadmin,dc=ihf,dc=local" write
        by self write
        by * read



thnx for any idea,
peter

ps: I use slapd 2.2.26 on a ubuntu 6.10-machine


--
mag. peter pilsl - goldfisch.at
IT-Consulting
Tel: +43-650-3574035
Tel: +43-1-8900602
Fax: +43-1-8900602-15
skype: peter.pilsl
pilsl@goldfisch.at
www.goldfisch.at