openldap-technical

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4 participants
9973 discussions

Adding to the schema
by Eric Fetzer 07 Mar '23

07 Mar '23

Hi All, I need to add to my schema on my freshly built server. I found a schema that meets my needs @ https://opensource.apple.com/source/OpenLDAP/OpenLDAP-143/OpenLDAP/servers/…. My problem is that it doesn't seem to include a "ppolicy.ldif" file. The only way I know how to add to the schema is with an include statement in slapd.ldif. What am I missing? Thanks, Eric

2 2

issues with disabling filtered searches for memberURL groups
by Kartik Subbarao 07 Mar '23

07 Mar '23

One of the changes from 2.4 to 2.5 is that dynlist groups are now returned with (member=memberDN) searches. This is potentially appealing, but even with the ITS#9929 performance improvements, given the number of dynlist groups we have, search times are significantly impacted. We'd like to be able to cleanly disable this feature and exclude dynlist groups from (member=memberDN) filter consideration. The only way I've found so far is to patch the dynlist code itself. What I'm currently doing is adding a continue statement right above this line in dynlist_search(): https://git.openldap.org/openldap/openldap/-/blob/OPENLDAP_REL_ENG_2_5_14/s… That way the member searches are excluded, but dynlists otherwise work as expected. Here is the dynlist config we're using, just basic support for groupOfURLs/memberURL: overlay dynlist dynlist-attrset groupOfURLs memberURL member Is there some way to achieve my goal without having to patch the code? Or should I open an ITS feature request to add a configurable option to exclude dynlists from member searches? Thanks, -Kartik

1 0

olcAccess don't working
by bourguijl＠gmail.com 06 Mar '23

06 Mar '23

Dears, I've configured a META ldap instance pointing to a LDAP backend. In this backend, there are a few ACLs but which ones don't restrict ldapsearch that I do from the META frontend. I just have an issue when I set some ACLs on the META frontend and more specially when I insert attrs=xxx in the ACL. Here is my ACL = OK olcAccess : {0}to dn.one="ou=staff,o=mobistar.be" by dn="uid=a0621004,ou=ObeExternalITOnGcp,ou=partners,o=mobistar.be" read NOT OK olcAccess : {0}to dn.one="ou=staff,o=mobistar.be" attrs=uid by dn="uid=a0621004,ou=ObeExternalITOnGcp,ou=partners,o=mobistar.be" read Can you explain why when I restrict to an attribute, my ldapsearch didn't provide me any response as expected ? Thx in advance, J-L.

2 1

olcDbIDAssertBind
by bourguijl＠gmail.com 06 Mar '23

06 Mar '23

Dears, I've used olcDbIDAssertBind in a META ldap config to use another login/password to search in backend but it's not taken into account, that's still the client user that's used to fetch data in the backend. Is it he correct parameter to use in order to "supersede" the client user by another one (generic) known by the backend ? Thx for help. Brgds, Jean-Luc.

