2. Configure HDP

	Note
	If you are using an Ambari-managed cluster, use Ambari to update the Service configurations (core-site.xml, mapred-site.xml, webhbcat-site.xml and oozie-site.xml). Do not edit the configuration files directly and use Ambari to start and stop the services.

Modify the core-site.xml file.

On the NameNode, Secondary NameNode, and all the DataNodes, add the following properties to the $HADOOP_CONF_DIR/core-site.xml file.

where $HADOOP_CONF_DIR is the directory for storing the Hadoop configuration files. For example, /etc/hadoop/conf.

<property>
  <name>hadoop.proxyuser.hue.hosts</name>
  <value>*</value>
</property>

<property>
  <name>hadoop.proxyuser.hue.groups</name>
  <value>*</value>
</property>

<property>
<name>hadoop.proxyuser.hcat.groups</name>
<value>*</value>
</property>

<property>
<name>hadoop.proxyuser.hcat.hosts</name>
<value>*</value>
</property>

Modify the webhcat-site.xml file. On the WebHCat Server host, add the following properties to the $WEBHCAT_CONF_DIR/webhcat-site.xml Where $WEBHCAT_CONF_DIR is the directory for storing WebHCat configuration files. For example, /etc/webhcat/conf.
```
vi $WEBHCAT_CONF_DIR/webhcat-site.xml
```
```
<property>
  <name>webhcat.proxyuser.hue.hosts</name>   
  <value>*</value> 
</property> 
```
```
<property>   
  <name>webhcat.proxyuser.hue.groups</name>  
  <value>*</value>
</property> 
```
Modify the oozie-site.xml file. On the Oozie Server host, add the following properties to the $OOZIE_CONF_DIR/oozie-site.xml Where $OOZIE_CONF_DIR is the directory for storing Oozie configuration files. For example, /etc/oozie/conf.
```
vi $OOZIE_CONF_DIR/oozie-site.xml
```
```
<property>
  <name>oozie.service.ProxyUserService.proxyuser.hue.hosts</name>
  <value>*</value>
</property> 
```
```
<property>   
  <name>oozie.service.ProxyUserService.proxyuser.hue.groups</name>
  <value>*</value> 
</property> 
```
Stop the NameNode by running the following command:
```
/usr/lib/hadoop/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR stop namenode
```
Where $HADOOP_CONF_DIR is the directory for storing the Hadoop configuration files. For example, /etc/hadoop/conf