openldap-technical

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9897 discussions

Re: publisher migration or upgrade
by Scott Bickford 25 Jan '18

25 Jan '18

Quaanh, I did not use -q on slapadd. Essentially I do a slapadd -f /etc/openldap/slapd.conf -b o=myco,c=us, -v -w > load_myco.log We have three databases, so there are three slapadd above with -b o=myapps,c=us -v -w > load_apps.log and a -b o=mycust,c=us -v -w > load_cust.log We have a very large custom schema and three databases, so we are still using slapd.conf instead of cn=config. The schema dates back to the 1990s. The database is "bdb" on all three schemas. The three production subscribers are load balanced and just one publisher, which is not load balanced. It is used by some java applications (which are also clustered) for updates. I am hoping that we can replace subscribers over the course of several weeks since there is quite a bit involved and have them up and running in production with the publisher still on 2.4.40 and the subscribers on 2.4.44. I am working with a VMWare person on planning how we are going to rename the servers.

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Pending EPIPE fix for macOS
by Lorenz Bauer 25 Jan '18

25 Jan '18

Hello Howard, List, My bug and corresponding patch seems to have fallen through the cracks: http://www.openldap.org/its/index.cgi?findid=8590 Could you have a look and let me know whether you'd like any modifications? Best Lorenz -- Lorenz Bauer | Systems Engineer 25 Lavington St., London SE1 0NZ www.cloudflare.com

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Re: Pending EPIPE fix for macOS
by Lorenz Bauer 25 Jan '18

25 Jan '18

Hello Quanah, I have access to a macOS system, is there a test suite I can run which would help? Best Lorenz On 24 January 2018 at 17:39, Quanah Gibson-Mount <quanah(a)symas.com> wrote: > Hi Lorenz, > > The issue hasn't been lost, but we don't have easy access to an OSX system > to test against. We'll see what we can get set up. > > --Quanah > > > --On Tuesday, January 23, 2018 2:17 PM +0000 Lorenz Bauer < > lmb(a)cloudflare.com> wrote: > > >> >> >> >> >> Hello Howard, List, >> >> My bug and corresponding patch seems to have fallen through the cracks: >> http://www.openldap.org/its/index.cgi?findid=8590 >> >> Could you have a look and let me know whether you'd like any >> modifications? >> >> Best >> Lorenz >> >> >> >> >> >> >> -- >> >> Lorenz Bauer | Systems Engineer >> 25 Lavington St., London SE1 0NZ >> >> www.cloudflare.com >> > > > > -- > > Quanah Gibson-Mount > Product Architect > Symas Corporation > Packaged, certified, and supported LDAP solutions powered by OpenLDAP: > <http://www.symas.com> > > -- Lorenz Bauer | Systems Engineer 25 Lavington St., London SE1 0NZ www.cloudflare.com

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Using virtual IP and N-way mutlimaster mode
by Clément OUDOT 24 Jan '18

24 Jan '18

Hello, I would like to use the N-way mutlimaster mode and a virtual IP to manage failover for applications. The virtual IP will be configured trough keepalived. To work with N-way mutlimaster, we must start OpenLDAP process on the LDAP URI defined in cn=config olcServerID parameter. So we can't use ldap://* to start the service. On the machine running the virtual IP, I can of course listen on this IP by adding an LDAP URI in the start command: slapd -h ldap://master1.example.com ldap://virtual.example.com But this command will not work it the virtual IP is not set on the node as OpenLDAP refuses to start on an unknown IP. Does anyone already face this issue and found a solution? Clément.

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publisher migration or upgrade
by Scott Bickford 24 Jan '18

24 Jan '18

I have a RHEL 6 OpenLDAP 2.4.40 publisher with three subscribers in production of the same version. In development i also have a RHEL 6 OpenLDAP 2.4.40 and one subscriber of the same version. I got a RHEL 7 OpenLDAP 2.4.44 subscriber replicating in development. I was able to load via slapadd the subscriber in about 30 minutes from an overnight slapcat ldif.files from the publisher. How can I upgrade the publisher without too much down time and ultimately do the same in production? I want to also keep the same host names.

