openldap-technical

openldap-technical@openldap.org

11 participants
9690 discussions

how to migrate an openldap server to a new linux server
by xpzhang1971＠gmail.com 26 Mar '24

26 Mar '24

I have an openldap server I want to clone it to another linux server. However, I can't access it by login but can just run ldapsearch because this source openldap server only open port 389. Now I installed openldap-servers package to target linux server, then what? I appreciate if anybody can instruct me or direct me to useful documents.

5 14

etensibleObject vs. creating a new schema
by Uwe Sauter 26 Mar '24

26 Mar '24

Hi all, I was wondering if there is any best practice when to use extensibleObject in contrast to creating new objectClasses within a local schema. E.g. I have the need to filter the visibility of posixGroups depending on some attribute when sssd is accessing the directory. What I could do is to use an extra objectClass: extensibleObject to allow all defined attributes (e.g. host) to be used within my object. I could also create a new objectClass ( 2.25.$UUID.1.2.1 NAME 'myGroup' DESC 'Group with host attribute' SUP posixGroup AUXILIARY MAY host ) As far as I can tell using extensibleObject has the disadvantage to more or less disable the checks for correct attribute usage. Are there more positive or negative aspects to extensibleObject? I'd like to hear your thought on this. Thanks, Uwe

1 0

Logo usage
by Gloria Semme 21 Mar '24

21 Mar '24

Dear OpenLDAP Technical Team, I am reaching out to seek your guidance and permission regarding the use of the OpenLDAP logo. My team is in the process of creating a Grafana integration designed to facilitate the monitoring of OpenLDAP applications for our users. To enhance user experience and direct attention effectively, we plan to incorporate the OpenLDAP logo within the Grafana Cloud interface. Upon reviewing the available licensing information, we noted the absence of specific guidelines related to the use of the OpenLDAP logo. Given this, we wish to ensure our use aligns with your expectations and policies. Our design considerations include adjusting the logo to fit a square format to suit the dashboard's aesthetic. We are committed to respecting your branding guidelines and are open to any alternative suggestions or requirements you may have. We appreciate your support in this endeavor and look forward to your guidance. Thank you for your guidance. Best regards, -- [image: photo] *Gloria Semme* Sr. Engineering Manager Cloud Infrastructure Observability gloria.semme(a)grafana.com www.grafana.com

2 1

olcDbURI
by Bradley T Gill 15 Mar '24

15 Mar '24

Good Morning Group. I am struggling to find any documentation on this. Is there a limit to the amount of olcDbURI that can be defined for SASL? While I'm here, I might as well ask if there is a way to make it more resilient? Our servers get quarantined during pathing of AD and eventually SASL is broken until I restart OpenLDAP. Thanks! Bradley Gill

1 0

Lock conflicts?
by rzhou44＠tutamail.com 12 Mar '24

12 Mar '24

At work we have a program that actively reads/writes into LMDB file. This program uses MDB_NOLOCK (why, I'm not sure yet). Can I safely read/write to this LMDB file using my own programs or mdb_ command line tools? I worry that those (which by default use lock files) could conflict with the manual locking of the existing program and cause data corruptions. Thanks -Zhou

2 3

Configure replication without a plaintext password.
by mbalakri＠opentext.com 08 Mar '24

08 Mar '24

How to configure olcSyncrepl without a plaintext password? I tried using credentials="{SSHA256}jRlrKRCcrhYo7SqbPDc5WkoSxaHc8y/e0DPWaAnveUkQpQ7wEOWhsw==" format. Does olcSyncrepl accepts password in {SSHA256} format?

