openldap-technical April 2009

openldap-technical@openldap.org

71 participants
79 discussions

Syncrepl connections failing
by John Kane 05 May '09

05 May '09

I am having a problem with what appears (to me) to be 'stale' TCP connections for syncrepl between the master and a pair of slaves. After restarting all, I see changes on the master replicated to both slaves. BUT, if I wait about 30 minutes or more, then make a change, the replication fails (most of the time). netstat on the LDAP port show the connections still established, but queued packets at the master server. After about 15 minutes, the master server drops the connection. An overnight tcpdump on the master showed LDAP occasionally sending a keep-alive, with 2hrs between the keep-alive messages (these keep-alives are inconsistent, though, some nights I see none). I am running Red Hat EL5 and Openldap 2.3.43 on all servers with no TLS or SASL (in our integration/test facility). I don't see anything in the documentation pertaining to keep-alives, other than ITS#4708 for 2.3.38. Here's the syncrepl for one slave: syncrepl rid=004 type=refreshAndPersist provider=ldap://172.24.1.191 retry="30 10 300 3" searchbase="o=partner_x,dc=ourcompany-int,dc=net" filter="(objectClass=*)" scope=sub schemachecking=off bindmethod=simple binddn="cn=syncRepl,o=partner_x,dc=ourcompany-int,dc=net " credentials="secret" updateref ldap://172.24.1.191 The other slave's slapd.conf is indentical except rid=002. On the master I have: overlay syncprov syncprov-checkpoint 100 30 syncprov-sessionlog 100 Note: The 2 slaves are running on blades in an IBM chassis, and the master is on a 1U Linux server, just 'one-hop' away. Prior to this, when I had a master/slave pair running on the blades, syncRepl was working fine for several months. It was not until I moved the master to the another server did the failures start. Thanks in advance for any help or info. John Kane This message is confidential to Prodea Systems, Inc unless otherwise indicated or apparent from its nature. This message is directed to the intended recipient only, who may be readily determined by the sender of this message and its contents. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient:(a)any dissemination or copying of this message is strictly prohibited; and(b)immediately notify the sender by return message and destroy any copies of this message in any form(electronic, paper or otherwise) that you have.The delivery of this message and its information is neither intended to be nor constitutes a disclosure or waiver of any trade secrets, intellectual property, attorney work product, or attorney-client communications. The authority of the individual sending this message to legally bind Prodea Systems is neither apparent nor implied,and must be independently verified.

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Help for special ACL needed
by Florian Götz 04 May '09

04 May '09

A warm "Hello" from germany to the openldap-technical list! I´m rather new to OpenLDAP, using version 2.4.12 on a SLES11 server. I need to write an ACL which allows a user to see his own entry (objectClass build up on inetOrgPerson) and nothing else. I know that this isn´t the intended use of the LDAP system, but our manager wants it that way. I tried it with somekind of that: access to dn.regex="uid=([^,]+),dc=justushere,dc=de$" attrs=entry by dn.regex="uid=$1,ou=Users,dc=justushere,dc=de" write by users none but I just get a message about invalid credentials. Used command was: ldapsearch -xWD uid=user1,ou=users,dc=justushere,dc=de uid=user1 ldapsearch -xWD cn=admin,dc=justushere,dc=de uid=user1 with the rootdn account shows the information, but if the uid of the user1 is used for binding it fails. Has anyone an idea how to realize these restrictions? Additionally not all attributes should get listed to the user, only a few important for him. My idea was to use a ACL like the above to be sure the user only gets access to his object and then add a second ACL below who restricts the access to the important attributes. Best regards Florian Götz

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slapd + gssapi/heimdal: using false realm in principal
by Friedemann Stoyan 30 Apr '09

