openldap-technical January 2022

openldap-technical@openldap.org

27 participants
33 discussions

mmr of cn=config with OpenLDAP 2.6
by Stefan Kania 10 Jan '22

10 Jan '22

Hi to all, is it now save to use mmr of cn=config with OpenLDAP 2.6? I got it running with 4 server. I'm installing all 4 server with Ansible so I created a basic configuration: ------------------ dn: cn=config objectClass: olcGlobal cn: config olcLogLevel: sync olcLogLevel: stats olcPidFile: /var/symas/run/slapd.pid olcArgsFile: /var/symas/run/slapd.args olcToolThreads: 1 olcServerID: 4 dn: cn=schema,cn=config objectClass: olcSchemaConfig cn: schema # Read all needed schema from variable in default/main.yml include: file:///opt/symas/etc/openldap/schema/core.ldif include: file:///opt/symas/etc/openldap/schema/cosine.ldif include: file:///opt/symas/etc/openldap/schema/nis.ldif include: file:///opt/symas/etc/openldap/schema/inetorgperson.ldif include: file:///opt/symas/etc/openldap/schema/dyngroup.ldif include: file:///opt/symas/etc/openldap/schema/kerberos.openldap.ldif # Read all modules from variable in default/main.yml dn: cn=module{0},cn=config objectClass: olcModuleList cn: module{0} olcModulePath: /opt/symas/lib/openldap olcModuleLoad: back_mdb olcModuleLoad: back_monitor olcModuleLoad: autoca.la olcModuleLoad: otp.la olcModuleLoad: argon2.la olcModuleLoad: syncprov olcModuleLoad: back_monitor olcModuleLoad: accesslog.la dn: olcDatabase={-1}frontend,cn=config objectClass: olcDatabaseConfig objectClass: olcFrontendConfig olcDatabase: {-1}frontend olcSizeLimit: 500 olcAccess: {0}to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage by dn.exact=gidNumber=1111+uidNumber=1111,cn=peercred,cn=external,cn=auth manage by * break olcAccess: {1}to dn="" by * read olcAccess: {2}to dn.base="cn=subschema" by * read olcPasswordHash: {ARGON2} dn: olcBackend={0}mdb,cn=config objectClass: olcBackendConfig olcBackend: {0}mdb dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcRootDN: cn=admin,cn=config olcRootPW: {ARGON2}$argon2i$v=19$m=4096,t=3,p=1$cXdlcnJ0enV6dWlvMTIz$G/l0lynf7ygdz0tG+E7S1fBibsFs/L80AUSisiGl/v4 olcAccess: {0}to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage by dn.exact=gidNumber=1111+uidNumber=1111,cn=peercred,cn=external,cn=auth manage by dn.exact=uid=ldap-admin,ou=users,dc=example,dc=net write by * break dn: olcDatabase={1}monitor,cn=config objectClass: olcDatabaseConfig olcDatabase: {1}monitor olcAccess: {0}to dn.subtree="cn=monitor" by dn.exact=cn=admin,cn=config read by dn.exact=cn=admin,dc=example,dc=net read dn: olcDatabase={2}mdb,cn=config objectClass: olcDatabaseConfig objectClass: olcmdbConfig olcDatabase: {2}mdb olcSuffix: dc=example,dc=net olcRootDN: cn=admin,dc=example,dc=net olcRootPW: {ARGON2}$argon2i$v=19$m=4096,t=3,p=1$cXdlcnJ0enV6dWlvMTIz$G/l0lynf7ygdz0tG+E7S1fBibsFs/L80AUSisiGl/v4 olcSizeLimit: unlimited olcTimeLimit: unlimited olcDbCheckpoint: 512 30 olcDbDirectory: /var/symas/openldap-data olcDbIndex: default eq olcDbIndex: objectClass olcDbIndex: entryUUID olcDbIndex: entryCSN olcDbIndex: cn pres,eq,sub olcDbIndex: uid pres,eq,sub olcDbIndex: mail pres,eq,sub olcDbIndex: sn pres,eq,sub olcDbIndex: description pres,eq,sub olcDbIndex: title pres,eq,sub olcDbIndex: givenName pres,eq,sub olcDbMaxSize: 85899345920 olcAccess: {0} to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage