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1. Removed the "what this affects" section.
2. Made sure each parameter lists a data type and a default value.
3. Made sure the links in the README work and are accurate.
4. Updated the link in the Contributing section to point here:
https://docs.puppetlabs.com/forge/contributing.html
5. Updated the Limitations section to link to the list of supported
platforms.
6. General copyediting.
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@psoloway
psoloway committed Feb 12, 2015
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Expand Up @@ -22,16 +22,9 @@ The ntp module handles installing, configuring, and running NTP across a range o

##Setup

###What ntp affects

* ntp package.
* ntp configuration file.
* ntp service.

###Beginning with ntp

`include '::ntp'` is enough to get you up and running. If you wish to pass in
parameters specifying which servers to use, then:
`include '::ntp'` is enough to get you up and running. If you wish to pass in parameters specifying which servers to use, then:

```puppet
class { '::ntp':
Expand All @@ -41,8 +34,7 @@ class { '::ntp':

##Usage

All interaction with the ntp module can do be done through the main ntp class.
This means you can simply toggle the options in `::ntp` to have full functionality of the module.
All interaction with the ntp module can be done through the main ntp class. This means you can simply toggle the options in `::ntp` to have full functionality of the module.

###I just want NTP, what's the minimum I need?

Expand Down Expand Up @@ -85,7 +77,7 @@ class { '::ntp':

###I only want to listen on specific interfaces, not on 0.0.0.0

Restricting this is especially useful on Openstack nodes which may have numerous virtual interfaces.
Restricting ntp to a specific interface is especially useful on Openstack nodes which may have numerous virtual interfaces.

```puppet
class { '::ntp':
Expand Down Expand Up @@ -139,145 +131,137 @@ class { '::ntp':

###Parameters

The following parameters are available in the ntp module:
The following parameters are available in the `::ntp` class:

####`autoupdate`

**Deprecated:** This parameter determined whether the ntp module should be
automatically updated to the latest version available. Replaced by `package_ensure`.
**Deprecated; replaced by the `package_ensure` parameter**. Tells Puppet whether to keep the ntp module updated to the latest version available. Valid options: 'true' or 'false'. Default value: 'false'

####`config`

Sets the file that ntp configuration is written into.
Specifies a file for ntp's configuration info. Valid options: string containing an absolute path. Default value: '/etc/ntp.conf' (or '/etc/inet/ntp.conf' on Solaris)

####`config_template`

Determines which template Puppet should use for the ntp configuration.
Specifies a file to act as a template for the config file. Valid options: string containing a path (absolute, or relative to the module path). Default value: 'ntp/ntp.conf.erb'

####`disable_monitor`

Disables monitoring of ntp.
Tells Puppet whether to refrain from monitoring the NTP service. Valid options: 'true' or 'false'. Default value: 'false'

####`driftfile`

Sets the location of the drift file for ntp.
Specifies an NTP driftfile. Valid options: string containing an absolute path. Default value: '/var/lib/ntp/drift' (except on AIX and Solaris)

####`iburst_enable`

Set the iburst option in the ntp configuration. If enabled the option is set for every ntp peer.
Specifies whether to enable the iburst option for every NTP peer. Valid options: 'true' or 'false'. Default value: 'false' (except on AIX and Debian)

####`interfaces`

Sets the list of interfaces NTP will listen on. This parameter must be an array.
Specifies one or more network interfaces for NTP to listen on. Valid options: array. Default value: [ ]

####`keys_controlkey`

The key to use as the control key.
Provides a control key to be used by NTP. Valid options: string. Default value: ' '

####`keys_enable`

Whether the ntp keys functionality is enabled.
Tells Puppet whether to enable key-based authentication. Valid options: 'true' or 'false'. Default value: 'false'

####`keys_file`

Location of the keys file.
Specifies an NTP keys file. Valid options: string containing an absolute path. Default value: '/etc/ntp/keys' (except on AIX, SLES, and Solaris)

####`keys_requestkey`

Which of the keys is the request key.