30 Apr '09

Hello, I struggle with an Debian GNU/Linux (Lenny) and * slapd 2.4.11-1 * heimdal-kdc 1.2.dfsg.1-2.1 * libsasl2-modules-gssapi-heimdal 2.1.22.dfsg1-23 With this configuration: /etc/ldap/slapd.conf: # Kerberos Configuration sasl-host kerberos.lab.swapon.de sasl-realm LAB.SWAPON.DE # Mapping Kerberos Authentication Identities authz-regexp uid=([^,]*),cn=lab.swapon.de,cn=gssapi,cn=auth ldap:///ou=people,dc=lab,dc=swapon,dc=de??one?(&(uid=$1)(objectClass=person)) /etc/ldap/sasl2/slapd.conf: mech_list: GSSAPI log_level: 7 Then I get a kerberos ticket and start ldapsaerch: $ ldapsearch -H ldaps://ldap.lab.swapon.de/ SASL/GSSAPI authentication started ldap_sasl_interactive_bind_s: Other (e.g., implementation specific) error (80) The slapd logfile isn't very helpfull: slapd[11480]: conn=2 fd=14 ACCEPT from IP=[2001:6f8:12ec:11::389:fefe]:60487 (IP=[2001:6f8:12ec:11::389:fefe]:636) slapd[11480]: conn=2 fd=14 TLS established tls_ssf=128 ssf=128 slapd[11480]: conn=2 op=0 SRCH base="" scope=0 deref=0 filter="(objectClass=*)" slapd[11480]: conn=2 op=0 SRCH attr=supportedSASLMechanisms slapd[11480]: conn=2 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text= slapd[11480]: conn=2 op=1 BIND dn="" method=163 slapd[11480]: SASL [conn=2] Failure: GSSAPI Error: No credentials were supplied, or the credentials were unavailable or inaccessible. (unknown mech-code 0 for mech unknown) slapd[11480]: conn=2 op=1 RESULT tag=97 err=80 text=SASL(-1): generic failure: GSSAPI Error: No credentials were supplied, or the credentials were unavailable or inaccessible. (unknown mech-code 0 for mech unknown) slapd[11480]: conn=2 fd=14 closed (connection lost) The KDCs logfile is more interesting: Authentication Server Request from slapd (successfull): 14:37:13 AS-REQ host/reliant.lab.swapon.de(a)LAB.SWAPON.DE from IPv6:2001:6f8:12ec:11::88:fefe for krbtgt/LAB.SWAPON.DE(a)LAB.SWAPON.DE 14:37:13 Client sent patypes: encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp, encrypted-timestamp 14:37:13 Looking for PKINIT pa-data -- host/reliant.lab.swapon.de(a)LAB.SWAPON.DE 14:37:13 Looking for ENC-TS pa-data -- host/reliant.lab.swapon.de(a)LAB.SWAPON.DE 14:37:13 ENC-TS Pre-authentication succeeded -- host/reliant.lab.swapon.de(a)LAB.SWAPON.DE using aes256-cts-hmac-sha1-96 14:37:13 Client supported enctypes: aes256-cts-hmac-sha1-96, aes128-cts-hmac-sha1-96, des3-cbc-sha1, des3-cbc-md5, arcfour-hmac-md5, des-cbc-md5, des-cbc-md4, des-cbc-crc 14:37:13 Using aes256-cts-hmac-sha1-96/aes256-cts-hmac-sha1-96 14:37:13 AS-REQ authtime: 2009-04-27T14:37:13 starttime: unset endtime: 2009-04-28T00:37:13 renew till: unset 14:37:13 sending 670 bytes to IPv6:2001:6f8:12ec:11::88:fefe Ticket Granting Server Request from slapd (fails): 14:37:13 TGS-REQ host/reliant.lab.swapon.de(a)LAB.SWAPON.DE from IPv6:2001:6f8:12ec:11::88:fefe for digest/LAB(a)LAB.SWAPON.DE [canonicalize] 14:37:13 Searching referral for LAB 14:37:13 Server not found in database: digest/LAB(a)LAB.SWAPON.DE: No such entry in the database 14:37:13 Failed building TGS-REP to IPv6:2001:6f8:12ec:11::88:fefe 14:37:13 sending 107 bytes to IPv6:2001:6f8:12ec:11::88:fefe 14:37:13 TGS-REQ host/reliant.lab.swapon.de(a)LAB.SWAPON.DE from IPv6:2001:6f8:12ec:11::88:fefe for krbtgt/LAB(a)LAB.SWAPON.DE 14:37:13 Server not found in database: krbtgt/LAB(a)LAB.SWAPON.DE: No such entry in the database 14:37:13 Failed building TGS-REP to IPv6:2001:6f8:12ec:11::88:fefe 14:37:13 sending 107 bytes to IPv6:2001:6f8:12ec:11::88:fefe It's clear that this TGS-REQ is failing: the realm "LAB" in the principal "krbtgt/LAB(a)LAB.SWAPON.DE" doesn't exist. Correct would be: "krbtgt/LAB.SWAPON.DE(a)LAB.SWAPON.DE". At present I have no clue how to fix this. Good ideas would be appreciated. Regards Friedemann

