Chapter 6. Appendix: Using Custom Hostnames

Use the following instructions to use custom hostnames in your cluster:

On the Install Options screen, select Perform Manual Registration for Ambari Agents.
Install the Agents manually as described in Installing Ambari Agents Manually.
For every host, create a script (for example named /tmp/hostname.sh) to echo the custom name you want to use for that host. For example:
```
#!/bin/sh
echo <ambari_hostname>
```

With a text editor, open /etc/ambari-agent/conf/ambari-agent.ini on every host and add the following information:

Table 6.1. ambari-agent.ini

Section	Value
[server]	Change the hostname to the host for the Ambari Server. This is the server that the Agent registers to.
[agent]	Add this line to the agent section: `hostname_script=/tmp/hostname.sh` (or whatever you have named your script)