4. Optional: Changing the Default Ambari Server Port

By default, Ambari Server uses port 8080 to access the Ambari Web UI and the REST API. To change the port number, you must edit the Ambari properties file.

	Important
	Ambari Server should not be running when you change port numbers. Edit `ambari.properties` before you start Ambari Server the first time or stop Ambari Server before editing properties.

On the Ambari Server host, open /etc/ambari-server/conf/ambari.properties with a text editor.
Add the client API port property and set it to your desired port value:
```
client.api.port=<port_number>
```
Start or re-start the Ambari Server. Ambari Server now accesses Ambari Web via the newly configured port:
```
http://{your.ambari.server}:<port_number>
```

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