openldap-technical

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9942 discussions

Very quick pointer
by Tim Watts 30 May '12

30 May '12

Hi :) My LDAP skillz are (very) slowly coming along - thanks to good folk here, I think I have figured out ACLs and I have managed to get rwm/relay to emulate an old tree structure (well enough) whilst being able to design a better structure for our department. My next question is just a request for a pointer. My understanding of LDAP authentication is very limited. What I would like to do is a 2 phase transition to kerberos (which I do understand): 1) Rig OpenLDAP so all password changes get sent to the kerberos server but do not use it for authentication. In the meantime we will continue authenticate with the SSHA1 hashes in the user's LDAP entry. 2) After some time (months) when everyone has eventually done a password change, the Kerberos server will be well enough in sync. Now I would like to switch OpenLDAP to using kerberos on the backend (ie for binds etc) and I will purge the SSHA1 hashes. ================== I most interested in some pointers for stage 1) is someone could be kind enough to help me out - is there a particular name for this mechanism, or a module that handles this kind of stuff? ================== 2) I think I can probably google for myslef (keywords SASL and/or GSSAPI and/or LDAP+Kerberos. I've had a skim but did not notice an obvious way to handle 1) without 2) I apologise if it's a dumb question :-o Many thanks in advance :) Cheers Tim -- Tim Watts Personal Blog: http://www.dionic.net/tim/

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Re: Attributes host and personal (mail, telephone...)
by Carlos Barrero Martínez 30 May '12

30 May '12

Thank you for your answer. I'm reading the book published by O'Reilly, LDAP System Administration. However, the world of LDAP is very large and used for many tasks. I am creating my content tree and I can define it in many ways. And I know how to do it or not. Only that. I'm not that person who prefers to ask to learn. Still, thanks! 2012/5/30 Turbo Fredriksson <turbo(a)bayour.com> > On Wed, 30 May 2012 16:58:54 +0200, Carlos Barrero Martínez wrote: > >> Thank you Turbo. >> >> I'm going to see this page to learn more about ldap. However... can >> you tell me how can I do it (attributes host and personal attributes)? >> > > I can, but I'm not going to... And the reason is that LDAP is _way_ to > complicated to teach in a mail or two... > > You really (really, really!!) need to get to the grips on the basics before > you continue. And the others on the list will basically tell you the same > thing. We've all been through this so many times before... > > My HOWTO, but mostly my book, is designed for this specific purpose - teach > beginners the basics and then some. > >

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Re: Attributes host and personal (mail, telephone...)
by Carlos Barrero Martínez 30 May '12

30 May '12

Thank you Turbo. I'm going to see this page to learn more about ldap. However... can you tell me how can I do it (attributes host and personal attributes)? Thanks! 2012/5/30 Turbo Fredriksson <turbo(a)bayour.com> > On Wed, 30 May 2012 15:46:37 +0200, Carlos Barrero Martínez wrote: > >> I am a newbie and I'm installing and configuring my first ldap server >> for my company. >> > > Have a look at http://www.bayour.com/LDAPv3-**HOWTO.html<http://www.bayour.com/LDAPv3-HOWTO.html> > -- > ... but you know as soon as Oracle starts waving its wallet at a Company > it's time to run - fast. > /illumos mailing list >

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acl filter using attribute memberof
by Dorit 30 May '12

30 May '12

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Multi-Master Replication
by Brian Carpio 29 May '12

