389-users May 2008

389-users@lists.fedoraproject.org

63 participants
54 discussions

[Fedora-directory-users] FDS <-> AD: UID/GID and OU sync
by Alex Davies 12 Jun '08

12 Jun '08

Hi All, We have an AD architecture setup, and are looking to sync FDS with this to allow us to authenticate Linux machines and network devices. We have two AD domains, and have a winsync and passsync setup with one of the domain controllers in each domain. This works, subject to the limitation that we have to manually create each OU. Once we create the OU in FDS, the users appear at the next sync. Question 1: is it possible to automatically sync *all* OU's, including creating the OU in FDS if it does not exist? We have hundreds of OUs, and I don't want to have to create them all manually. Question 2 is on UNIX UID/GID sync from AD. I've found a couple of posts which imply that it is not possible to sync UID/GUD from AD[1], but this was some time ago. An alternative piece of documentation suggests that it is, but provides no details[2]. I'm also struggling to find documentation on the libdna plugin, which I believe is involved[3]. My questions are - Is it possible to sync UID/GID from AD (where AD has the Unix Tools installed, and therefore has these attributes in the schema). - Is it possible to automatically apply a unique UID/GID to each user that does not have a UID/GID? Any help/pointers greatly appreciated. Many thanks, Alex [1] http://www.redhat.com/archives/fedora-directory-users/2007-February/msg0011… [2] "Fedora DS gets posix/unix automatic uid generation (February 08, 2007) The cvs head now contains a new feature for automatic generation of sequenced numbers which is compatible with multi-master replication environments. This feature can be used for automatic generation of posix uidNumber and gidNumber in addition to other sequenced numeric attributes required by your deployment. " http://directory.fedoraproject.org/ [3] About the only referenceI can find: http://www.redhat.com/archives/fedora-directory-users/2008-January/msg00081…

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[Fedora-directory-users] Re: MMR: excessive clock skew
by Gary Windham 11 Jun '08

11 Jun '08

Sorry for not replying to the original thread, but I just joined this list. On Tue, 13 May 2008, Rich Megginson wrote: > Has anyone seen these errors with 1.1? We fixed a few 64-bit issues in 1.1. I am running two 32-bit FDS 1.1 (fedora-ds-1.1.0-3.fc6) servers, on RHEL 5.1, in an MMR configuration. These servers, which are configured behind a load balancer, act as the University's central authentication service. We have are using the password policy plugin and have the "passwordisglobalpolicy" setting enabled, so there is a substantial amount of write activity due to replication of password- policy-related attributes (e.g., passwordRetryCount, retryCountResetTime, etc). Time on both systems is synchronized via NTP; clocks are in sync. We have the same situation as Reinhard Nappert reported on 5/13/2008: MMR will work fine for a while (usually a few weeks; the longest period we've gone is a month, the shortest time a few hours). Eventually replication will fail with the following sequence of messages in the errors log: [24/May/2008:05:18:54 -0700] - csngen_adjust_time: adjustment limit exceeded; value - 86401, limit - 86400 [24/May/2008:05:18:54 -0700] NSMMReplicationPlugin - conn=1800 op=60262 replica="<suffix>": Unable to acquire replica: error: excessive clock skew [24/May/2008:05:20:05 -0700] - csngen_adjust_time: adjustment limit exceeded; value - 86401, limit - 86400 [24/May/2008:05:20:05 -0700] NSMMReplicationPlugin - agmt="cn=kif2zapp" (zapp:389): Incremental protocol: fatal er ror - too much time skew between replicas! [24/May/2008:05:20:05 -0700] NSMMReplicationPlugin - agmt="cn=kif2zapp" (zapp:389): Incremental update failed and requires administrator action The "csngen_adjust_time" error message always reports the same value when this occurs (86401). We have also employed the workaround described by Chris St. Pierre in https://bugzilla.redhat.com/show_bug.cgi?id=233642 #c3. This resolves the problem for a short while, but it always reappears. BTW, I was in contact with Chris recently about his experiences with MMR and he said that, in addition to moving to FDS 1.1, he moved a lot of "frequently updated" data out of FDS and into MySQL, and that his problem disappeared afterward; obviously this isn't a solution for us as we are utilizing FDS as an authentication engine. We are desperately trying to find a solution to this issue that will allow us to continue using MMR...we could resort to a traditional passive/active + shared storage HA design, but we want to keep that as a last resort. If there is any additional information I should provide, please let me know. -- Gary Windham Senior Enterprise Systems Architect The University of Arizona, UITS +1 520 626 5981