by dn.exact=gidNumber=1111+uidNumber=1111,cn=peercred,cn=external,cn=auth manage by dn.exact=uid=ldap-admin,ou=users,dc=example,dc=net write by dn.exact=uid=repl-user,ou=users,dc=example,dc=net read by * break olcAccess: {1}to dn.exact="" by * read olcAccess: {2}to dn.base="cn=subschema" by * read olcAccess: {3} to attrs=userPassword by anonymous auth by self write by * none olcLimits: {0} dn.exact="uid=repl-user,ou=users,dc=example,dc=net" time=unlimited size=unlimited olcLimits: {1} dn.exact="uid=ldap-admin,ou=users,dc=example,dc=net" time=unlimited size=unlimited ------------------ The "ServerID" is different for every server, every thing else is identical. Then I created a file to change the serverID: ------------------ dn: cn=config changetype: modify replace: olcServerID olcServerID: 1 ldap://ldap01.example.net olcServerID: 2 ldap://ldap02.example.net olcServerID: 3 ldap://ldap03.example.net olcServerID: 4 ldap://ldap04.example.net ------------------ and a file to configure the replication: ------------------ dn: olcOverlay=syncprov,olcDatabase={0}config,cn=config changetype: add objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: syncprov dn: olcDatabase={0}config,cn=config changetype: modify replace: olcSyncRepl olcSyncRepl: rid=1 provider=ldap://ldap01.example.net binddn="cn=admin,cn=config" bindmethod=simple credentials=secret searchbase="cn=config" type=refreshAndPersist retry="5 5 300 20" timeout=1 starttls=yes olcSyncRepl: rid=2 provider=ldap://ldap02.example.net binddn="cn=admin,cn=config" bindmethod=simple credentials=secret searchbase="cn=config" type=refreshAndPersist retry="5 5 300 20" timeout=1 starttls=yes olcSyncRepl: rid=3 provider=ldap://ldap03.example.net binddn="cn=admin,cn=config" bindmethod=simple credentials=secret searchbase="cn=config" type=refreshAndPersist retry="5 5 300 20" timeout=1 starttls=yes olcSyncRepl: rid=4 provider=ldap://ldap04.example.net binddn="cn=admin,cn=config" bindmethod=simple credentials=secret searchbase="cn=config" type=refreshAndPersist retry="5 5 300 20" timeout=1 starttls=yes - add: olcMirrorMode olcMirrorMode: TRUE ------------------ When I configure the server via Ansible (everything in one playbook) the replication of cn=config is not working. When I only do the basic configuration via Ansible and then add the change of serverID and then the replication of cn=config step by step on every single server: ------------- ldapmodify -Y EXTERNAL -H ldapi:/// -f serverid.ldif ldapmodify -Y EXTERNAL -H ldapi:/// -f repl_config.ldif ------------- everything is fine. The two files "serverid.ldif" and "repl_config.ldif" are the files Ansible created, so the content of the file is the same. Can it be, that the problem is because Ansible first sets all the ServerIDs on all servers and then configure the replication of cn=config on all servers? For setting up the configuration I took: https://www.openldap.org/devel/admin/replication.html Starting at 18.3.3 What I don't understand: Do I realy have to put all Servers in the replication, even the server it self? So do I realy have to add on Server-01, the Server "server-01, server-02, server-03 ,server-04" to the replication? Dosn't it mean that server-01 is replicating to it self? If it's correct, can someone explain why? O did I understud something wrong on the webpage? Stefan