1 0

Please help to check the right schema.
by luckydog xf 02 Mar '23

02 Mar '23

Hi, list, I'm trying to migrate opendj to openLDAP. Here is a customized schema. === dn: cn=schema objectclass: top objectclass: ldapSubentry objectclass: subschema cn: schema attributeTypes: ( 1.12.23.34.45.56.780 NAME 'active' SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 X-SCHEMA-FILE '99-user.ldif' ) attributeTypes: ( 1.12.23.34.45.56.782 NAME 'accountName' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-SCHEMA-FILE '99-user.ldif' ) attributeTypes: ( 1.12.23.34.45.56.784 NAME 'djGroups' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-SCHEMA-FILE '99-user.ldif' ) attributeTypes: ( 1.12.23.34.45.56.786 NAME 'departmentId' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-SCHEMA-FILE '99-user.ldif' ) attributeTypes: ( 1.12.23.34.45.56.788 NAME 'department' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-SCHEMA-FILE '99-user.ldif' ) attributeTypes: ( 1.12.23.34.45.56.790 NAME 'companyCode' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-SCHEMA-FILE '99-user.ldif' ) attributeTypes: ( 1.12.23.34.45.56.792 NAME 'parent' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-SCHEMA-FILE '99-user.ldif' ) ds-sync-generation-id: 8408 ds-sync-state: 01050186432c61a90000f9ca10880 ds-sync-state: 0105017a002b3170002f4a1b16311 modifiersName: cn=Administrator modifyTimestamp: 20190711063414Z objectClasses: ( 1.12.23.34.45.56.880 NAME 'idmExt' DESC 'idm user extended attributes' SUP top AUXILIARY MUST active MAY ( accountName $ djGroups $ departmentId $ department $ companyCode ) X-SCHEMA-FILE '99-user.ldif' ) objectClasses: ( 1.12.23.34.45.56.890 NAME 'idmDept' DESC 'idm department extended attributes' SUP top AUXILIARY MAY parent X-SCHEMA-FILE '99-user.ldif' ) === I changed it to LDAP compliant one. --- dn: cn=djuser,cn=schema,cn=config objectClass: olcSchemaConfig cn: djuser olcAttributeTypes: ( 1.12.23.34.45.56.780 NAME 'active' SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 ) olcAttributeTypes: ( 1.12.23.34.45.56.782 NAME 'accountName' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) olcAttributeTypes: ( 1.12.23.34.45.56.784 NAME 'djGroups' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) olcAttributeTypes: ( 1.12.23.34.45.56.786 NAME 'departmentId' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) olcAttributeTypes: ( 1.12.23.34.45.56.788 NAME 'department' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) olcAttributeTypes: ( 1.12.23.34.45.56.790 NAME 'companyCode' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) olcAttributeTypes: ( 1.12.23.34.45.56.792 NAME 'parent' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) olcObjectClasses: ( 1.12.23.34.45.56.880 NAME 'idmExt' DESC 'idm user extended attributes' SUP top AUXILIARY MUST active MAY ( accountName $ djGroups $ departmentId $ department $ companyCode ) ) olcObjectClasses: ( 1.12.23.34.45.56.890 NAME 'idmDept' DESC 'idm department extended attributes' SUP top AUXILIARY MAY parent ) ----- It can be imported by `ldapadd -Y EXTERNAL -H ldapi:/// -f 99-user.ldif` However, there is nothing in === [root@hq-repo cn=config]# more cn\=schema/cn\=\{10\}djuser.ldif # AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify. # CRC32 310b21fa dn: cn={10}djuser objectClass: olcSchemaConfig cn: {10}djuser structuralObjectClass: olcSchemaConfig entryUUID: 6b852150-4b97-103d-86fe-7b79b4eef873 creatorsName: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth createTimestamp: 20230228093837Z entryCSN: 20230228093837.038174Z#000000#000#000000 modifiersName: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth modifyTimestamp: 20230228093837Z === I'm using openldap 2.4. Anything wrong with my schema ? Thanks.

2 3

dynlist few question (memberof replacement, reverse searches)
by Michal Soltys 02 Mar '23

02 Mar '23

Hi, Few questions regarding dynlist as a replacement of memberof overlay. Version: 2.5.13+dfsg-2~bpo11+1 on debian bullseye 1) in relatively simple environment (2 servers, multiprovider, syncrepl and keepalived) we've been using memberof overlay - with memberOf explicitly filtered out in syncrepl configuration (exattrs=memberOf). This has been working fine so far across many versions - but considering the warning in slapo-memberof manpage is this overlay used in this fashion safe or are there other issues that eventually might show up ? 2) I've been experimenting a bit with dynlist as a replacement; judging from examples/manual it seems it was primarily created to populate a dynamic group while doing the search over users under a constraint of a filter; but it seems it's working just fine in reverse way as well, e.g. consider: dynlist config: olcDynListAttrSet = toukPerson labeledURI dgMemberOf group with manually added members: cn=ADM,ou=TouK,ou=Group,dc=touk,dc=pl a user: uniqueMember=cn=Michał Sołtys,ou=Touki,ou=People,dc=touk,dc=pl and relevant attributes in user's entry: objectClass = toukPerson labeledURI = ldap:///ou=TouK,ou=Group,dc=touk,dc=pl??sub?(uniqueMember=cn=Michał Sołtys,ou=Touki,ou=People,dc=touk,dc=pl) This seems to be doing what we are expecting - populating dynamically dgMemberOf with the groups the user has membership in. While this is working, is it ok to use this overlay in this fashion (search over groups instead of over users) ? 3) my last question is more of a curiosity - what case scenario are for additional [+<memberOf-ad>[@<static-oc>[*]]] attributes ? No matter what I tried in what way, neither +memberOf-ad nor +static-oc had any effect whatsoever.

