openldap-bugs November 2008

openldap-bugs@openldap.org

44 participants
242 discussions

sync'ing fails for modrdn
by Steffen Kaiser 28 Nov '08

28 Nov '08

Hello, I have configured a central OpenLDAP, using Debian Etch, version: slapd 2.3.30-5+etch1, which is also a sync provider. Another Debian Etch box uses the sync: syncrepl rid=123 provider=ldap://example.com type=refreshAndPersist retry="5,2,30,2,60,+" interval=00:01:00:00 searchbase="basedn" filter="(objectClass=*)" scope=sub attrs="*,+" sizelimit=0 timelimit=0 schemachecking=on bindmethod=simple binddn="someDN" credentials="somePwd" starttls=critical This works fine, but moddn fails: for testing purpose I ldapadd : dn: c=testtt,ou=basedn c: testtt objectClass: country then: ldapmodrdn -r 'c=testtt,ou=basedn' 'c=testww' It works on the sync provider (schemacheck on) and the result is: dn: c=testww,ou=basedn objectClass: country c: testww But on the sync consumer: : syncrepl_entry: c=testww,ou=basedn : Entry (c=testww,ou=basedn attribute 'c' cannot have multiple values : entry failed schema check: attribute 'c' cannot have multiple values : null_callback : error code 0x13 : syncrepl_entry: be_modrdn (19) The testtt entry is still present on the secondary box. If I delete "testww" on the sync provider, the "testt" entry in the consumere is deleted. ==== Because I trust the sync provider I changed schemachecking=off of the syncrepl rid=123 entry Now I get this in the log: : syncrepl_entry: c=testww,ou=basedn : syncrepl_entry: be_modrdn (0) : syncrepl_entry: be_modify (0) For me it looks like that because of the sequence of the two operations, schema checking is not compatible with moddn and this should be noted in the man page. Bye, -- Steffen Kaiser

4 3

RE: (ITS#5832) Networking and Replication.
by quanah＠zimbra.com 28 Nov '08

28 Nov '08

--On November 27, 2008 2:08:06 PM +0000 Nils.Hammar(a)cybercomgroup.com wrote: > ------=_NextPart_000_0029_01C950A1.DC1D8A50 > Content-Type: text/plain; > charset="us-ascii" > Content-Transfer-Encoding: 7bit > > Further investigation into this issue seems to indicate that the problem > is more related to the Berkeley DB 4.7.25 database than it is related to > OpenLDAP itself. > > Sorry for causing trouble on this issue, I'll stick to 4.6 for the moment. That makes no sense to me, BDB isn't communicating at the network level... Everything at that level is LDAP protocol. --Quanah -- Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration

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Re: (ITS#5831) Replication unreliable
by quanah＠zimbra.com 28 Nov '08

28 Nov '08

--On November 27, 2008 11:08:43 AM +0000 nils.hammar(a)cybercomgroup.com wrote: > Right now I'm using BDB 4.6.21, since I wasn't able at all to make BDB > 4.7.25 (with patch) to work. Not even "make test" succeded with the first > test, it just hung. (which is another problem, probably not related to > this problem) Did you also patch BDB 4.7 with the patch included in the OpenLDAP/build directory distributed with the source? It's necessary on some servers. It would be nice if Oracle would release it. --Quanah -- Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration

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RE: (ITS#5832) Networking and Replication.
by Nils.Hammar＠cybercomgroup.com 27 Nov '08

27 Nov '08

------=_NextPart_000_0029_01C950A1.DC1D8A50 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Further investigation into this issue seems to indicate that the problem is more related to the Berkeley DB 4.7.25 database than it is related to OpenLDAP itself. Sorry for causing trouble on this issue, I'll stick to 4.6 for the moment. ------=_NextPart_000_0029_01C950A1.DC1D8A50 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIL+jCCAj0w ggGmAhEAzbp/VvDf5LxU/iKss3KqVTANBgkqhkiG9w0BAQIFADBfMQswCQYDVQQGEwJVUzEXMBUG A1UEChMOVmVyaVNpZ24sIEluYy4xNzA1BgNVBAsTLkNsYXNzIDEgUHVibGljIFByaW1hcnkgQ2Vy dGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNOTYwMTI5MDAwMDAwWhcNMjgwODAxMjM1OTU5WjBfMQsw CQYDVQQGEwJVUzEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xNzA1BgNVBAsTLkNsYXNzIDEgUHVi bGljIFByaW1hcnkgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkwgZ8wDQYJKoZIhvcNAQEBBQADgY0A MIGJAoGBAOUZv22jVmEtmUhx9mfeuY3rt56GgAqRDvo4Ja9GiILlc6igmyRdDR/MZW4MsNBWhBiH mgabEKFz37RYOWtuwfYV1aioP6oSBo0xrH+wNNePNGeICc0UEeJORVZpH3gCgNrcR5EpuzbJY1zF 4Ncth3uhtzKwezC6Ki8xqu6jZ9rbAgMBAAEwDQYJKoZIhvcNAQECBQADgYEATD+4i8Zo3+5DMw5d 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(ITS#5832) Networking and Replication.
by nils.hammar＠cybercomgroup.com 27 Nov '08