3 12

Help on building and configuring openLdap V2.6.0
by Stampfl, Burt 06 Jan '22

06 Jan '22

Hi, I'm new to OpenLDAP. Pulled down the current 2.6 release to a Debian target and am having trouble figuring out how to build the backend modules for dynamic use. What I did: 1. Downloaded openldap-2.6.0.tgz and extracted the source on my Debian target. 2. configured the 'build' via (output indicated it was successful) : ./configure --enable-sql=no --enable-wt=no --enable-spasswd=yes --enable-passwd=yes --enable-perl=yes --enable-crypt=yes --enable-ldap=yes --enable-slapd=yes --enable-ppolicy=yes --enable-otp=yes --enable-auditlog=yes --enable-modules=yes --with-cyrus-sasl=yes 3. ran 'make depend' (output indicated it was successful). 4. ran 'make' (output indicated it was successful). 5. ran the tests via 'env SLAPD_DEBUG=1 make test' (output indicated it was successful). 6. Installed it via 'su root -c 'make install' I was able to pretty easily get the slapd server running, create a database (mdb) add users, etc, and access via a remote client. Once I was able to do that I wanted to enable the ppolicy backend/overlay and have not been able to get this to work. Looking online it appears I need some 'backend' modules like back-mdb.la, ppolicy.la, etc and I cannot find them anywhere in my build tree. I had thought the --enable-xxx directives I used in the config step would have forced this to build them, but I guess not. How do I create these dynamic backend modules and is there any documentation on how to use them in the newer dynamic configuration schema ? I've attached a file with the output from the steps I performed above. Thank you Burt Burt Stampfl AMSC (NASDAQ: AMSC) W231 N2844 Roundy Circle Suite D, Pewaukee, WI 53072 USA Work: +1 262.901.6007 Mobile: +1 847.638.1792 burt.stampfl(a)amsc.com<mailto:burt.stampfl@amsc.com> amsc.com<http://www.amsc.com/> [Description: Description: cid:image001.jpg@01CC890F.E40B1CB0] "This e-mail message and any attachments are confidential and may be privileged. If you are not the intended recipient please notify AMSC immediately by replying to this message or by sending a message to postmaster(a)amsc.com and destroy all copies of this message and any attachments. Thank you."