29 May '12

Hi, I'm currently using Ubuntu 10.04 (I've set this up on RHEL 5.x but the config is way different in Ubuntu). Anyway, at first I figured I had everything working. When I made an update to ldap01 I immediately saw the change on ldap02. However, if I take down slapd on ldap02 (or 01) and I add LDAP entries into ldap01, then bring ldap02's slapd process back online I never see the entries created while slapd was down on ldap02. New entries continue to propigate between ldap01 and ldap02 and long as both servers have the slapd process running, but the entries created when slapd was down on ldap02 never propagate to 02. Here are my configs and ldap versions: ii slapd 2.4.21-0ubuntu5.7 OpenLDAP server (slapd) ---- /etc/ldap/slapd.d/cn=config/olcDatabase={0}config.ldif ----- # AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify. # CRC32 deacdc79 dn: olcDatabase={0}config objectClass: olcDatabaseConfig olcDatabase: {0}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 anonymou s auth by dn="cn=admin,dc=example,dc=net" write by * none olcAccess: {2}to * by self write by dn="cn=admin,dc=example,dc=net" write b y * read structuralObjectClass: olcDatabaseConfig entryUUID: 19eb3cc6-3898-1031-954c-351a2fbb42e9 creatorsName: cn=config createTimestamp: 20120522202605Z olcSyncrepl: {0}rid=001 provider="ldap://ldap-01:389" type=refreshAndPer sist retry="5 5 300 +" searchbase="cn=config" attrs="*,+" bindmethod=simple b inddn="cn=admin,dc=example,dc=net" credentials="secret" olcSyncrepl: {1}rid=002 provider="ldap://arch-ldap-02:389" type=refreshAndPer sist retry="5 5 300 +" searchbase="cn=config" attrs="*,+" bindmethod=simple b inddn="cn=admin,dc=example,dc=net" credentials="secret" olcMirrorMode: TRUE entryCSN: 20120528195647.027315Z#000000#000#000000 modifiersName: cn=admin,dc=example,dc=net modifyTimestamp: 20120528195647Z ---- /etc/ldap/slapd.d/cn=config/olcDatabase={0}config/olcOverlay={0}syncprov.ldif ---- # AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify. # CRC32 807029fa dn: olcOverlay={0}syncprov objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {0}syncprov olcSpNoPresent: TRUE structuralObjectClass: olcSyncProvConfig entryUUID: 3be00cb6-3dee-1031-8f60-519aa1b6f74f creatorsName: cn=admin,dc=example,dc=net createTimestamp: 20120529152514Z entryCSN: 20120529152514.987191Z#000000#000#000000 modifiersName: cn=admin,dc=example,dc=net modifyTimestamp: 20120529152514Z ---- /etc/ldap/slapd.d/cn=config/olcDatabase={1}hdb.ldif ---- # AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify. # CRC32 1b0a3130 dn: olcDatabase={1}hdb objectClass: olcDatabaseConfig objectClass: olcHdbConfig olcDatabase: {1}hdb olcDbDirectory: /var/lib/ldap olcSuffix: dc=example,dc=net olcAccess: {0}to attrs=userPassword,shadowLastChange by self write by anonymou s auth by dn="cn=admin,dc=example,dc=net" write by * none olcAccess: {1}to dn.base="" by * read olcAccess: {2}to * by self write by dn="cn=admin,dc=example,dc=net" write b y * read olcLastMod: TRUE olcRootDN: cn=admin,dc=example,dc=net olcRootPW:: e1NTSEF9Ni9IZWJCczRTbmJQYlc4NHFOMWxHWUI5NVNoVUl4U20= olcDbCheckpoint: 512 30 olcDbConfig: {0}set_cachesize 0 2097152 0 olcDbConfig: {1}set_lk_max_objects 1500 olcDbConfig: {2}set_lk_max_locks 1500 olcDbConfig: {3}set_lk_max_lockers 1500 olcDbIndex: objectClass eq structuralObjectClass: olcHdbConfig entryUUID: 19ebfdc8-3898-1031-9554-351a2fbb42e9 creatorsName: cn=config createTimestamp: 20120522202605Z olcSyncrepl: {0}rid=001 provider="ldap://ldap-01:389" type=refreshAndPer sist retry="5 5 300 +" searchbase="dc=example,dc=net" attrs="*,+" bindmeth od=simple binddn="cn=admin,dc=example,dc=net" credentials="secret" olcSyncrepl: {1}rid=002 provider="ldap://ldap-02:389" type=refreshAndPer sist retry="5 5 300 +" searchbase="dc=example,dc=net" attrs="*,+" bindmeth od=simple binddn="cn=admin,dc=example,dc=net" credentials="secret" olcMirrorMode: TRUE entryCSN: 20120528195647.026244Z#000000#000#000000 modifiersName: cn=admin,dc=example,dc=net modifyTimestamp: 20120528195647Z ----- /etc/ldap/slapd.d/cn=config/olcDatabase={1}hdb/olcOverlay={0}syncprov.ldif ---- # AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify. # CRC32 807029fa dn: olcOverlay={0}syncprov objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {0}syncprov olcSpNoPresent: TRUE structuralObjectClass: olcSyncProvConfig entryUUID: 3be00cb6-3dee-1031-8f60-519aa1b6f74f creatorsName: cn=admin,dc=example,dc=net createTimestamp: 20120529152514Z entryCSN: 20120529152514.987191Z#000000#000#000000 modifiersName: cn=admin,dc=example,dc=net modifyTimestamp: 20120529152514Z

