May 2023 - openldap-technical

by abby.knows.it＠gmail.com

We have three nodes and want to replicate between them. This setup worked fine for over a year. Recently replication fails and the slapd process crashes. In a general sense I'm looking for a FAQ on troubleshooting replication, the common issues and solutions. Also how to turn on logging for replication specifically would help. Thanks. Abby

1 day, 12 hours

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RE25 testing call (2.5.15) #1

by Quanah Gibson-Mount

This is the first testing call for OpenLDAP 2.5.15. Depending on the results, this may be the only testing call. NOTE: This release adds support for OpenSSL 3.0 to the 2.5 release series. Generally, get the code for RE25: <https://git.openldap.org/openldap/openldap/-/archive/OPENLDAP_REL_ENG_2_5...> Extract, configure, and build. Execute the test suite (via make test) after it is built. Optionally, cd tests && make its to run through the regression suite. Thanks! OpenLDAP 2.5.15 Engineering Added libldap openssl3 support (ITS#9436, ITS#10030) Fixed libldap handling of TCP KEEPALIVE options (ITS#10015) Fixed libldap with async connections (ITS#10023) Fixed libldap openssl TLSv1.3 cipher suite handling (ITS#10035) Fixed slapd callback handling with overlays that do extended operations (ITS#9990) Fixed slapd conversion of pcache configurations (ITS#10031) Fixed slapd cn=config modification handling with abandon (ITS#10045) Fixed slapo-constraint handling of push replication (ITS#9953) Fixed slapo-dynlist filter evaluation efficiency (ITS#10041) Fixed slapo-pcache handling of invalid schema (ITS#10032) Fixed slapo-ppolicy handling of push replication (ITS#9953) Fixed slapo-ppolicy handling of pwdMinDelay (ITS#10028) Fixed slapo-syncprov abandon handling (ITS#10016) Fixed slapo-translucent handling of invalid schema (ITS#10032) Fixed slapo-unique handling of push replication (ITS#9953) Fixed slapo-variant to improve regex handling (ITS#10048) Build Environment Fixed compatibility with stricter C99 compilers (ITS#10011) Keep .pc files during make clean (ITS#9989) Contrib Fixed slapo-variant handling of push replication (ITS#9953) Minor Cleanup ITS#9855 ITS#9995 ITS#9996 ITS#9997 ITS#9998 ITS#9999 ITS#10000 ITS#10003 ITS#10004 ITS#10033 ITS#10037 ITS#10039 ITS#10046 Regards, Quanah

1 week, 4 days

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RE26 testing call (2.6.5) #1

by Quanah Gibson-Mount

This is the first testing call for OpenLDAP 2.6.5. Depending on the results, this may be the only testing call. Generally, get the code for RE26: <https://git.openldap.org/openldap/openldap/-/archive/OPENLDAP_REL_ENG_2_6...> Extract, configure, and build. Execute the test suite (via make test) after it is built. Optionally, cd tests && make its to run through the regression suite. Thanks! OpenLDAP 2.6.5 Engineering Fixed libldap handling of TCP KEEPALIVE options (ITS#10015) Fixed libldap with async connections (ITS#10023) Fixed libldap openssl TLSv1.3 cipher suite handling (ITS#10035) Fixed slapd callback handling with overlays that do extended operations (ITS#9990) Fixed slapd conversion of pcache configurations (ITS#10031) Fixed slapd cn=config modification handling with abandon (ITS#10045) Fixed slapd-mdb online indexer termination and cleanup (ITS#9993) Fixed slapd-mdb online indexer when interrupted (ITS#10047) Fixed slapd-monitor connection cleanup (ITS#10042) Fixed slapo-constraint handling of push replication (ITS#9953) Fixed slapo-dynlist filter evaluation efficiency (ITS#10041) Fixed slapo-pcache handling of invalid schema (ITS#10032) Fixed slapo-ppolicy handling of push replication (ITS#9953) Fixed slapo-ppolicy handling of pwdMinDelay (ITS#10028) Fixed slapo-syncprov abandon handling (ITS#10016) Fixed slapo-translucent handling of invalid schema (ITS#10032) Fixed slapo-unique handling of push replication (ITS#9953) Fixed slapo-variant to improve regex handling (ITS#10048) Build Environment Fixed compatibility with stricter C99 compilers (ITS#10011) Keep .pc files during make clean (ITS#9989) Contrib Fixed slapo-variant handling of push replication (ITS#9953) Minor Cleanup ITS#9855 ITS#9995 ITS#9996 ITS#9997 ITS#9998 ITS#9999 ITS#10000 ITS#10003 ITS#10004 ITS#10033 ITS#10037 ITS#10039 ITS#10046 Regards, Quanah

1 week, 4 days

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Only view exact match on ACL

by Lukas Adrian Kron

Hello, I would like to restrict bind users in the search. I've already managed that they only see groups for which you have been activated. Now I have the problem that bind users should only see users in the people branch if they know the exact user name in the search. So far I have solved the whole thing using the following two ACL sets. You can now also search for people. Since I had to include objectClass for the search to work, you can search for all people or for other values. However, I want all the data I specify to be displayed, but only if the username returns an exact result. I am at the end of my knowledge with the ACL sets. All the Info on ACL cannot help me further here. {5} to dn.exact="ou=Personen,dc=SERVER" by group.exact="GROUP" search by * break {6} to dn.one="ou=Personen,dc=SERVER" attrs=entry,cn,objectClass,givenname,uid,mail,sn,userPassword by group.exact="GROUP" read by * break Thanks a lot. Kindly Lukas Adrian

