Optimizing 5.0 to 6.0 LDAP upgrade

Revision as of 22:58, 18 May 2009 by CAH (talk | contribs) (added article footer and category)

LDAP customization

Pre-upgrade tuning

When upgrading from ZCS 5.0.x to ZCS 6.0.x, the LDAP database is exported and then re-imported as the OpenLDAP and underlying database software have changed versions, requiring that this be done. It is possible to optimize this process by increasing the resources available to OpenLDAP to perform this task before starting the upgrade. The primary way of doing this is to increase the number of threads slapadd can have available to it for indexing while importing the new database. To modify the default value from 1 to the number of real cores on your server, do the following. This example assumes you have 8 real cores available (4 dual core cpus, for example):

#Install 6.0 software only
./install.sh -s
# When this finishes, we want to update the olcToolThreads value
cd /opt/zimbra/openldap/etc/openldap/config
# Edit cn=config.ldif, and replace the value for olcToolThreads
olcToolThreads: 8

You will also want to ensure you have a correctly customized DB_CONFIG file. It is advised to have this configured pre-upgrade. This is documented at Managing_Customized_BDB_configurations

Extra schema migration

Verified Against: Zimbra Collaboration Suite 6.0 Date Created: 5/2/2007
Article ID: https://wiki.zimbra.com/index.php?title=Optimizing_5.0_to_6.0_LDAP_upgrade Date Modified: 2009-05-18

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