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[Fedora-directory-users] console breaks after installing libnss-ldap and libpam-ldap
by Sanga M. Collins 03 Jun '08

03 Jun '08

I have successfully installed Fedora ds 1.0.4 on Ubuntu 8.04. I run into some issues when configuring Pam and Nss for the samba portion. On my first test server I was able to complete the setup without an y major problems. On all subsequent servers. I install FDS and successfully start the console and add one posix user. I then begin installing Pam and Libnss by using the auth-client-config to automatically configure the files in /etc/pam.d/ as well as the nssswith.conf. after I do this, I can no longer log in to the console, and the error logs get filled with the following error. [Mon May 19 00:43:26 2008] [notice] child pid 10675 exit signal Segmentation fault (11) Can anyone point me in the right direction? Sanga M. Collins Network Engineering ~~~~~~~~~~~~~~~~~~~~~~~ IT Management LLC 6491 Sunset Strip #5, Sunrise Fl, 33313 Tel: (954) 572 7411, Fax: (435) 578 7411

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[Fedora-directory-users] problems with pam ldap ?
by Bogdan Cehan 30 May '08

30 May '08

Hello all I'm using the fedora directory server for centralized authentication , and i have made users with posix account and i put them in ou=People like this : --------------------------------------------------------------------------------------------- # alexadu, People, pol.mediaimage.ro dn: uid=alexadu,ou=People,dc=pol,dc=ro givenName: Alexandra sn: Dumitru loginShell: /bin/bash uidNumber: 1069 gidNumber: 100 objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetorgperson objectClass: posixAccount uid: alexadu cn: Alexandra Dumitru homeDirectory: /home/alexadu ------------------------------------------------------------------------------------------ and after that i made some groups in ou=Groups like this : ----------------------------------------------------------------------------------------- # Server1, Groups, pol.ro dn: cn=Server1,ou=Groups,dc=pol,dc=ro description: group for users that have access on server 1 objectClass: top objectClass: groupofuniquenames uniqueMember: uid=lauru,ou=People,dc=pol,dc=ro uniqueMember: uid=alexadu,ou=People,dc=pol,dc=ro cn: Server1 ---------------------------------------------------------------------------------------- and my ldap.conf looks like this : URI ldap://lacatzel.pol.ro port=389 BASE dc=pol,dc=ro host lacatzel.pol.ro TLS_CACERTDIR /etc/openldap/cacerts TLS_REQCERT allow scope sub bind_policy soft #pam_password exop pam_filter objectclass=posixAccount pam_login_attribute uid pam_member_attribute memberUid pam_groupdn cn=Server1,ou=Groups,dc=pol,dc=ro pam_check_host_attr yes nss_default_attribute_value loginShell /bin/false nss_base_passwd ou=People,dc=pol,dc=ro nss_base_shadow ou=People,dc=pol,dc=ro nss_base_group ou=People,dc=pol,dc=ro --------------------------------------------------------------------------------------------- now i want to restrict some users to servers based on groups but my pam_ldap does not help me to do that , I'm using my old friend "www.google.com" to help me in this problem but with no luck ..... all my users have access to this computer .... so , if i understand wright all i have to do is create users with posix account and after that create groups and put the users in that group but this does not work ..... any ideas ? anyone use FDS for what i intend to do ? Thank you for your time ..... Bogdan

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[Fedora-directory-users] Authentication problems between FDS 1.0.1-4 on RHES 4u4
by Ken Marsh 30 May '08

