Howard Chu wrote:
Oren Laadan wrote:
Howard Chu wrote:
This discussion has wandered off of potential bugs and into regular software usage. You should pick this up again on the -software mailing list. This ITS will be closed.
Well, the fact is that as far as I can tell the meta-URIs are not mis-configured, the server works well for some random amount of time and then reaches a lockup. True, the configuration isn't the optimal in terms of performance. However, in the absence of text in the man pages that prohibits doing so, the observed behavior is buggy.
In fact, there is at least one example in the archives of -software that discusses a deployment of meta with "uri ldap://localhost/" that seems to have gone ok without too much criticism: http://www.openldap.org/lists/openldap-software/200301/msg00112.html)
The URIs in that example clearly do not overlap with the actual meta database. It's also not stated in the example, but it's most likely that that example is directing queries to a separate slapd process. In your config, your URIs clearly *do* overlap with your meta database, which guarantees an infinite loop.
True. The guy is merging three subtrees into a single tree to a common root, while I try to merge two database that into the exact same DN.
To that I'll add, that to the best of my knowledge and after reading and re-reading the docs and the man-pages, I cannot find another way to merge two databases (not distinct subtrees) such that a local db adds entries to a remote db, but to use meta.
You haven't provided any information to explain why you cannot structure your additional entries as a distinct subtree. You're still just handwaving when we ask for concrete examples of the entries involved.
Clearly I'm new to LDAP. Please indicate what information is missing, I'll be happy to provide, even the local database (my .ldif file) and sample queries from the remote server. Just name it.
Taking a step back: we have a departmental LDAP server for user auth, (posix) groups, autofs maps and so on. In my group, we add to the DB groups and autofs maps that do not exist on the remote server, so a user on our machines can belong to additional groups.
I am not arguing that I cannot structure it differently. I simply do not know if I can structure it differently. Ideally I could add entries to the remote database, but that is impossible. The remote server gives DN dc=MAIN,dc=EXAMPLE,dc=COM, which is what I made the local server give (via the meta backend) and which is what the clients are using as their base DN.
The local database (.ldif file) currently looks like this, in this example adding the group LOCAL_GRP with user USER1 USER2 (there are more entries, also for autofs maps, but I think this explains the idea).
# root/base dn: dc=ABC,dc=MAIN,dc=EXAMPLE,dc=COM dc: EXAMPLE objectClass: top objectClass: domain # group subtree dn: ou=Group,dc=ABC,dc=MAIN,dc=EXAMPLE,dc=COM ou: Group objectClass: top objectClass: organizationalUnit # specific group information dn: cn=LOCAL_GRP,ou=Group,dc=ABC,dc=MAIN,dc=EXAMPLE,dc=COM cn: LOCAL_GRP objectClass: posixGroup objectClass: uidObject gidNumber: 1000 memberUid: USER1 memberUid: USER2 uid: root
The best of your knowledge clearly didn't get you very far or you wouldn't have been asking for help in the first place. For you to second-guess the folks trying to help you and omit the information requested really isn't very productive.
No need to make it a personal. I'm new to LDAP, but not clueless either. I truly appreciate the time and efforts that you guys are putting into this issue (and ldap in general). I only omit information because I'm not aware of its importance to you. It helps if you indicate what's missing, and I'll provide promptly, as I've been doing so far.
So: the config seems fine (see the original ticket), I need to use meta, but it exhibits random lockups. Using a suboptimal solution is not a bug. Random lockups are a symptom of a bug :(
No. Lockups due to thread exhaustion are a symptom of a bad configuration.
I then suggest that this specific issue be mentioned in the ldap-meta man-page (as it is now, it doesn't read so), for the sake of others.
(That said, I will ask on the -software list with regard to alternative configurations, as you suggest).
(also sent a message to the -software list as you suggested; made it with shorted DN for simplicity)
Thanks,
Oren.