1 1

ch_malloc of 0 bytes failed on Meta backend
by sumanbadra＠gmail.com 01 Mar '23

01 Mar '23

Hi, We have been using Meta backend with multiple AD domain controllers as targets. OpenLDAP version is 2.4.56 and installed on RHEL 8.6 Azure hosted servers. We have two such nodes with the same setup. I have been trying to find the root cause for the error "ch_malloc of 0 bytes failed on Meta backend" found on the two servers. Service was crashed on both servers after this error. After starting the OpenLDAP service, it has been working fine so far. My observations so far: - Our Azure team did not find any abnormalities on the servers w.r.t the memory utilisation by LDAP during the incident. - Stats around the time when issue occurred sar -r kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 01:50:01 PM 25202860 29022816 7519888 22.98 13808 5385664 4736872 14.48 2349572 4157132 64 02:00:01 PM 25195656 29018052 7527092 23.00 13808 5388120 4767748 14.57 2349572 4163232 44 02:10:00 PM 25197340 29010572 7525408 23.00 13808 5386752 4783920 14.62 2352524 4158856 3336 02:20:01 PM 25201220 29016192 7521528 22.99 13808 5388296 4789868 14.64 2352516 4154632 52 02:30:01 PM 25196500 29013836 7526248 23.00 13808 5390708 4789412 14.64 2352516 4159140 36 02:40:01 PM 25181840 29002912 7540908 23.04 13808 5402364 4782228 14.61 2352528 4173032 144 02:50:01 PM 25170748 28994608 7552000 23.08 13808 5413236 4758840 14.54 2352516 4185172 1092 03:00:01 PM 25172224 28997852 7550524 23.07 13808 5414920 4729152 14.45 2352520 4182356 48 03:10:01 PM 24976028 28806984 7746720 23.67 13808 5428036 5007976 15.30 2353012 4375608 4940 - We did not set any cache specifically as meta does not store any data - Error shows 0 bytes rather than any specific number I would really appreciate if you can share any pointer which would help dig further. Thank you, Suman

2 2

lmdb partial update of existing records
by g.fanini＠gmail.com 28 Feb '23

28 Feb '23

What is the recommended way to update partial substrings of existing records in lmdb ? I could not find a way that allows to transfer not the entire record, thus wasting memory bandwidth, but only say overwrite a single byte within say a 1 mbyte record, is it acceptable/safe to modify : mdb_put(offset, partial_len) mdb_cursor_put(offset, partial_len) ... if (F_ISSET(flags, MDB_RESERVE)) data->mv_data = olddata.mv_data; else if (!(mc->mc_flags & C_SUB)) { if(!offset && !partial_len) memcpy(olddata.mv_data, data->mv_data, data->mv_size); else memcpy((char*)olddata.mv_data+offset, data->mv_data, partial_len);// allow partial update within existing record at offset } else { memcpy(NODEKEY(leaf), key->mv_data, key->mv_size); goto fix_parent; } ... further to that, is it possible to allow retrieving current record size, data with MDB_RESERVE, and what should be done if anything in case one opts not to write anything into the returned data } else if ((data->mv_size == olddata.mv_size) || F_ISSET(flags, MDB_RESERVE) )// allow retrieving current record size, data with MDB_RESERVE { /* same size, just replace it. Note that we could * also reuse this node if the new data is smaller, * but instead we opt to shrink the node in that case. */ if (F_ISSET(flags, MDB_RESERVE)) { if (!data->mv_size) *data = olddata;// allow retrieving current size, data with MDB_RESERVE by querying with size 0 else data->mv_data = olddata.mv_data; }

1 0

dynlist modul pageresult bug
by Andreas Ladanyi 28 Feb '23

28 Feb '23

Hi, is the pageresult issue of dynlist solved in the new 2.5.14 release of slapd or will it be solved in the near future ? cheers, Andi

2 1

Content Sync Refresh Required
by Geert Hendrickx 28 Feb '23

28 Feb '23

Hi We're on OpenLDAP 2.5.14, built from source on EL 8. After dropping the accesslog on an MMR master, we keep seeing on all replica's: > do_syncrep2: rid=xxx (4096) Content Sync Refresh Required and all replica's keep falling back to refresh mode every few minutes. It's strange because we do this more often (typically after batch updates, which leaves a large freelist in the accesslog upon pruning), but it's the first time we hit this issue. We stopped the master (at a time no updates are coming in), drop the accesslog, and start it again. Does it make sense to wait until this fixes itself? Or should I fix this manually somehow? I already tried mdb_copying the provider db to the replica's, but the same thing keeps happening. In the meantime replication is working very slowly... Geert

2 8

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