Creating and Configuring Data Views for Example Use Cases

This section contains the following information about data views and how to create and configure them:

• Data Views That Provide a Single Point of Access When Different Parts of a Subtree Are Stored in Different Data Sources

• Data Views With Hierarchy and a Distribution Algorithm

The examples in this section assume that the connection handler allows all client connections to be processed by Directory Proxy Server.

Data Views That Provide a Single Point of Access When Different Parts of a Subtree Are Stored in Different Data Sources

This section describes how to configure a data view that provides a single point of access to different parts of a subtree. This example contains two data views with the same base DN. A numeric distribution algorithm is used to separate entries into different data views. A data source pool is configured for each set of data-equivalent data sources. The following figure shows the example deployment.

For information about this type of deployment, see Data Views to Route Requests When Different Parts of a Subtree Are Stored in Different Data Sources in Sun Directory Server Enterprise Edition 7.0 Reference.

Figure 21–1 Sample Deployment That Provides a Single Point of Access When Different Parts of a Subtree Are Stored in Different Data Sources

To Configure Data Views That Provide a Single Point of Access When Different Parts of a Subtree Are Stored in Different Data Sources

You can use DSCC to perform this task. For information, see Directory Service Control Center Interface and the DSCC online help.

1. Create a data source for each LDAP server as described in Creating and Configuring LDAP Data Sources.

2. Create two data source pools as described in Creating and Configuring LDAP Data Source Pools.

3. Attach the data sources that contain one part of the subtree to data-source-pool-1, and the data sources that contain the other part of the subtree to data-source-pool-2, as described in Attaching LDAP Data Sources to a Data Source Pool.

4. (Optional) Configure load balancing.

   For information, see Configuring Load Balancing.

5. Create a data view with a distribution algorithm to select entries in ou=people,dc=example,dc=com with uid between 0 and 99, and configure the data view to direct requests to data-source-pool-1.

   $ dpconf set-ldap-data-view-prop -h host1 -p 1389 dataview-1 \ ldap-data-source-pool:data-source-pool-1 base-dn:ou=people,dc=example,dc=com \ distribution-algorithm :numeric numeric-attrs:uid numeric-lower-bound :0 \ numeric-upper-bound :99

6. Create another data view with a distribution algorithm to select entries in ou=people,dc=example,dc=com with uid between 100 and 199, and configure the data view to direct requests to data-source-pool-2.

   $ dpconf set-ldap-data-view-prop -h host1 -p 1389 dataview-2 \ ldap-data-source-pool:data-source-pool-2 base-dn:ou=people,dc=example,dc=com \ distribution-algorithm:numeric numeric-attrs:uid numeric-lower-bound:100 numeric-upper-bound :199

   The other properties of the data views are the same as the default data view in Default Data View.

7. If necessary, restart the instance of Directory Proxy Server for the changes to take effect.

   For information about restarting Directory Proxy Server, see To Restart Directory Proxy Server.

Data Views With Hierarchy and a Distribution Algorithm

This section describes how to configure a data view to combine hierarchy with distribution algorithms. For information about this type of deployment, see Data Views With Hierarchy and a Distribution Algorithm in Sun Directory Server Enterprise Edition 7.0 Reference.

The example in this section contains four data views. The base DN of data view 1 is superior to the base DNs of the other data views. Data view 3 and data view 4 have the same base DN, but a numeric distribution algorithm separates the entries into different data views.

Directory Proxy Server automatically excludes a subordinate branch of a subtree from a data view when the subordinate branch is configured as the base DN of a separate data view. A numeric distribution algorithm separates entries from the same subtree into different data views. A data source pool is configured for each set of data-equivalent data sources.

The following figure shows the example deployment.

Figure 21–2 Sample Data View With Hierarchy and a Distribution Algorithm

To Configure Data Views With Hierarchy and a Distribution Algorithm

You cannot use DSCC to perform this task. Use the command line, as described in this procedure.

1. Create a data source for each LDAP server as described in Creating and Configuring LDAP Data Sources.

2. Create four data source pools as described in Creating and Configuring LDAP Data Source Pools.

3. Attach the data sources to the data source pools by following the instructions in Attaching LDAP Data Sources to a Data Source Pool.

   • Attach the data sources that contain dc=example,dc=com to data-source-pool-1.

   • Attach the data sources that contain ou=computer,dc=example,dc=com to data-source-pool-2.

   • Attach the data sources that contain entries in ou=people,dc=example,dc=com with uid between 0 and 99 to data-source-pool-3.

   • Attach the data sources that contain entries in ou=people,dc=example,dc=com with uid between 100 and 199 to data-source-pool-4.

4. (Optional) Configure load balancing.

   For information, see Configuring Load Balancing.

5. Create a data view with a base DN at dc=example,dc=com, that refers to data-source-pool-1.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-1 \ data-source-pool-1 dc=example,dc=com

6. Create a data view with a base DN at ou=computer,dc=example,dc=com that refers to data-source-pool-2.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-2 \ data-source-pool-2 ou=computer,dc=example,dc=com

7. Create a data view with a base DN at ou=people,dc=example,dc=com that refers to data-source-pool-3. Configure a distribution algorithm on the data view to select entries with uid between 0 and 99.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-3 \ data-source-pool-3 ou=people,dc=example,dc=com $ dpconf set-ldap-data-view-prop dataview-3 distribution-algorithm:numeric \ numeric-attrs:uid numeric-lower-bound:0 numeric-upper-bound:99

8. Create a data view with a base DN at ou=people,dc=example,dc=com that refers to data-source-pool-4, and configure a distribution algorithm on the data view to select entries with uid between 100 and 199.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-4 \ data-source-pool-4 ou=people,dc=example,dc=com $ dpconf set-ldap-data-view-prop dataview-4 distribution-algorithm:numeric \ numeric-attrs:uid numeric-lower-bound:100 numeric-upper-bound:199

9. Verify that the subtrees ou=computer,dc=example, dc=com and ou=people,dc=example, dc=com have been excluded from dataview-1 by looking at the excluded-subtrees parameter.

   $ dpconf get-ldap-data-view-prop -h host1 -p 1389 dataview-1 excluded-subtrees

   The list of excluded subtrees is returned.

10. Restart the instance of Directory Proxy Server for the changes to take effect.

    For information about restarting Directory Proxy Server, see To Restart Directory Proxy Server.