On Wed, Mar 20, 2013 at 2:02 PM, Bernd May
<bernd@net.t-labs.tu-berlin.de> wrote:
Hey,
On 19.03.2013 15:17, brendan kearney wrote:
> i no longer have logs around the failure, but the error message indicated
> that the olcDbDirectory could not be found. the DN dn:
> olcDatabase={2}hdb,cn=config has that specified (olcDbDirectory:
> /var/lib/ldap), but i am missing something about pcache and the backend
> sharing this directive.
AFAIK you are missing a database to store the caching data in. While the
manpages and documentation do make mention of this implicitly, neither
of them states it in an obvious way. Unfortunately even the examples in
the admin guide are a bit misleading because the DNs there do not
reflect the object hierarchy in the config database.
So to solve your problem you will need a second database, that stores
the caching data, e.g.
# your database backend you want to cache for
dn: olcDatabase={2}ldap,cn=config
...
# the pcache overlay
dn: olcOverlay={0}pcache,olcDatabase={2}ldap,cn=config
...
# the pcache overlay db
dn: olcDatabase=hdb,olcOverlay={0}pcache,olcDatabase={2}ldap,cn=config
...
objectClass: olcPcacheDatabase
olcDbDirectory: /var/lib/ldap/pcache
olcDbIndex: pcacheQueryID eq
...
Note also that pcache is meant to increase the performance of ldap and
meta backends. I do not know whether it makes sense or actually works to
cache entries for a mundane hdb database.
hth
--
Technische Universität Berlin - FGINET
Bernd May
System Administration
An-Institut Deutsche Telekom Laboratories
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