Hello,

thanks a lot for your support on this topic. Both inputs from Howard and Pierangelo were really helpful.

With the additional config tweak it works properly. So far I tested search and delete operations successfully. Other tests to follow ...

Regards

Wolfgang Hummel

-----Original Message----- From: Hummel, Wolfgang Sent: Dienstag, 23. April 2013 18:10 To: 'openldap-technical@openldap.org' Subject: slapd-meta as a proxy for a monolithic namespace

Hello OpenLDAP community,

we are currently planning for a largescale directory with

1 Bio. entries in a single namespace.

The idea is to divide the DB in 10 equal sized DBs and let them access by slapd-meta proxies.

Example: dn: ou=rsp1,c=de,o=mno entries with uid=79101234567890, 79101234567891 etc. 791 is always fix

In our scenario each server would have 100 Mio. entries using the last digit of uid as a naturally even balanced distribution mechanism.

Here are the questions:

- is slapd-meta a feasible approach for this scenario ? - how could the slapd.conf for the proxy look like ?

Here is a (non working) example with 2 backend servers. What is wrong about it ? ... moduleload back_meta moduleload back_ldap ... ####################################################################### # Meta database ####################################################################### database meta suffix " ou=rsp1,c=de,o=mno" dncache-ttl forever lastmod off rootdn "cn=admin,ou=rsp1,c=de,o=mno" rootpw secret network-timeout 1 uri "ldap://10.11.12.170/ ou=rsp1,c=de,o=mno" rewriteEngine on #rewriteContext searchFilterAttrDN rewriteContext searchFilter rewriteRule '^uid=[0-9]{11}1,.*' 'ldap://10.11.12.170/%0' ':@' uri "ldap://10.11.12.180/ ou=rsp1,c=de,o=mno" rewriteEngine on #rewriteContext searchFilterAttrDN rewriteContext searchFilter rewriteRule '^uid=[0-9]{11}2,.*' 'ldap://10.11.12.180/%0' ':@' ...