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Re: uidNumber for Service Accounts?
by Douglas Duckworth 22 Jan '18

22 Jan '18

Hi Michael I added it using ldapadd. I removed the account ObjectClass and now only use applicationProcess: # preset, Service Accounts, blah dn: uid=preset,ou=Service Accounts,dc=blah objectClass: top objectClass: extensibleObject objectClass: applicationProcess uid: preset cn: preset sn: preset givenName: preset title: Password Reset Account description: Service Account For Resetting Passwords Thanks, Douglas Duckworth, MSc, LFCS HPC System Administrator Scientific Computing Unit Physiology and Biophysics Weill Cornell Medicine E: doug(a)med.cornell.edu O: 212-746-6305 F: 212-746-8690 On Mon, Jan 8, 2018 at 4:49 PM, Michael Ströder <michael(a)stroeder.com> wrote: > Douglas Duckworth wrote: > > adding new entry "uid=preset,ou=Service Accounts,dc=blah > > ldap_add: Object class violation (65) > > additional info: invalid structural object class chain > > (account/applicationProcess) > > A directory entry must have a *single* structural object class. While > there are usually multiple structural object classes listed only one of > them is *the* structural object class. The others are parent object > classes of the structural object class. > > Since 'account' and 'applicationProcess' both directly SUP abstract > object class 'top' they count as two distinct structural object classes. > > > Though this does work as it's now in the LDAP server: > > > > dn: uid=preset,ou=Service Accounts,dc=blah > > objectClass: top > > objectClass: account > > objectClass: applicationProcess > > objectClass: simpleSecurityObject > > It's invalid and you might run into issues modifying this entry later. > You should choose either 'account' or 'applicationProcess'. > > BTW: It should normally not be possible to add such entry. > How did you add it? With slapadd or by using Relax Rules Control? > > Ciao, Michael. > >

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[Q] how to add country attribute to organizationalUnit objectclass?
by Zeus Panchenko 19 Jan '18

19 Jan '18

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi, I'm using organizationalUnit to hold organization related data and I'm wondering, how can I add country attribute to the object? I find it stumbling, all other address attributes are available but country ... I'd like to be able to do something like this: - ---[ fake object quotation start ]------------------------------------------- dn: ou=starfleet,ou=Organizations,dc=umidb associatedDomain: starfleet.startrek.in businessCategory: deep-space exploratory businessCategory: peacekeeping businessCategory: military service l: Fort Baker c: us objectClass: country objectClass: top objectClass: organizationalUnit objectClass: domainRelatedObject ou: starfleet physicalDeliveryOfficeName: Starfleet LLC postalAddress: here the address to be added postalCode: 12345 postOfficeBox: 1a registeredAddress: here the address to be added too st: California street: Space St. telephoneNumber: 922 - ---[ fake object quotation end ]------------------------------------------- - -- Zeus V. Panchenko jid:zeus@im.ibs.dn.ua IT Dpt., I.B.S. LLC GMT+2 (EET) -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlphvyQACgkQr3jpPg/3oyr49QCfW+SAQZeq9orhQasTuqtb2A2E KZAAoLnO8DlP7z6bkNDe2JUKw9+JbnlI =9epg -----END PGP SIGNATURE-----

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Slapd pegs CPU every ten minutes
by Singley, Norman 18 Jan '18

18 Jan '18

Hi folks - I have an issue with oldap 2.36 in which every ten minutes, slapd starts consuming all available CPU resources briefly. When this happens ldap searches timeout. I have bumped up the cache size to 1.5 GB dn2id.bdb and id2entry.bdb are approx. 60 mb combined. I'm reading through this: https://www.openldap.org/devel/admin/tuning.html I get errors (mismatched version) when I run DB_STAT (database environment version mismatch) So, I don't have much more to report there. I set logging back to the default to minimize logging. There are three nodes in our cluster - one master. Is there anything else I can look at to help troubleshoot? I am wondering what would cause slapd to peg the cpu at exactly 10 minute intervals. Thanks for any help. Norman Singley Directory Services 406 243 6799 Norman.singley(a)mso.umt.edu

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Re: Antw: RE: [EXTERNAL] Incosistent config after schema modification
by Quanah Gibson-Mount 15 Jan '18

