Chapter 8. Assigning a Puppet class to an individual host

Procedure

In the Satellite web UI, navigate to Hosts > All Hosts.
Locate the host you want to add the ntp Puppet class to and click Edit.
Select the Puppet ENC tab and look for the ntp class.
Click the + symbol next to ntp to add the ntp submodule to the list of included classes.
Click Submit to save your changes.
Tip
If the Puppet classes tab of an individual host is empty, check if it is assigned to the proper Puppet environment.
Verify the Puppet configuration.
1. Navigate to Hosts > All Hosts and select the host.
2. From the top overflow menu, select Legacy UI.
3. Under Details, click Puppet YAML. This produces output similar as follows:
```
---
parameters:
  // shortened YAML output
classes:
  ntp:
    servers: '["0.de.pool.ntp.org","1.de.pool.ntp.org","2.de.pool.ntp.org","3.de.pool.ntp.org"]'
environment: production
...
```
Verify the ntp configuration.
Connect to your host using SSH and check the content of /etc/ntp.conf.
This example assumes your host is running CentOS 7. Other operating systems may store the ntp config file in a different path.
Tip
You may need to run the Puppet agent on your host by executing the following command:
```
# puppet agent -t
```

Running the following command on the host checks which ntp servers are used for clock synchronization:

# cat /etc/ntp.conf

This returns output similar as follows:

# ntp.conf: Managed by puppet.
server 0.de.pool.ntp.org
server 1.de.pool.ntp.org
server 2.de.pool.ntp.org
server 3.de.pool.ntp.org

You now have a working ntp module which you can add to a host or group of hosts to roll out your ntp configuration automatically.