Configuring the HDP cluster

You need to configure the HDP cluster before you dump workload data that you want to replicate on CDP.

Prepare a cron script to set policies for chained REPL DUMP commands and to control execution, for example to run at a certain time.

In new and existing databases, include the repl.source.for property in the source database dbproperties file.
Set the repl.source.for property value using the following format:
```
'repl.source.for' = [****policy1 name***, ****policy2 name***, ****policy3 name***]                                 
```
For example, to create a new source database for policies named 1, 2, and 3, configure the source database properties file as follows:
```
‘repl.source.for' = '1, 2, 3'             
```
For example, to configure an existing source database named testdb, run the following command:
```
ALTER DATABASE testdb SET
DBPROPERTIES('repl.source.for'=[****policy1 name, policy2 name,
policy3 name***]');                  
```
On the HDP cluster, configure the mandatory HDP cluster configuration properties listed in the next topic.
Run the REPL DUMP command along the mandatory policy-level configuration parameters using a cron script.
Use the following command syntax:
```
[***cron syntax for regular intervals***] beeline -u jdbc:hive2://[***source database***] hive
-e"repl dump [***source database***] with [***mandatory policy-level configuration
parameters separated by comma***]
```
See the Cron Expression Generator & Explainer website.