2 1

Error with slapadd & syncrepl ldif file
by David White 06 Jan '22

06 Jan '22

At last, I'm trying to setup a consumer to replicate data off of a primary ldap server running the Symas-provided v2.6 packages on Ubuntu 20.04. The following links were very helpful to me: https://openldap-software.0penldap.narkive.com/VEt6vIEI/syncrepl-ldif-kicks… https://www.openldap.org/pub/hyc/LDAPcon2007s.pdf I have built an ldif file that I'm trying to slapadd. But when the binddn contains anything other than "cn" attributes, slapadd produces an error. My Question: Why can I not use a binddn that contains anything other than "cn" attributes, like "uid", "dc", or "ou"? Specific details with debug below: The following works perfectly fine: root@ldapconsumer:/opt/symas/etc/openldap# /opt/symas/sbin/slapadd -l /home/myself/ldap/consumer_sync.ldif -F /opt/symas/etc/openldap/slapd.d/ -w -n0 Closing DB.. root@ldapconsumer:/opt/symas/etc/openldap# cat /home/myself/ldap/consumer_sync.ldif dn: cn=config objectClass: olcGlobal cn: config dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcRootDN: cn=admin,cn=config olcRootPW: secret olcSyncRepl: rid=001 provider=ldap://172.16.2.5 binddn="cn=admin,cn=example,cn=com" bindmethod=simple credentials=secret searchbase="cn=config" type=refreshOnly interval=00:00:00:10 retry="5 5 300 5" Alternatively, this works as the binddn: cn=ldap.sync,cn=example,cn=com But the following values in the binddn do NOT work: - binddn=cn=ldap.sync,dc=example,dc=com - binddn=uid=sync,ou=People,dc=example,dc=com In either of the examples above that do NOT work, I'm getting an "invalid bind config value" error message. See below for full stdout with 1 example: root@ldapconsumer:/opt/symas/etc/openldap# /opt/symas/sbin/slapadd -l /home/myself/ldap/consumer_sync.ldif -F /opt/symas/etc/openldap/slapd.d/ -w -n0 invalid bind config value binddn=uid=ldap.sync,ou=People,dc=example,dc=com olcSyncrepl: value #0: Error: parse_syncrepl_line: unable to parse "binddn=uid=ldap.sync,ou=People,dc=example,dc=com" . failed to add syncinfo slapadd: could not add entry dn="olcDatabase={0}config,cn=config" (line=5): Error: parse_syncrepl_line: unable to parse "binddn=uid=ldap.sync,ou=People,dc=example,dc=com" Closing DB... If I run this with debug enabled, below is what I see (not sure if this will be helpful or not, but am providing it just in case). Password has been redacted of course. root@ldapconsumer:/opt/symas/etc/openldap# /opt/symas/sbin/slapadd -l /home/myself/ldap/consumer_sync.ldif -F /opt/symas/etc/openldap/slapd.d/ -w -n0 -d -1 slapadd init: initiated tool. slap_sasl_init: initialized! backend_startup_one: starting "cn=config" ldif_read_file: no entry file "/opt/symas/etc/openldap/slapd.d//cn=config.ldif" send_ldap_result: conn=-1 op=0 p=0 send_ldap_result: err=32 matched="" text="" >>> dnNormalize: <cn=Subschema> <<< dnNormalize: <cn=subschema> matching_rule_use_init {snip} slapadd startup: initiated. backend_startup_one: starting "cn=config" config_back_db_open Backend ACL: access to * by * none config_back_db_open: line 0: warning: cannot assess the validity of the ACL scope within backend