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Re: OpenLDAP freeze
by Ioan Indreias 29 May '12

29 May '12

Are there any chances to have your feedback on the information provided? Best regards, Ioan On Fri, May 18, 2012 at 11:25 AM, Ioan Indreias <indreias(a)gmail.com> wrote: > Hello all, > > We are running OpenLDAP in a SLAVE-MASTER configuratiorn (Slave for > another OpenLDAP server //L1// and Master for 2 Axigen Back End nodes > //B1 and B2//). > > Currently we have ~31000 accounts and experience random freeze events > of the slapd (nothing writing in the logs, CPU 0%) when a series of > add/delete operations are performed over the normal LDAP > traffic.Random means an interval between 15 and 80 minutes after we > start add/delete accounts. > > The add/delete bash script is running in loop, adding 60 accounts, > sleep 20 sec, delete the accounts and sleep another 40 sec. All > operations are performed on the MASTER L1 server and are propagated > correctly to our server (till is freezing of course). > > Running with 2.4.23 we have considered to upgrade to 2.4.31 but the > same problem was observed. On both cases we have used BDB 4.7.25, with > all available patches. > > The server is a RHEL 5.5, 64 bits with plenty of memory and CPUs. > > I am attaching 3 archives: the slapd configuration and gdb+db_stat for > 2 freeeze events. > > Could somebody point if there is a slapd or bdb problem? Any hints are > appreciated. > > Best regards, > Ioan Indreias > www.modulo.ro > > === > May 18 09:37:10 saevrvmp11 slapd[13834]: @(#) $OpenLDAP: slapd 2.4.31 > (May 10 2012 16:11:06) $ > root@host64.modulo.ro:/root/openldap-2.4.31/servers/slapd > > [root@host tmp]# ldd /usr/sbin/slapd > libuuid.so.1 => /lib64/libuuid.so.1 (0x0000003efe000000) > libssl.so.6 => /lib64/libssl.so.6 (0x0000003f05400000) > libcrypto.so.6 => /lib64/libcrypto.so.6 (0x0000003f00800000) > libresolv.so.2 => /lib64/libresolv.so.2 (0x0000003f01800000) > libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003efb800000) > libc.so.6 => /lib64/libc.so.6 (0x0000003efac00000) > /lib64/ld-linux-x86-64.so.2 (0x0000003efa800000) > libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 > (0x0000003f02800000) > libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x0000003f03000000) > libcom_err.so.2 => /lib64/libcom_err.so.2 (0x0000003f01000000) > libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 (0x0000003f02c00000) > libdl.so.2 => /lib64/libdl.so.2 (0x0000003efb000000) > libz.so.1 => /usr/lib64/libz.so.1 (0x0000003efbc00000) > libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 > (0x0000003f02400000) > libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x0000003f02000000) > libselinux.so.1 => /lib64/libselinux.so.1 (0x0000003efc400000) > libsepol.so.1 => /lib64/libsepol.so.1 (0x0000003efc000000) > ===

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UPGRADING OPENLDAP
by Borresen, John - 0442 - MITLL 29 May '12

29 May '12

Planning to upgrade our OpenLDAP from 2.4.23 to 2.4.31 shortly and just getting my ducks in a row. 1) my current Berkeley flavor is 4.8.30 2) As stated, OpenLDAP is 2.4.23 (using slapd.d) Looking for any "gotchas" to be on look out for. Can I do the upgrade on top of the current directory structure, restore the config then restart? Am I going to need to upgrade my flavor of Berkeley? I had originally attempted to use Berkeley 5.2.36 but never could get it to build/compile correctly on my platform (too many compilation errors to list). Dave Borresen Solaris/Linux Systems Administrator Surveillance Systems Group MIT Lincoln Laboratory john.borresen(a)ll.mit.edu

