ypserv, groups and ndbm

[Rick Stevens]

Waldher, Travis R wrote:
>>-----Original Message-----
>>From: Rick Stevens [mailto:rstevens at vitalstream.com]
>>Sent: Wednesday, May 18, 2005 10:46 AM
>>To: Getting started with Red Hat Linux
>>Subject: Re: ypserv, groups and ndbm
>>
>>Waldher, Travis R wrote:
>>
>>>Ok, we hit a line limitation with NIS, 1024 characters.  This
> 
> problem
> 
>>>first surface with netgroups, then recently with groups.  I've been
>>>searching, discovered this:
>>>
>>>http://supportforum.sun.com/network/index.php?t=msg&goto=484&rid=0
>>>
>>>Is there any way to increase the hash table size to something more
> 
> than
> 
>>>1024?
>>
>>Not really.  That's the internals of ndbm.  If you were to recode NIS
>>to use a different database backend, then you could.
>>
>>You might be able to get around it by using makedbm with the
>>"--no-limit-check" option to create the database file first.  I won't
>>swear to that working, but hey, it's possible.
>>
>>BTW, this is one of the reasons LDAP was created with the RFC2307
>>fields.
> 
> 
> If I were able to build the database files using that option.

Edit /var/yp/Makefile and change the "DBLOAD=" assignment to include
that option, then make the databases as normal.

> For all intensive purposes the clients should have no problem reading
> them?  Or do the clients also use the ndbm database to read the files
> in?

I think you mean "intents and purposes".  ;-)  Anyway, the clients talk
to the server (ypserv) and the server pulls the stuff out of ndbm, so
that's where ndbm gets involved.

> LDAP is an option... and I will begin looking at converting NIS to LDAP.
> But I will hopefully be out of this pit of a place and group and working
> somewhere better before the opportunity to convert would arise.

As I said, I don't know if the makedbm option will do the trick.  I've
never had so many netgroups that the 1024 limit slapped me.  This just
looks like a place to start.
> 
> _______________________________________________
> Redhat-install-list mailing list
> Redhat-install-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-install-list
> To Unsubscribe Go To ABOVE URL or send a message to:
> redhat-install-list-request at redhat.com
> Subject: unsubscribe
> 


-- 
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-      Cuteness can be overcome through sufficient bastardry         -
-                                         --Mark 'Kamikaze' Hughes   -
----------------------------------------------------------------------