naming context config_back_db_open: No explicit ACL for back-config configured. Using hardcoded default => str2entry: "dn: cn=config objectClass: olcGlobal cn: config " >>> dnPrettyNormal: <cn=config> <<< dnPrettyNormal: <cn=config>, <cn=config> <= str2entry(cn=config) -> 0x5574eedc21b8 oc_check_required entry (cn=config), objectClass "olcGlobal" oc_check_allowed type "objectClass" oc_check_allowed type "cn" oc_check_allowed type "structuralObjectClass" ldif_write_entry: wrote entry "cn=config" => str2entry: "dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcRootDN: cn=admin,cn=config olcRootPW: secret olcSyncRepl: rid=001 provider=ldap://172.16.2.5 binddn="uid=ldap.sync,ou=People,dc=example,dc=com" bindmethod=simple credentials=secret searchbase="cn=config" type=refreshOnly interval=00:00:00:10 retry="5 5 300 5"" >>> dnPrettyNormal: <olcDatabase={0}config,cn=config> <<< dnPrettyNormal: <olcDatabase={0}config,cn=config>, <olcDatabase={0}config,cn=config> >>> dnNormalize: <cn=admin,cn=config> <<< dnNormalize: <cn=admin,cn=config> <= str2entry(olcDatabase={0}config,cn=config) -> 0x5574eedc2258 oc_check_required entry (olcDatabase={0}config,cn=config), objectClass "olcDatabaseConfig" oc_check_allowed type "objectClass" oc_check_allowed type "olcDatabase" oc_check_allowed type "olcRootDN" oc_check_allowed type "olcRootPW" oc_check_allowed type "olcSyncrepl" oc_check_allowed type "structuralObjectClass" config_build_entry: "olcDatabase={-1}frontend" slap_get_csn: conn=-1 op=0 generated new csn=20220106202401.439197Z#000000#000#000000 manage=0 ldif_read_file: read entry file: "/opt/symas/etc/openldap/slapd.d//cn=config.ldif" => str2entry: "# AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify. # CRC32 fd732ca0 dn: cn=config objectClass: olcGlobal cn: config structuralObjectClass: olcGlobalentryUUID: 54643148-037a-103c-8b74-e78e18fa89a5 creatorsName: cn=config createTimestamp: 20220106202401Z entryCSN: 20220106202401.438467Z#000000#000#000000 modifiersName: cn=config modifyTimestamp: 20220106202401Z " >>> dnPrettyNormal: <cn=config> <<< dnPrettyNormal: <cn=config>, <cn=config> >>> dnNormalize: <cn=config> <<< dnNormalize: <cn=config> >>> dnNormalize: <cn=config> <<< dnNormalize: <cn=config> <= str2entry(cn=config) -> 0x5574eedc22f8 ldif_write_entry: wrote entry "olcDatabase={-1}frontend,cn=config" >>> dnPrettyNormal: <cn=admin,cn=config> <<< dnPrettyNormal: <cn=admin,cn=config>, <cn=admin,cn=config> >>> dnPrettyNormal: <cn=admin,cn=config> <<< dnPrettyNormal: <cn=admin,cn=config>, <cn=admin,cn=config> >>> dnNormalize: <uid=ldap.sync,ou=People,dc=example,dc=com> invalid bind config value binddn=uid=ldap.sync,ou=People,dc=example,dc=com olcSyncrepl: value #0: Error: parse_syncrepl_line: unable to parse "binddn=uid=ldap.sync,ou=People,dc=example,dc=com" . failed to add syncinfo syncinfo_free: rid=001 slapadd: could not add entry dn="olcDatabase={0}config,cn=config" (line=5): Error: parse_syncrepl_line: unable to parse "binddn=uid=ldap.sync,ou=People,dc=example,dc=com" slapadd shutdown: initiatedslapadd destroy: freeing system resources. 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1 0

