Sun Microsystems 8190994 Monitoring Backend Servers, Enterprise Edition 6.0 Administration Guide

Mapping the Properties Configuration

load balancing only, that is, each LDAP server is allotted a certain percentage of the total load. The ids-proxy-sch-LoadBalanceProperty object class has one attribute, ids-proxy-con-Server, whose value has the following syntax:

server-name[#percentage]

In Iplanet Directory Access Router 5.0 (IDAR) these configuration attributes are stored under ids-proxy-con-Name=load-balance,ou=properties,ou=pd2,ou=iDAR,o=services. In Directory Proxy Server 5.2, these configuration attributes are stored under

ids-proxy-con-name=load-balancing-1,ou=properties,cn=user-defined-name,ou=dar-config,o=Netsc

In Directory Proxy Server 6.0, load balancing is configured as a property of a data source pool. A data source pool is essentially a collection of LDAP servers to which Directory Proxy Server can route requests. For information about setting up a data source pool, see “Creating and Configuring LDAP Data Source Pools” in Sun Java System Directory Server Enterprise Edition 6.0 Administration Guide. For a list of properties associated with a data source pool, run the following command:

$ dpconf help-properties grep ldap-data-source-pool

Directory Proxy Server 6.0 supports proportional load balancing but also supports additional load balancing algorithms. To configure proportional load balancing, set the property of the data source pool as follows:

$ dpconf set-ldap-data-source-pool-prop data-source-pool-nameload-balancing-algorithm:proportional

The percentage of load allotted to each server is configured by setting various properties of an attached data source. An attached data source is a data source that has been attached to a specific data source pool. To configure proportional load, set the weight properties of the attached data source for each operation type as follows:

$dpconf set-attached-ldap-data-source-propdata-source-pool-name attached-data-source-name add-weight:value

bind-weight:value

compare-weight:value

delete-weight:value

modify-dn-weight:value

modify-weight:value

search-weight:value

For more information, see “Configuring Load Balancing” in Sun Java System Directory Server

Enterprise Edition 6.0 Administration Guide.

Monitoring Backend Servers

To monitor the state of its backend LDAP servers, Directory Proxy Server 5 performs an anonymous search operation on the RootDSE of each server every ten seconds. Directory Proxy

100 Sun Java System Directory Server Enterprise Edition 6.0 Migration Guide • March 2007

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