27 Nov '08

Full_Name: Nils Hammar Version: 2.4.13 OS: CentOS 5.2 URL: Submission from: (NULL) (194.17.253.72) When running syncrepl between two nodes in MirrorMode the communication works as it should until there is a disturbance on the network stack on either node. This is applicable to Linux where iptables is used to filter traffic. Example: Node A and B are running and updates on A are replicated to B. An update is done on iptables on B and the iptables is reloaded through "/etc/init.d/iptables restart". Any further updates on A are no longer replicated to B until the slapd service is restarted on B. So it seems to me that there is no 'keep alive' or similar functionality in the networking that catches this kind of situation.

1 0

(ITS#5831) Replication unreliable
by nils.hammar＠cybercomgroup.com 27 Nov '08

27 Nov '08

Full_Name: Nils Hammar Version: 2.4.13 OS: CentOS 5.2 URL: http://www.bedug.com/pics/openldap/nils-hammar-081127.tgz Submission from: (NULL) (194.17.253.72) OpenLDAP 2.4.13 has caused me some problems. It doesn't work reliable when I try to set up MirrorMode replication following the example given in the documentation at http://www.openldap.org/doc/admin24/replication.html#MirrorMode What I do is to set up one node first using the setup in files found at: http://www.bedug.com/pics/openldap/nils-hammar-081127.tgz, then I import an LDIF file containing the data there. All is well so far, and then I start the second node (which is having a completely uninitialized database), and it starts to communicate with the node where I imported the LDIF file, but it soon "hangs" and no further progress is made. It doesn't seem to replicate any data at all. Using 2.4.12 everything works as I expect it to - the second node builds a mirror of the first. Right now I'm using BDB 4.6.21, since I wasn't able at all to make BDB 4.7.25 (with patch) to work. Not even "make test" succeded with the first test, it just hung. (which is another problem, probably not related to this problem)

1 0

Re: (ITS#5640) slapd scans too many objects at startup
by ali.pouya＠free.fr 26 Nov '08

26 Nov '08

Howard Chu wrote : >You said you pulled from HEAD on November 3, and still saw the problem. Either >your checkout was wrong, or your configuration was wrong, because the fix was >definitely present in HEAD by then. Hi Howard, This time I downloaded the release 2.4.13 and ran several tests with my collegues. I send the results for your information : Let two mirror servers A and B. The server A is the main one on which we do usually the write operations and B is the fail-over mirror. We initiate the directory at the time t0 and do all write operations on A. At the time t1 we do only one write on B. Then we resume write operations on A. At t2 we stop B for a cold backup and do one write operation on A. After B startup, A scans internally all objects writtent after t1, checking for the attributes objectclass and entryCSN. If we do a similar operation (write on A while B stopped) at t3, then after startup again all objects written after t1 and up to t3 are scanned (so more and more objects in the directory lifetime). The behaviour of the server B seems OK (it does not scans objects). This situation is produced if we set "syncprov-nopresent TRUE" on both servers. Otherwise (without this directive) the server A scans the objects twice : 1) Once ALL directory objects, checking for their objectclass only, 2) A second time the objects written after t1, checking for objectclass and entryCSN. On the other hand the server B scans the objects writtent before t1 ! I do not know slapd and syncprov internals but I think that if at each startup only the biggest contextCSN values of the servers were compared, the most recent objects would be checked (only one object in our example). But may be this is not feasible for technical reasons that I ignore ? Thanks for your patience Best Regards Ali

1 0

Re: (ITS#5829) Missing moduleload doc. confusing chain/distproc/slapi.
by hyc＠symas.com 25 Nov '08