OpenLDAP's UB minefield
by openldap-technical＠kolttonen.fi 06 Jan '22

06 Jan '22

Someone recently wrote on openldap-bugs: > The kernel recently got bitten using the same pattern of unaligned > short pointers through casts. GCC produced code which corrupted > initramfs during unpacking. > > See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100363. > OpenLDAP should fix that code. Correct. That's what I said long time ago, too. I wonder if OpenLDAP projects' delusions about Undefined Behaviour "not being a bug" still persist, or are they perhaps going to fix their buggy code? What a minefield to walk on, it can blow up anytime. I am very happy to not have to administer this server code anymore, but I sure am scared for those who do. best regards, Unto Sten

2 1

slapcat & cn=config database
by David White 06 Jan '22

06 Jan '22

I'm starting a new thread on a different topic, as my current issue is veering way off topic from my original thread (c/f https://lists.openldap.org/hyperkitty/list/openldap-technical@openldap.org/… and c/f https://lists.openldap.org/hyperkitty/list/openldap-technical@openldap.org/…). Thanks to Ulrich's suggestion to run slapcat -n0 with debug (-d -1). That did indeed get me some more information, but I still cannot pinpoint why slapcat keeps telling me that it "could not open database". To recap: I'm currently running the Symas-provided openldap package v2.6, and my ultimate goal is to build a push-based proxy with syncrepl. But this thread is about the cn=config database. As part of my troubleshooting, I found this quite old thread about the different ways to start slapd: https://openldap-technical.openldap.narkive.com/Y1yq9Qd1/can-not-modify-cn-… I stopped slapd with: systemctl stop slapd I then manually started it like so, in order to force it to use the ldif directory instead of the slapd.conf file: /opt/symas/lib/slapd -F /var/symas/openldap-data/slapd.d/ This started right up, and I can confirm slapd is running. I'm able to run a ldapsearch against: -b "cn=config" like so, where we see all of the various databases, frontend, and Overlays configured. I have redacted the password, and changed the domain to "example" in the following stdout. Given this information, I'm still very confused why slapcat can't open the cn=config database for its own processing. Any help on this would be appreciated. root@ldap-provider:~# ldapsearch -x -LLL -D cn=config -W -s sub -b "cn=config" "(olcDatabase=*)" '*' '+' -v ldap_initialize( <DEFAULT> ) Enter LDAP Password: filter: (olcDatabase=*) requesting: * + dn: olcDatabase={-1}frontend,cn=config objectClass: olcDatabaseConfig objectClass: olcFrontendConfig olcDatabase: {-1}frontend olcAddContentAcl: FALSE olcLastMod: TRUE olcLastBind: TRUE olcLastBindPrecision: 0 olcMaxDerefDepth: 0 olcReadOnly: FALSE olcSchemaDN: cn=Subschema olcSyncUseSubentry: FALSE olcMonitoring: FALSE structuralObjectClass: olcDatabaseConfig entryUUID: 047a4d82-01dd-103c-8345-d3830b8ac76f creatorsName: cn=config createTimestamp: 20220104190525Z entryCSN: 20220104190525.214003Z#000000#000#000000 modifiersName: cn=config modifyTimestamp: 20220104190525Z entryDN: olcDatabase={-1}frontend,cn=config subschemaSubentry: cn=Subschema dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcAccess: {0}to * by * none olcAddContentAcl: TRUE olcLastMod: TRUE olcLastBind: TRUE olcLastBindPrecision: 0 olcMaxDerefDepth: 15 olcReadOnly: FALSE olcRootDN: cn=config olcRootPW: secret olcSyncUseSubentry: FALSE olcMonitoring: FALSE structuralObjectClass: olcDatabaseConfig entryUUID: 047a4fda-01dd-103c-8346-d3830b8ac76f creatorsName: cn=config createTimestamp: 20220104190525Z entryCSN: 20220104190525.214003Z#000000#000#000000 modifiersName: cn=config modifyTimestamp: 20220104190525Z entryDN: olcDatabase={0}config,cn=config subschemaSubentry: cn=Subschema dn: olcDatabase={1}mdb,cn=config objectClass: olcDatabaseConfig objectClass: olcMdbConfig olcDatabase: {1}mdb olcDbDirectory: /var/symas/openldap-data olcSuffix: dc=example,dc=com olcAddContentAcl: FALSE olcLastMod: TRUE olcLastBind: TRUE olcLastBindPrecision: 0 olcMaxDerefDepth: 15 olcReadOnly: FALSE olcRootDN: cn=admin,dc=example,dc=com olcRootPW: secret olcSyncUseSubentry: FALSE olcMonitoring: TRUE olcDbNoSync: FALSE olcDbIndex: objectClass eq olcDbIndex: entryUUID eq olcDbIndex: entryCSN eq olcDbMaxReaders: 0 olcDbMaxSize: 10485760 olcDbMode: 0600 olcDbSearchStack: 16 olcDbMaxEntrySize: 0 olcDbRtxnSize: 10000 structuralObjectClass: olcMdbConfig entryUUID: 047a52be-01dd-103c-8347-d3830b8ac76f creatorsName: cn=config createTimestamp: 20220104190525Z entryCSN: 20220104190525.214003Z#000000#000#000000 modifiersName: cn=config modifyTimestamp: 20220104190525Z entryDN: olcDatabase={1}mdb,cn=config subschemaSubentry: cn=Subschema dn: olcOverlay={0}syncprov,olcDatabase={1}mdb,cn=config objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {0}syncprov olcSpCheckpoint: 100 10 olcSpSessionlog: 100 structuralObjectClass: olcSyncProvConfig entryUUID: 047a54da-01dd-103c-8348-d3830b8ac76f creatorsName: cn=config createTimestamp: 20220104190525Z entryCSN: 20220104190525.214003Z#000000#000#000000 modifiersName: cn=config modifyTimestamp: 20220104190525Z entryDN: olcOverlay={0}syncprov,olcDatabase={1}mdb,cn=config subschemaSubentry: cn=Subschema Sent with ProtonMail Secure Email. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Wednesday, January 5th, 2022 at 9:40 AM, Ulrich Windl <Ulrich.Windl(a)rz.uni-regensburg.de> wrote: > Hi! > > I meant: The debug output is useless when you leave out "-n0" (the case that > > doesn't work for you). > > > > > David White dmwhite823(a)protonmail.com schrieb am 05.01.2022 um 15:14 in > > Nachricht > > > > qn5VCvnElSb0fkpWltSUlY7hWAU=(a)protonmail.com>: > > > That's the thing. > > > > -n0 always returns "unknown database". > > > > Only -n1 returns data. > > > > Thanks for the suggestion, though. :) > > > > Sent with ProtonMail Secure Email. > > > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > > > On Wednesday, January 5th, 2022 at 8:11 AM, Ulrich Windl > > > > Ulrich.Windl(a)rz.uni-regensburg.de wrote: > > > > > It seems you missed "-n0" for slapcat. > >