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RE: CSN Too Old potential Bug
by Victor Andres Sina Sotomayor 30 Apr '09

30 Apr '09

Hi all I was reading this post in openldap-technical forum. I am in the process to install a full authenticate service here using samba and openldap, my pdc and bdc are ldap based servers, and are in different locations, using a router to connect them, then. a full master ldap is needed in these two locations. I have two ldap servers in mirror mode (in a virtual machines, using vmware), these two servers are time synchronized using the same time server. When a update a ldap entry in one server, the data replicate fine, but when I use the other, I have the following error in my logs. Apr 29 11:50:15 srvped2master slapd[7377]: do_syncrep2: cookie=rid=002,sid=002,csn=20090429165015.624045Z#000000#001#000000 Apr 29 11:50:15 srvped2master slapd[7377]: do_syncrep2: rid=002 CSN too old, ignoring 20090429165015.624045Z#000000#001#000000 The time is very difficult to maintain in sync when virtual machines are in use, and Openldap servers are extremely sensitive to time lag. Apparently this is a bug in ldap 2.4.11 and will be fixed in ldap 2.4.16 <http://www.openldap.org/lists/openldap-bugs/200903/msg00202.html> http://www.openldap.org/lists/openldap-bugs/200903/msg00202.html Anyone could solve the problem? Im using debian lenny srvped2master:/etc/ldap# apt-cache policy slapd slapd: Installed: 2.4.11-1 Candidate: 2.4.11-1 Version table: *** 2.4.11-1 0 500 http://ftp.us.debian.org lenny/main Packages 100 /var/lib/dpkg/status This is my slapd.conf ################# serverID 1 include /etc/ldap/schema/core.schema include /etc/ldap/schema/cosine.schema include /etc/ldap/schema/nis.schema include /etc/ldap/schema/inetorgperson.schema include /etc/ldap/schema/samba.schema include /etc/ldap/schema/misc.schema pidfile /var/run/slapd/slapd.pid argsfile /var/run/slapd/slapd.args loglevel 16384 modulepath /usr/lib/ldap moduleload back_hdb moduleload syncprov sizelimit 500 tool-threads 1 backend hdb database hdb suffix "dc=avhlima,dc=edu,dc=pe" rootdn "cn=admin,dc=avhlima,dc=edu,dc=pe" directory "/var/lib/ldap" dbconfig set_cachesize 0 2097152 0 dbconfig set_lk_max_objects 1500 dbconfig set_lk_max_locks 1500 dbconfig set_lk_max_lockers 1500 syncrepl rid=001 provider=ldap://192.168.4.8 type=refreshAndPersist retry="60 +" searchbase="dc=avhlima,dc=edu,dc=pe" attrs="*,+" bindmethod=simple binddn="cn=admin,dc=avhlima,dc=edu,dc=pe" credentials=XXXXXXXXXXXX mirrormode on index objectClass eq index cn pres,sub,eq index sn pres,sub,eq index uid pres,sub,eq index displayName pres,sub,eq index uidNumber eq index gidNumber eq index memberUID eq index sambaSID eq index sambaPrimaryGroupSID eq index sambaDomainName eq index default sub lastmod on checkpoint 512 30 overlay syncprov syncprov-checkpoint 100 10 syncprov-sessionlog 100 access to attrs=userPassword,sambaLMPassword,sambaNTPassword,shadowLastChange by dn="cn=admin,dc=avhlima,dc=edu,dc=pe" write by anonymous auth by self write by * none access to dn.base="" by * read access to * by dn="cn=admin,dc=avhlima,dc=edu,dc=pe" write by * read ########################## The diff between servers are only in: serverID 2 syncrepl rid=002 provider=ldap://192.168.3.8 Thanx 4 your time Victor

