Re: large ldap server recommendation

[ram <ram@netcore.co.in>]

On Fri, 2008-02-01 at 06:13 +0100, Tony Earnshaw wrote:
> ram skrev, on 31-01-2008 11:13:
> 
> >   I am using ldap for authentication & addressbook  for a large
> > mailserver setup with around 300k users  ( this will grow to 500k )
> > 
> > The ldap server is a 8GB Ram box with RHEL-5 with
> > openldap-servers-2.3.27-5
> > 
> > I am confused what database type to use ldbm or bdb. Currently I have
> > the users on bdb with lot of problems. The ldap server dies all of a
> > sudden and I have to recover the data to get it started 
> > 
> > 
> > my DB_CONFIG file is 
> > 
> > ------
> > 
> > 
> > 
> > # Note: most DB_CONFIG settings will take effect only upon rebuilding
> > # the DB environment.
> > 
> > set_cachesize   0      524288000        0
> > set_lg_regionmax        1048576
> > set_lg_max              10485760
> > set_lg_bsize            20485760
> > set_tmp_dir             /tmp
> > 
> > 
> > # Note: special DB_CONFIG flags are no longer needed for "quick"
> > # slapadd(8) or slapindex(8) access (see their -q option).
> > 
> > set_flags DB_LOG_AUTOREMOVE
> > set_flags DB_LOG_INMEMORY
> > set_flags DB_TXN_NOSYNC
> 
> This has been repeated to the point of boredom, nevertheless:
> 
> I'm a Red Hat admin and am running RHEL5.1 on a number of machines. 
> RHEL5 is a dependable and stable operating system, as are by far most of 
> the utilities it comprises. One RHEL5 offering to be avoided at all 
> costs is openldap-*-2.3.27. Apart from anything else it is built with 
> bdb 4.3.29 support. db4.3 has been condemned as unsuitable by the 
> OpenLDAP developers. There are other reason too, but this is the most 
> important.
> 
> I (and other Red Hat admins in the know) run Buchan Milne's alternative 
> which comprise discrete, patched db-4.2.52 and can exist beside the 
> RHEL5 offering. This is an utterly stable and dependable product; it is 
> available at http://staff.telkomsa.net/packages/rhel5Server/openldap/.
> 

Will I have to remove my current db4* rpms to install these ? 




> You should always use bdb or hdb as DB, never ldbm.
> 
> Best,
> 
> --Tonni
>