5 8

LMDB fix sized key and data question
by anton＠pcloud.com 07 Mar '24

07 Mar '24

Hello, I'm designing an application that will use LMDB. All (or almost all) of my databases will have a fixed size integer key (64bit) and fixed size data. Data is larger than a single integer but generally in 16-32 bytes range (range is for different databases, each database has a fixed data format). I'll not have duplicate key records. I'll mostly insert and retrieve single records. The question is would I benefit and should I use MDB_DUPSORT|MDB_DUPFIXED? Also the documentation says that MDB_DUPFIXED may only be used with MDB_DUPSORT. However I see code that specifically checks for MDB_DUPFIXED without MDB_DUPSORT and only then sets a flag for DUPFIXED records. However I did not get too deep in the code. https://github.com/LMDB/lmdb/blob/mdb.master/libraries/liblmdb/mdb.c#L7743 My point is that with fixed sized keys and values the btree may chose not to store record sizes, may not use pointers for the binary search but to search values instead and so on. Is that the optimization that is being done for MDB_DUPFIXED or is it something that only concerns duplicate values? Best, Anton

2 1

Counter concurrency access
by Pascal Jakobi 06 Mar '24

06 Mar '24

Hi there I am creating a program that needs to increment a counter. Typically a serial number has to be incremented every time I create a certificate. The problem is to handle concurrent access. Fundamentally I need to 1/ read the counter 2/ increment it. Therefore no one must be provided access to the counter during these two operations. Therefore I need to set a lock before the read operation and release it after the update. Is there a way to do this with OL ? I am conscious of the ldapmodify features thanks to Clement, however, this will not lock the read. Thks in adv. P

