Re: cn=config and DB_CONFIG

2010-05-20 Thread Howard Chu 

Hallvard B Furuseth wrote:

DT Piotr Wadas writes:

Is it possible with openldap, any version, to tune DB_CONFIG attributes
for selected context via cn=config ?


Yes.  See the admin guide and the slapd-bdb(8) manpage, keyword
dbconfig.  The cn=config attribute is called olcDbConfig.  Note that
"The options set using this directive will only be written to the
DB_CONFIG file if no such file existed at server startup time"
Come to think of it, I don't know what happens if you modify an existing
database's DB_CONFIG; I've only used it with empty database directories.


If you ldapmodify via cn=config the DB environment will be closed and 
re-opened to make the new settings take effect.


--
  -- Howard Chu
  CTO, Symas Corp.   http://www.symas.com
  Director, Highland Sun http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/

Re: cn=config and DB_CONFIG

2010-05-20 Thread Daniel 

DT Piotr Wadas wrote:

Is it possible with openldap, any version, to tune DB_CONFIG attributes
for selected context via cn=config ?
  


Although I don't know in detail if and when these kind of cn=config 
settings will take effect (especially for changes), it seems to be 
supported:


Have a look at admin guide 2.4 and olcDBConfig attribute:
http://www.openldap.org/doc/admin24/slapdconf2.html#BDB%20and%20HDB%20Database%20Directives


BTW: Could someone confirm, that a slaptest -f -F conversion does not 
effect (aka ignores) slapd's bdb DB_CONFIG convenience settings like for 
example:


dbconfigset_cachesize 0 5 4
dbconfigset_lg_dir /extra/harddrive4performace
dbconfigset_lg_regionmax 500
dbconfigset_lg_bsize 500
dbconfigset_lg_max 2500
dbconfigset_flags DB_LOG_AUTOREMOVE


In my case the above settings are contained in a "database hdb" section 
and although slaptest -f succeeds after running slaptest -f ... -F ... 
slapd.d's ldifs do not contain any olcDBConfig attribute.


Thanks!

Cheers
Daniel

Re: cn=config and DB_CONFIG

2010-05-19 Thread Quanah Gibson-Mount 
--On Wednesday, May 19, 2010 3:56 PM +0200 Hallvard B Furuseth 
 wrote:



DT Piotr Wadas writes:

Is it possible with openldap, any version, to tune DB_CONFIG attributes
for selected context via cn=config ?


Yes.  See the admin guide and the slapd-bdb(8) manpage, keyword
dbconfig.  The cn=config attribute is called olcDbConfig.  Note that
   "The options set using this directive will only be written to the
   DB_CONFIG file if no such file existed at server startup time"
Come to think of it, I don't know what happens if you modify an existing
database's DB_CONFIG; I've only used it with empty database directories.


It will pull in the changes the next time slapd is started.

--Quanah

--

Quanah Gibson-Mount
Principal Software Engineer
Zimbra, Inc

Zimbra ::  the leader in open source messaging and collaboration

Re: cn=config and DB_CONFIG

2010-05-19 Thread Hallvard B Furuseth 
DT Piotr Wadas writes:
> Is it possible with openldap, any version, to tune DB_CONFIG attributes
> for selected context via cn=config ?

Yes.  See the admin guide and the slapd-bdb(8) manpage, keyword
dbconfig.  The cn=config attribute is called olcDbConfig.  Note that
   "The options set using this directive will only be written to the
   DB_CONFIG file if no such file existed at server startup time"
Come to think of it, I don't know what happens if you modify an existing
database's DB_CONFIG; I've only used it with empty database directories.

-- 
Hallvard

Re: cn=config and DB_CONFIG

2010-05-19 Thread Howard Chu 

DT Piotr Wadas wrote:


Hello,
Is it possible with openldap, any version, to tune DB_CONFIG attributes
for selected context via cn=config ?


Every version since 2.3.

--
  -- Howard Chu
  CTO, Symas Corp.   http://www.symas.com
  Director, Highland Sun http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/