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%20Databa...

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:

dbconfig set_cachesize 0 500000000 4 dbconfig set_lg_dir /extra/harddrive4performace dbconfig set_lg_regionmax 5000000 dbconfig set_lg_bsize 5000000 dbconfig set_lg_max 25000000 dbconfig set_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

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.