30 May '08

Hi, I have a curious problem where a few (important) users cannot log into the Red Hat Enterprise Server 4 update 4 systems. However, most users (including myself) can log in. These users can log in fine to ldap'd RHES3 Update 6 systems. The FDS logs indicate a normal fetch of the user's attributes with no errors. The /var/log/secure on Red Hat 4 simply says sshd[8898]: Failed password for <username> from <hex>... Yet they can log into other LDAP based systems, including a few other RHE4 systems, that all go back to the same FDS. I have deleted their accounts and recreated them, which usually fixes strange problems like this, but no luck. Some accounts are old (date back to FDS 7.1) and others are new. I examined the DS attributes for these users, and the only difference I could find was the "Object class" attribute was missing the "account" value. So, I added it, but to no avail. I compared /etc/pam.d/system-auth and they are essentially identical between RHES3 and 4 systems. /var/log/secure also has a "error" Could not get shadow information for <username>" but that happens on all users. It seems to be a soft error, but I would like to get rid of it. Can anyone give me a clue where to look? Thanks! Ken

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[Fedora-directory-users] recovering admin password
by Eric Beda 30 May '08

30 May '08

Hi, Forgotten the admin password, how do i recover it, help please

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[Fedora-directory-users] Multimaster replication
by sigid＠JINLab 29 May '08

29 May '08

Dear all, Is there any guidance out there on howto configure multimaster replication on fds 1.1 without using the mmr.pl script? Thanks

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[Fedora-directory-users] PassSync source code
by Rudi J. Heitbaum 29 May '08

29 May '08

All, I am trying to find the source code for PassSync but am not having any luck could someone please point me in the right direction. Regards Rudi

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Re: [Fedora-directory-users] FDS instance over UDP port (389)
by Howard Chu 28 May '08

28 May '08

> Date: Fri, 23 May 2008 10:42:25 -0600 > From: Rich Megginson<rmeggins(a)redhat.com> > Fernando MuÃ±oz wrote: >> Hello, >> >> >> I've got a question, >> >> Is there any way for raise a LDAP instance over 389 UDP port (CLDAP)? OpenLDAP supports CLDAP. Note that there is no formal spec for this protocol; there was a draft for LDAPv2 that expired long ago. Microsoft's version of CLDAP (naturally) does not conform to that draft. OpenLDAP supports both the expired draft and the Microsoft bastardization thereof, and has done so since at least 2000. But offering LDAP over UDP is a far cry from joining an AD environment. (See PADL's XAD, for instance, which was developed on OpenLDAP and subsequently sold to Novell.) >> I've been trying to join a WindowsXP machine to a >> FDS(backend)-SAMBA3(PDC) environment, and I've got a problem: >> >> Sniffing a WindowsXP (client) machine traffic, ï»¿I see there are LDAP >> petitions (connections) through UDP 389 port, and FDS instance run over >> TCP ports. >> > No, Fedora DS does not support UDP (CLDAP). > > You should check out Samba4. Yes, that would probably be the best route now. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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[Fedora-directory-users] Password Syntax Checking
by Eric Brown 27 May '08

27 May '08

I have been trying to get the Password Syntax Checking working with FDS 1.0.4 and am having some trouble with the passwords that it is allowing and the ones that are returning invalid syntax. I started by setting the password policy the way I thought I wanted to use for my environment, but then no passwords would work, so I changed everything down to the minimums that I could find, but I am still getting several passwords rejected due to a syntax error. I am not using the console and I need to be able to set this through an LDIF file. Currently I have these settings for the password policy configuration: passwordInHistory: 2 passwordUnlock: on passwordGraceLimit: 0 passwordMustChange: off passwordWarning: 86400 passwordLockout: on passwordMinLength: 4 passwordMinDigits: 0 passwordMinAlphas: 0 passwordMinUppers: 0 passwordMinLowers: 0 passwordMinSpecials: 0 passwordMin8bit: 0 passwordMaxRepeats: 0 passwordMinCategories: 1 passwordMinTokenLength: 1 passwordMaxFailure: 3 passwordMaxAge: 3888000 passwordResetFailureCount: 120 passwordisglobalpolicy: off passwordChange: on passwordExp: on passwordLockoutDuration: 300 passwordCheckSyntax: on passwordMinAge: 0 passwordStorageScheme: SSHA256 I am getting syntax errors on passwords like the following: spfihykr spfihykr10 qpwoeiru 10293847 cmdjeu37 alskdj37 xnshwy26 doggie doggie12 but things like testpass works just fine. I figure that I have something not configured properly, but I don't know what needs to be changed. And some of the values that I am using were in the User Account Management section of the Administrator's Guide two weeks ago, but they are missing now. Thanks in advance, Eric Brown

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389-users May 2008