2 2

slapo-translucent bug?
by Marco Esposito M. 05 Mar '24

05 Mar '24

Dear openldap-technical, I have encountered an issue with slapo-translucent and I am trying to determine whether it is a problem with my configuration or a bug. By mistake, I opened a ticket on OpenLDAP ITS, and rightfully, I have been redirected here. https://bugs.openldap.org/show_bug.cgi?id=10184 The problem is as follows: the results from a translucent OpenLDAP server do not return any entry when a single attribute is present in the query filter. This attribute has been previously modified and is present in the local database of the translucent OpenLDAP server. To better explain the issue, I have set up an environment with containers. The repository is as follows: https://github.com/voidloop/openldap-bug To bring up the environment, two commands are needed: % make submodules % make docker-run Three containers will be running: upstream: a simple LDAP server with a couple of users, listening on port 51389/tcp. buggy: the translucent server from upstream with the problematic behavior, listening on port 52389/tcp. compiled: the translucent server from upstream recompiled with the modified code where I suspect there might be an issue, listening on port 53389/tcp. The containers are simple Fedora instances with OpenLDAP. Once the following ldapmodify command is executed: % ldapmodify -x -D cn=buggy,dc=example,dc=com -w password -H ldap://:52389 <<EOF dn: uid=ciccio,ou=people,dc=example,dc=com changetype: modify replace: uidNumber uidNumber: 99 EOF The following occurs: 1) Querying servers without filters: ------------------------------------------------------------------------------- Server "upstream" ------------------------------------------------------------------------------- % ldapsearch -x -H ldap://:51389 -b ou=people,dc=example,dc=com uid=ciccio # extended LDIF # # LDAPv3 # base <ou=people,dc=example,dc=com> with scope subtree # filter: uid=ciccio # requesting: ALL # # ciccio, people, example.com dn: uid=ciccio,ou=people,dc=example,dc=com objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount uid: ciccio cn: Ciccio Bello sn: Bello uidNumber: 1000 gidNumber: 1000 homeDirectory: /home/ciccio # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 ------------------------------------------------------------------------------- Translucent server "buggy" ------------------------------------------------------------------------------- % ldapsearch -x -H ldap://:52389 -b ou=people,dc=example,dc=com uid=ciccio # extended LDIF # # LDAPv3 # base <ou=people,dc=example,dc=com> with scope subtree # filter: uid=ciccio # requesting: ALL # # ciccio, people, example.com dn: uid=ciccio,ou=people,dc=example,dc=com objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount uid: ciccio cn: Ciccio Bello sn: Bello uidNumber: 99 gidNumber: 1000 homeDirectory: /home/ciccio # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 ------------------------------------------------------------------------------- Translucent server "compiled" ------------------------------------------------------------------------------- % ldapsearch -x -H ldap://:53389 -b ou=people,dc=example,dc=com uid=ciccio # extended LDIF # # LDAPv3 # base <ou=people,dc=example,dc=com> with scope subtree # filter: uid=ciccio # requesting: ALL # # ciccio, people, example.com dn: uid=ciccio,ou=people,dc=example,dc=com objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount uid: ciccio cn: Ciccio Bello sn: Bello uidNumber: 99 gidNumber: 1000 homeDirectory: /home/ciccio # search result search: 2 result: 0 Success # numResponses: 2 So far, everything is okay, no anomalous behavior. The issue arises when a filter is introduced. 2) Querying servers with a filter ------------------------------------------------------------------------------- Server "upstream" ------------------------------------------------------------------------------- % ldapsearch -x -H ldap://:51389 -b ou=people,dc=example,dc=com uid=ciccio uidNumber # extended LDIF # # LDAPv3 # base <ou=people,dc=example,dc=com> with scope subtree # filter: uid=ciccio # requesting: uidNumber # # ciccio, people, example.com dn: uid=ciccio,ou=people,dc=example,dc=com uidNumber: 1000 # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 ------------------------------------------------------------------------------- Translucent server "buggy" (!!) ------------------------------------------------------------------------------- % ldapsearch -x -H ldap://:52389 -b ou=people,dc=example,dc=com uid=ciccio uidNumber # extended LDIF # # LDAPv3 # base <ou=people,dc=example,dc=com> with scope subtree # filter: uid=ciccio # requesting: uidNumber # # search result search: 2 result: 0 Success # numResponses: 1 ------------------------------------------------------------------------------- Translucent server "compiled" ------------------------------------------------------------------------------- % ldapsearch -x -H ldap://:53389 -b ou=people,dc=example,dc=com uid=ciccio uidNumber # extended LDIF # # LDAPv3 # base <ou=people,dc=example,dc=com> with scope subtree # filter: uid=ciccio # requesting: uidNumber # # ciccio, people, example.com dn: uid=ciccio,ou=people,dc=example,dc=com uidNumber: 99 # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 Why does this behavior occur? I expect the "buggy" server to return the uidNumber attribute. The version of OpenLDAP in the container is the one installed with the Fedora package manager. Server configurations are available in the Git repository, but for convenience, I am listing them here: upstream: https://github.com/voidloop/openldap-bug/blob/main/upstream/slapd.ldif https://github.com/voidloop/openldap-bug/blob/main/upstream/entries.ldif buggy: https://github.com/voidloop/openldap-bug/blob/main/buggy/slapd.ldif compiled: https://github.com/voidloop/openldap-bug/blob/main/compiled/slapd.ldif The source code modification is as follows: % diff openldap/servers/slapd/overlays/translucent.c translucent.c -u --- openldap/servers/slapd/overlays/translucent.c 2024-02-29 11:30:52.620837844 +0100 +++ translucent.c 2024-02-29 11:14:11.274843929 +0100 @@ -928,16 +928,7 @@ /* send it now */ rs->sr_entry = re; rs->sr_flags |= REP_ENTRY_MUSTBEFREED; - if ( test_f ) { - rc = test_filter( op, rs->sr_entry, tc->orig ); - if ( rc == LDAP_COMPARE_TRUE ) { - rc = SLAP_CB_CONTINUE; - } else { - rc = 0; - } - } else { - rc = SLAP_CB_CONTINUE; - } + rc = SLAP_CB_CONTINUE; } } else if ( le ) { /* Only a local entry: remote was deleted I have also found posts from individuals who have identified the same issue, but either received no response or the response was unsatisfactory: https://openldap.org/lists/openldap-technical/201304/msg00069.html https://www.openldap.org/lists/openldap-bugs/200905/msg00159.html https://www.openldap.org/lists/openldap-technical/201106/msg00036.html Thank you for your attention, and I apologize for the lengthy message. Marco

2 2

OpenLDAP SQL
by kimkihoon 05 Mar '24

05 Mar '24

I'm trying to use mysql external db server for openLDAP db. I just read this README file from openldap github(https://github.com/openldap/openldap/blob/master/servers/slapd/back-… But it seems only localhost server can be used. Can anyone tell me how? Thx for the help

3 2

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

openldap-technical