25 Nov '08

h.b.furuseth(a)usit.uio.no wrote: > Full_Name: Hallvard B Furuseth > Version: HEAD > OS: > URL: > Submission from: (NULL) (129.240.6.233) > Submitted by: hallvard > > > slapd.conf(5)'s moduleload description should say which filename a > module has: foo.so or foo.la. (Or worse - is that different on > different OSes? Windows, anyone?) "foo.la" will work on all platforms. The actual shared object that the .la file points to may have different naming conventions on different platforms. > It should say where the standard installed modules are found. > Also that is a default modulepath which as far as I can tell from > strace includes the standard installation directory and the system > loader's standard load path. And again, is it OS-dependent? It > uses libtool's lt_dlopenext(), I haven't looked for what it does yet. I would expect that of course yes, the system loader's standard path is OS-dependent. > slapd.plugin(5) should mention that slapi itself is a module which > may need to be loaded. And that it's "slapi.la", not "plugin.la". > The chain and distproc overlays are not found in<overlay>.la but in > back_ldap.la. This should be documented. I suggest a "moduleload > back_ldap.la" statement before all the other directives, with > explanation. > > However, even if documented, people will miss that. One does't look > for doc about what one already "knows". > > The simplest and maybe most informative fix would be to add dummy > modules which simply give an error message that the overlays are found > in the back_ldap module. When the software knows exactly what must be done, failing with an error message is just annoying. If we were to do anything here at all, dummy modules would better be replaced by symlinks to the actual module, so that It Just Works. But I think just noting the discrepancy in the documentation is sufficient. > An alternative would be to move them to separate modules which depend on > back-ldap - and document their dependency on back-ldap. More correct I > guess, but personally I don't see how it's an improvement. That might > just be because I have had little to do with maintaining binary > distributions though. I don't think it's an improvement either. > A third would be to store a module registry where module names are > mapped to one or more module filenames to load. Overkill? More > general, but also more complex. Yes, overkill. And there are probably more modules out there than we would ever know about for a registry, so ultimately not useful. -- -- 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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Re: (ITS#5818) Limits chapter for Admin Guide
by ghenry＠OpenLDAP.org 25 Nov '08

25 Nov '08

----- "andrew findlay" <andrew.findlay(a)skills-1st.co.uk> wrote: > Full_Name: Andrew Findlay > Version: HEAD > OS: Linux > URL: > ftp://ftp.openldap.org/incoming/andrew-findlay-limits.sdf-20081118 > Submission from: (NULL) (88.97.25.132) > > > The Admin Guide says very little about size limits and time limits. > I have supplied a chapter to remedy the lack: I suggest putting it in > after the > Access Control chapter: > > ftp://ftp.openldap.org/incoming/andrew-findlay-limits.sdf-20081118 > > Please check the section on limits for paged results extra carefully. > I found the definition in slapd.conf(5) a little ambiguous. > > I have also provided patches to the master sdf file and to the two > config > directive > chapters: > > ftp://ftp.openldap.org/incoming/andrew-findlay-limits-patch-20081118 > > Andrew I've read through and made certain changes to fit our style, but nothing major and committed. Thanks Andrew! Gavin. -- Kind Regards, Gavin Henry. OpenLDAP Engineering Team. E ghenry(a)OpenLDAP.org Community developed LDAP software. http://www.openldap.org/project/

1 0

(ITS#5829) Missing moduleload doc. confusing chain/distproc/slapi.
by h.b.furuseth＠usit.uio.no 25 Nov '08

25 Nov '08

Full_Name: Hallvard B Furuseth Version: HEAD OS: URL: Submission from: (NULL) (129.240.6.233) Submitted by: hallvard slapd.conf(5)'s moduleload description should say which filename a module has: foo.so or foo.la. (Or worse - is that different on different OSes? Windows, anyone?) It should say where the standard installed modules are found. Also that is a default modulepath which as far as I can tell from strace includes the standard installation directory and the system loader's standard load path. And again, is it OS-dependent? It uses libtool's lt_dlopenext(), I haven't looked for what it does yet. slapd.plugin(5) should mention that slapi itself is a module which may need to be loaded. And that it's "slapi.la", not "plugin.la". The chain and distproc overlays are not found in <overlay>.la but in back_ldap.la. This should be documented. I suggest a "moduleload back_ldap.la" statement before all the other directives, with explanation. However, even if documented, people will miss that. One does't look for doc about what one already "knows". The simplest and maybe most informative fix would be to add dummy modules which simply give an error message that the overlays are found in the back_ldap module. An alternative would be to move them to separate modules which depend on back-ldap - and document their dependency on back-ldap. More correct I guess, but personally I don't see how it's an improvement. That might just be because I have had little to do with maintaining binary distributions though. A third would be to store a module registry where module names are mapped to one or more module filenames to load. Overkill? More general, but also more complex.

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openldap-bugs November 2008