3 5

Guide to setup syncrepl with proxy-based push config
by David White 05 Jan '22

05 Jan '22

Hello, I have some basic experience interacting with & troubleshooting OpenLDAP as well as 389-ds, but I don't have a whole lot of experience setting them up or configuring an OpenLDAP server. My goal is to setup replication from a Primary inside a trusted network outwards to a Replica that is in an untrusted network, without allowing the replica any direct access to the primary, due to firewall flows and network requirements. This is true even for the initial connection, so a simple RefreshAndPersist configuration won't work. I have read that it is possible to setup a push-based replication using a proxy, such that: - The proxy gets installed as a "hidden" database onto the same server as the primary - The proxy sets up replication with the primary using RefreshAndPersist - The proxy is then able to push the data out of the replica I have skimmed over, and re-read, a lot of portions from this document: https://www.openldap.org/doc/admin24/replication.html I have also followed this basic guide to setup a Primary with replication capability: https://ubuntu.com/server/docs/service-ldap-replication What I'm having trouble with, is finding a useful guide that will walk me through the process to setup and configure the proxy as I've described above. Questions: - Based on my requirements above, will the proxy with syncrepl meet my needs? - If I put the proxy onto the same server as the primary, then due to firewall flows, the replica will not have any access to the primary. All communication will need to be initiated outbound - If I put the proxy into the same network as the replica, well.... that won't work either, for the same reason - The following URL from the OpenLDAP docs provides some example configs: https://www.openldap.org/doc/admin24/replication.html#Syncrepl%20Proxy - If I'm reading everything correctly, though, the "new" / "accepted" / "preferred" way to configure the ldap server is to use the `ldapadd`, `ldapmodify`, and related commands. My confusion and question here is.... should I try to configure all of this by editing the old slapd.conf file as the openldap.org docs provide examples, or is there a way to do this using the ldapmodify & related commands? - If I can / should do this from the command line... are there any guides or tutorials that will take me step-by-step through the process as I try to build this in a lab environment? Thanks in advance, David Sent with ProtonMail Secure Email.

4 15

Re: [EXT] Re: openldap ppolicy pwdAccountLockedTime
by kevin martin 03 Jan '22

03 Jan '22

Hmm, module loaded. I'm not doing a moduleload of anything ppolicy related, simply setting the overlay ppolicy, the ppolicy_default, and ppolicy_use_lockout. What's the module to load as I don't find a ppolicy la file after compiling? Can you point me to a doc that explains the proper way to use this now? On Mon, Jan 3, 2022, 10:41 AM Quanah Gibson-Mount <quanah(a)symas.com> wrote: > > > --On Monday, January 3, 2022 9:39 AM -0600 kevin martin <ktmdms(a)gmail.com> > > wrote: > > > > > In 2.4 I was still pulling in the schema. In 2.5 ppolicy is compiled as > > part of the code. Assuming it just works, how does one go about setting > > pwdAccountLockedTime for a user then? I can't add it as an attribute of > > the user so I'm not sure how it can be set. > > If it has been moduleloaded into the slapd process, the ppolicy schema is > known to slapd and available for use. If you are finding the attribute to > not be defined it would suggest you've failed to load the module as > required. I would note that you want to ensure you're running 2.5.8 or > later (See ITS#9671). > > --Quanah > > > -- > > Quanah Gibson-Mount > Product Architect > Symas Corporation > Packaged, certified, and supported LDAP solutions powered by OpenLDAP: > <http://www.symas.com> >