3 2

openldap on windows
by singularity suse 29 Apr '09

29 Apr '09

How do I set openldap running on my windows xp machine. I edited the conf fie, but it doesn't work. Thanks

1 0

backing up openldap using slapcat automatically
by hariharan＠thehindu.co.in 29 Apr '09

29 Apr '09

1 0

Ldap error: Logging region out of memory; you may need to increase its size
by vaibhav lokhande 28 Apr '09

28 Apr '09

Hi all , I am new in world of ldap. following is info about my ldap. *openldap-2.4.11-1.3.el5 openldap-servers-2.4.11-1.3.el5 nss_ldap-253-3 compat-openldap-2.4.11_2.3.27-1.3.el5 openldap-clients-2.4.11-1.3.el5 php-ldap-5.1.6-5.el5 openldap-devel-2.4.11-1.3.el5* And m getting error on command slapcat * bdb(o=******_ldap): Logging region out of memory; you may need to increase its size bdb_db_open: database "o=******_ldap": db_open(/var/lib/ldap/id2entry.bdb) failed: Cannot allocate memory (12). backend_startup_one: bi_db_open failed! (12)* *Can any one please guide me to solve this issues. Other things are working fine. But still m getting this error. Regards Vaibhav *

1 0

Adapt memberof overlay for host attribute
by Vince Rafale 28 Apr '09

28 Apr '09

Hi list, I would like to know whether anybody has succeeded in using the memberof overlay for others attributes. I would like a user entry (specifically the host attribute) to be populated when a user is added to a posixGroup. Let's say this posixGroup contains a "hostOfGroup" attribute. Is it feasible? Or do I need to code my own overlay for that purpose? If writing an overlay is not needed, is there an esaier way to do that? Thanks. Regards, Vince

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getting distinguishedName as a distinct attribute in seach result
by Erik De Zeeuw 28 Apr '09

28 Apr '09

Hello, We need to get a line with "distinguishedName: <dn>" in our search results, in order for a specific software to work with our LDAP setup. I tried to play around with rwm-map and rewrite, but could not find a solution to get this working. To be clear, I would like to get this as a search result: dn: uid=myuser,ou=people,dc=my,dc=suffix givenName: My User ... other attributes ... distinguishedName: uid=myuser,ou=people,dc=my,dc=suffix ... other attributes ... I know this might not be standard, and it indeed looks quite stupid as we already get the dn: line, but this seems to be the way it works when using active directory, and software we bought just wait for this to work. Thanks for any constructive answer that will popup :)

2 1

Segfault during Auth Benchmark request
by SAGNIMORTE Thomas (CAMPUS) 28 Apr '09

28 Apr '09

Hi, I am working on building and benchmarking OpenLDAP v2.4.16 for a large entries directory (actual test: 2 000 000 but final objective 10 000 000 users). I use SLAMD to test authentication in order to evaluate what is the maximum number of authentication I can do on my server. So I try to do 5 authentications per 5ms during 5min. My OpenLDAP 2.4.16 is install on the X86 two core 2.8Ghz server with 4Go of memory. I set 3Go in cache of DB_Config and I have look a lot on how configure properly slapd. Is it normal because I have reach system limits or can I change some parameter to optimize slapd performance? Do some people have some figures about slapd performance with large entries directory on standard server? Regards, --- Thomas

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openldap-technical April 2009