#### `keys_trusted`
Provides a request key to be used by NTP. Valid options: string. Default value: ' '

Array of trusted keys.
#### `keys_trusted`:
Provides one or more keys to be trusted by NTP. Valid options: array of keys. Default value: [ ]

#### `logfile`

Absolute path of the alternate log file. If unspecified, ntp uses syslog by default.
Specifies a log file for NTP to use instead of syslog. Valid options: string containing an absolute path. Default value: ' '

####`package_ensure`

Sets the ntp package to be installed. Can be set to 'present', 'latest', or a specific version.
Tells Puppet whether the NTP package should be installed, and what version. Valid options: 'present', 'latest', or a specific version number. Default value: 'present'

####`package_manage`

Determines whether to manage the ntp package. Defaults to true.
Tells Puppet whether to manage the NTP package. Valid options: 'true' or 'false'. Default value: 'true'

####`package_name`

Determines the name of the package to install.
Tells Puppet what NTP package to manage. Valid options: string. Default value: 'ntp' (except on AIX and Solaris)

####`panic`

Determines if ntp should 'panic' in the event of a very large clock skew.
This defaults to false for virtual machines, as they don't do a great job with keeping time.
Specifies whether NTP should "panic" in the event of a very large clock skew. Valid options: 'true' or 'false'. Default value: 'true' (except on virtual machines, where major time shifts are normal)

####`preferred_servers`

List of ntp servers to prefer. Will append 'prefer' for any server in this list
that also appears in the servers list.
Specifies one or more preferred peers. Puppet will append 'prefer' to each matching item in the `servers` array. Valid options: array. Default value: [ ]

####`restrict`

Sets the restrict options in the ntp configuration. The lines are
prefixed with 'restrict', so you just need to list the rest of the restriction.
Specifies one or more `restrict` options for the NTP configuration. Puppet will prefix each item with 'restrict', so you only need to list the content of the restriction. Valid options: array. Default value for most operating systems:

~~~~
[
'default kod nomodify notrap nopeer noquery',
'-6 default kod nomodify notrap nopeer noquery',
'127.0.0.1',
'-6 ::1',
]
~~~~

Default value for AIX systems:

~~~~
[
'default nomodify notrap nopeer noquery',
'127.0.0.1',
]
~~~~

####`servers`

Selects the servers to use for ntp peers.
Specifies one or more servers to be used as NTP peers. Valid options: array. Default value: varies by operating system

####`service_enable`

Determines if the service should be enabled at boot.
Tells Puppet whether to enable the NTP service at boot. Valid options: 'true' or 'false'. Default value: 'true'

####`service_ensure`

Determines if the service should be running or not.
Tells Puppet whether the NTP service should be running. Valid options: 'running' or 'stopped'. Default value: 'running'

####`service_manage`

Selects whether Puppet should manage the service.
Tells Puppet whether to manage the NTP service. Valid options: 'true' or 'false'. Default value: 'true'

####`service_name`

Selects the name of the ntp service for Puppet to manage.
Tells Puppet what NTP service to manage. Valid options: string. Default value: varies by operating system

####`udlc`

Enables configs for undisciplined local clock, regardless of
status as a virtual machine.

Specifies whether to enable specialized configuration options for an undisciplined local clock, regardless of its status as a virtual machine. Valid options: 'true' or 'false'. Default value: 'false'

##Limitations

This module has been built on and tested against Puppet 3.

The module has been tested on:

* RedHat Enterprise Linux 5/6/7
* CentOS 5/6/7
* Oracle Enterprise Linux 5/6/7
* Scientific Linux 5/6/7
* SLES 10SP4/11SP1/12
* Debian 6/7
* Ubuntu 10.04/12.04/14.04
* Solaris 11
* AIX 5.3/6.1/7.1

Testing on other platforms has been light and cannot be guaranteed.
This module has been tested on [all PE-supported platforms](https://forge.puppetlabs.com/supported#compat-matrix), and no issues have been identified.

##Development

Puppet Labs modules on the Puppet Forge are open projects, and community
contributions are essential for keeping them great. We can’t access the
huge number of platforms and myriad of hardware, software, and deployment
configurations that Puppet is intended to serve.
Puppet Labs modules on the Puppet Forge are open projects, and community contributions are essential for keeping them great. We can’t access the huge number of platforms and myriad of hardware, software, and deployment configurations that Puppet is intended to serve.

We want to keep it as easy as possible to contribute changes so that our
modules work in your environment. There are a few guidelines that we need
contributors to follow so that we can have a chance of keeping on top of things.
We want to keep it as easy as possible to contribute changes so that our modules work in your environment. There are a few guidelines that we need contributors to follow so that we can have a chance of keeping on top of things.

You can read the complete module contribution guide [on the Puppet Labs wiki.](http://projects.puppetlabs.com/projects/module-site/wiki/Module_contributing)
For more information, see our [module contribution guide.](https://docs.puppetlabs.com/forge/contributing.html)

###Contributors

The list of contributors can be found at: [https://github.com/puppetlabs/puppetlabs-ntp/graphs/contributors](https://github.com/puppetlabs/puppetlabs-ntp/graphs/contributors)
To see who's already involved, see the [list of contributors.](https://github.com/puppetlabs/puppetlabs-ntp/graphs/contributors)

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