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dynamic groups seach for memberUID openldap 2.6
by Stefan Kania 03 Jan '22

03 Jan '22

Hi to all, two years ago I tried to use dynamic groups as Posix-groups see post: https://www.openldap.net/lists/openldap-technical/201911/msg00028.html Now I tried it again with OpenLDAP 2.6 and the attribute memberUID is still not showing up. Is it still not possible to search for memberUid? @Quanah You wrote: There's work to change this behavior (See ITS#9121) for OpenLDAP 2.5. Is the work on it still in progress? Stefan

3 6

A very simple olcAccess rule doesn't work
by Volodymyr Melnyk 03 Jan '22

03 Jan '22

Dear colleagues, There's a question I posted on ServerFault (https://serverfault.com/questions/1088252/a-very-simple-olcaccess-rule-does…), but it seems that asking my question in this mailing list would be a better idea/ So, long story short, I have a domain (let's call it `dc=example,dc=org`) . The domain has a branch (`ou=users,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org`). There's a simpleSecurityObject in this domain (`uid=admin,ou=managers,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org`). I need the uid=admin,*** user to have full (manage) access to the ou=users,*** branch, so I added the following olcAccess record: `to dn.subtree="ou=users,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org" by dn.exact="uid=admin,ou=managers,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org"`. It has added to the default set of rules: ``` dn: olcDatabase={1}mdb,cn=config olcAccess: {0}to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external ,cn=auth manage by * break olcAccess: {1}to attrs=userPassword,shadowLastChange by self write by dn="cn=a dmin,dc=example,dc=org" write by anonymous auth by * none olcAccess: {2}to * by self read by dn="cn=admin,dc=example,dc=org" write by * none olcAccess: {3}to dn.subtree="ou=users,ou=ftp,ou=services,dc=k9999,dc=z9999,dc= infra,dc=example,dc=org" by dn.exact="uid=admin,ou=managers,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org" manage ``` But something seems to be wrong. When I run `ldapsearch -D uid=admin,ou=managers,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org -W -b ou=users,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org`, I get the following result: ``` # extended LDIF # # LDAPv3 # base <ou=users,ou=ftp,ou=services,dc=k9999,dc=z9999,dc=infra,dc=example,dc=org> with scope subtree # filter: (objectclass=*) # requesting: ALL # # search result search: 2 result: 32 No such object # numResponses: 1 command terminated with exit code 32 ``` The object is actually available and `cn=admin,dc=example,dc=org` can see it without any difficulties, so it seems that my access rule is wrong. But what exactly it is? It seems that the default rule #2 (`{2} to * by self read by dn="cn=admin,dc=example,dc=org" write by * none`) fires up earlier than the rule I added. Does that mean that I should always add my custom rules before it? And why does this rule has `by * none`? Doesn't it contradict the OpenLDAP documentation? "The default access control policy is allow read by all clients" (https://www.openldap.org/doc/admin24/access-control.html). Thank you in advance. With best regards, V.Melnyk

2 2

openldap ppolicy pwdAccountLockedTime
by kevin martin 03 Jan '22

03 Jan '22

it appears from looking at ppolicy.c that pwdAccountLockedTime is not supported in openlda. is there another way to lock a users account in openldap outside of simply changing the users password? --- Regards, Kevin Martin

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openldap-technical January 2022