2 1

Replication Design Advice
by Andrei Bănaru 29 May '12

29 May '12

Hello OpenLDAP users, I’m looking for some advice concerning an OpenLDAP solution I’m about to deploy between 4 locations in company I work for. Currently I’ve implemented a LDAP DIT in my country and we’ve had exquisite results. I’ve integrated RADIUS for wireless authentication, MIT Kerberos, Samba PDC, dovecot and the list can continue but that’s not the scope of this message. We have some global services located in one of the countries that all other 3 countries use ( trac, svn, web2project, alfresco ). We want that each country to have it’s own LDAP DIT ( we don’t want to have a global LDAP with slaves in each country because some of us want locally significant objects ( for authorization purposes ) and having a slave LDAP means read-only ). That’s why I thought of using multi-n-master on each of the four LDAP servers. The ideea I had was that each country will have only a portion of the DIT being sent to the others ( we narrow the searchbase in syncrepl ): Country 1 sends ou=COUNTRY-1,dc=example,dc=com Country 2 sends ou=COUNTRY-2,dc=example,dc=com Country 3 sends ou=COUNTRY-3,dc=example,dc=com Country 4 sends ou=COUNTRY-4,dc=example,dc=com In each ou=COUNTRY-{1..4} they will have ou=People and ou=Groups. Basically that’s the only thing I want to be consistent across all LDAP DITs. I’ve tested the solution using some virtual machines and besides the starttls and some things each administrator will have to be cautious about things went smoothly. I've also read something about slapo-translucent - will now test to see how it works. Can I get some suggestions / maybe a whole new architecture for my needs in case I didn’t foresee problems ? Thx! -- Andrei BĂNARU Internal Support CCNA Security, CCIP StreamWIDE Romania

1 0

How do tool verify certs with ldapi:// ?
by Peter Marschall 28 May '12

28 May '12

Hi, how do the openldap tools technically verfify certificates with ldapi:// ? With ldapi, you don't have a hostname or IP address, so how do the openldap tools do it? I tried to browse the code but got losat somewhere ion the way. Any hints to the code or a short step-by-step explanation will help. Background of this question: I want to implement the feature in perl-ldap. Thanks in advance for your help Peter -- Peter Marschall peter(a)adpm.de

3 13

Re: how can make slave use tls to connect to master for syncrepl (solved)
by zhong ming wu 28 May '12

28 May '12

Never mind. I had to put this line in the sysrepl section of the slave starttls=yes Sorry about the noise. On Sun, May 27, 2012 at 10:29 PM, zhong ming wu <mr.z.m.wu(a)gmail.com> wrote: > Hello > > I am using version 2.4 and in the process of setting up a master/slave > pair using syncrepl. > > This is working as expected if I don't have enforce security and > confidentiality with "security ssf=128" global directive in the > master. > As soon as I turn it on, replication stops working. > > It seems that the slave consumer is not using TLS to connect to > master. However I can use 'ldapsearch' with '-ZZ' option to connect > to master from slave and get all records I want. > > On my slave machine, I also have the following directive > > TLS_CACERT /etc/pki/tls/certs/ca.crt.crl > > in ldap.conf > > Notice that without this line 'ldapXXX' commands with '-ZZ' fails from > slave to master. This confirms that at least 'ldap.conf' is in the > correct location at least as far as 'ldapXXX' commands are concerned. > > Can someone point me in the right direction? I have read many > chapters on this page > > http://www.openldap.org/doc/admin24/index.html > > Both slave and master are on centos 6.2 and openldap software is > standard centos rpm. > > Here are the log entries on the master when slave fails to bind with TLS > > May 27 22:14:53 cat slapd[2456]: conn=1000 fd=13 ACCEPT from > IP=192.168.0.2:41083 (IP=0.0.0.0:389) > May 27 22:14:53 cat slapd[2456]: conn=1000 op=0 BIND > dn="cn=root,dc=example,dc=com" method=128 > May 27 22:14:53 cat slapd[2456]: conn=1000 op=0 RESULT tag=97 err=13 > text=confidentiality required > May 27 22:14:53 cat slapd[2456]: conn=1000 op=1 UNBIND > May 27 22:14:53 cat slapd[2456]: conn=1000 fd=13 closed > > Sincerely > > Mr Wu

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openldap-technical