1 week, 5 days

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SSL timeout

by Robert T Dunn

We are experiencing a problem with SSL timeout as reported with issue 8047: https://bugs.openldap.org/show_bug.cgi?id=8047 Our issue is when the LDAP client does an SSL connect to establish the TLS session with the remote server. If the SERVER_HELLO returned from the remote server takes a significant amount of time or does not come back from the server at all (for example, someone unplugged the server), the LDAP client connection DOES NOT timeout, and there are no LDAP configuration options to force the session to timeout. So, the LDAP client connection is effectively hung forever. Issue 8047 reported the SSL timeout issue, but the issue's status is still UNCONFIRMED. Are there any plans to correct this problem in future versions of LDAP Client? Thanks, Rob Dunn IBM z/TPFDF development email: strmbrgr(a)us.ibm.com<mailto:strmbrgr@us.ibm.com> phone: (845) 433-1312

2 weeks

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DIT changes approval

by sysadm+ldap-technical＠rolep.work

Hello, Is there any way to approve (past or future) DIT changes by more than one people? OpeLDAP has ACL sets, I know. But I don't understand, how (or even can I) to use it forr approve changes in (part of) DIT by two or more people (must not singly, but whole set of people).

2 weeks

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SASL EXTERNAL

by thomaswilliampritchard＠gmail.com

I understand SASL is a framework defined outside of OpenLDAP and the EXTERNAL mechanism of SASL implies authentication is established outside of the SASL mechanism using context around the client connection. It sounds like that could be something like the Client IP, the DN in the client certificate if using mutual TLS, or the gid / uid of the client when connecting over unix sockets. I am looking for a way to audit that my SASL EXTERNAL configuration does not allow any sort of authentication through anything other than the unix socket option. I have not come across a way that I can configure the external mechanism with only uid / gid methodology. Is it sufficient to simply audit the ACLs and see that there is only an ACL for the unix socket mechanism to be confident the server is not entertaining IP / TLS / or some other EXTERNAL methodology?

2 weeks

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OpenLDAP: slapd 2.4.59 | Too Many Open files

by chauhan.ramraj＠gmail.com

Hi All Requesting some sort of help with "Too Many open files". .I have seen several post and even in these archives about too many open files..Details about openldap installation. Version - 2.4.59 OS- RockyLinux 8 Ldap is used by the coldfusion application for authentication. During normal operation things are ok..but after some time or when a load of like 30 concurrent users for a period of 5 mins are added, I get "Too Many Open files" after the file descriptors reach 1024. What I have observed that post the search result log. , the UNBIND and CLOSE on the connection at times takes over 3 mins..and have see that there are over 1000 connections in ESTABLISHED mode based on the lsof -i :ldap ...I have tried to set below limits but to no avail..it still thows error post 1023 open FDs.. * hard nofile 65535 * soft nofile 65535 * hard memlock 3000000 * soft memlock 3000000 * hard nproc 16000 * soft nproc 16000 * hard stack 512000 * soft stack 512000 Have been able to increase the FDs as well by modifiying the slapd startup script(changed the settings to 4096..it did reflect in monitor)..but after some time the connection unbind and close calls are invoke more than 3 mins...as compared to when the load is low..when it happens within few secs.. Any help to make changes to ldap configuration or pointers how to go ahead troubleshooting this would be really appreciated.

2 weeks, 4 days

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Two mdb_env_open() on same file/dir? Etc.

by Sam Dave

Can two or more mdb_env_open() be called on the same file/directory (in same program or multiple programs)? Can two or more mdb_dbi_open() be called to open ultimately the same database? What are some ramifications of doing so (and of course working with various readonly/readwrite transactions, etc.) I don't see much written about this in documentation. - Samuel

2 weeks, 5 days

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OpenLDAP - CLDAP and SASL

by Simon Pichugin

Hi folks, I am currently experiencing an issue with IPA Server set up on Fedora 36, using ipa-adtrust-install, and I'm unsure if this is due to a bug or misconfiguration on my part. Here's what I've done: I ran the following ldapsearch command: ldapsearch -LL -H cldap://server.example.com -b '' -s base 'dc=example,dc=com' "(&(DnsDomain='dc=example,dc=com')(NtVer=\x06\x00\x00\x00)(AAC=\x00\x00\x00\x00))" On OpenLDAP 2.4.46, it was working fine, and it gave an output. But OpenLDAP 2.6.2 and 2.6.4 fails with No such object (32) error. I used gdb to investigate and found that the error occurred here: https://git.openldap.org/openldap/openldap/-/blob/master/clients/tools/co... It executes ldap_sasl_interactive_bind, but it exits right in the beginning: https://git.openldap.org/openldap/openldap/-/blob/master/libraries/liblda... So back at: https://git.openldap.org/openldap/openldap/-/blob/master/clients/tools/co... It exists the do-while loop right away and leaves with no result. I'm wondering if I missed something or if there was an oversight in the implementation of this RFC, specifically regarding the CLDAP case: https://git.openldap.org/openldap/openldap/-/commit/2ae62e86bc8ffab713fc4... Looking forward to your thoughts! Best Regards, Simon

2 weeks, 6 days

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openldap-technical May 2023