15 Jan '18

--On Monday, January 15, 2018 8:21 AM +0100 Ulrich Windl <Ulrich.Windl(a)rz.uni-regensburg.de> wrote: > > >>>> Quanah Gibson-Mount <quanah(a)symas.com> schrieb am 11.01.2018 um 16:56 >>>> in > Nachricht <5066F03FF8233B456CA521B7(a)[192.168.1.30]>: >> --On Thursday, January 11, 2018 8:40 AM +0100 Ulrich Windl >> <Ulrich.Windl(a)rz.uni-regensburg.de> wrote: >> >>> But those weights are non-standard LDIF, right? >> >> OpenLDAP is the only directory server to implement >> draft-chu-ldap-xordered-00 so far as I know. However, there is no >> standard on how server configurations are managed, so it's rather >> immaterial. > > But the mechanism is independent from server management (talking about > LDIF), isn't it? Hi Ulrich, I'm not clear what you mean by "the mechanism". As far as I know, only OpenLDAP implements having weighted attributes, and as far as I know, only the OpenLDAP server has the concept of removing items in cn=config by weight, or of doing inserts using the weight, etc, which is something specific to the cn=config implementation in OpenLDAP. --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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Re: mdb fragmentation
by Quanah Gibson-Mount 15 Jan '18

15 Jan '18

--On Thursday, August 24, 2017 8:30 PM -0500 Quanah Gibson-Mount <quanah(a)symas.com> wrote: > Hi Geert, > > If I could, I would delete 8664 from the ITS system entirely as it was > filed based on invalid information that was provided to me. It generally > should be ignored. > > When a write operation is performed with LMDB, the freelist is scanned > for available space to reuse if possible. The larger the size of the > freelist, the longer amount of time it will take for the operation to > complete successfully. When the database has gotten to a certain point > of fragmentation (This differs based on any individual use case), it will > be start taking a noticeable amount of time for those write operations to > complete and the server processing the write operation does essentially > come to a halt during this process. Once the write operation completes, > things go back to normal. The only solution is to dump and reload the > database (slapcat/slapadd or mdb_copy -c). Eventually, you will get back > into the same situation and have to do this again. > > A recent option was added to the slapd-mdb configuration (rtxnsize) that > can also help reduce the rate of fragmentation. There are some > performance related issues you can find discussed on the -devel list from > when it was added. Whether or not you are affected by them and whether > or not the setting will help you in particular depends on whether or not > your searches result in a large number of entries being returned. You > can find some guidelines around tuning the parameter that I came up with > in that thread. If you do not have an unlimited Zimbra License, the > license check performed by the store servers will definitely affect this, > since the result set is all active accounts which can be quite large. > > Additionally, I had at one point had a patch for the Zimbra build of > OpenLDAP that made it very aggressive in finding freespace to reuse. I > don't recall if it is still applied (I don't believe it currently is > based on what I saw in github). It basically meant that in Zimbra, it > would work extra hard to find reusable freespace, which would reduce the > rate at which the database would fragment, but it also meant that once > the DB was fragmented enough, it would amplify the amount of time it took > for a write op to complete. I.e., it was a tradeoff of a longer time to > reach a catastrophic state, but the state was more catastrophic once > achieved. > > This is one area where LMDB differs significantly from back-hdb/bdb. You > could have back-bdb/hdb databases that endured a high rate of write > operations be in effect for years w/o needing maintenance. With LMDB, > you get better read & write rates, but it requires periodic reloads. I wanted to follow up on this, based on doing an examination of Geert's database, and other affected databases. Geert already has this answer, but it's useful for the general OpenLDAP community. This fragmentation problem is not common. It depends entirely on size of the entries in the database. The issue arises when entries in the LDAP DB are greater than the LMDB pagesize (Usually 4KB) and then have frequent updates. This most often occurs in one of two ways: a) multi-valued attributes with a large number of values b) a very large single-valued attribute (I.e., binary data) For the first problem (a), there is code in the 2.5 release to address this problem, called multival. This feature puts multi-valued attributes with a (configurable) number of values into its own sub-database. For (b), there's not really a solutionn, but it's pretty rare. So for those who have entries that are < 4 KB, they will never see this problem. Note that this is the size of the binary entry on disk, not the size of the entry when exported to LDIF. The binary size is generally significantly smaller than the LDIF version. --Quanah

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openldap-technical