Puppet users - Nov 2012 - Exception for one server on a basic setup

Hi,

I''m not a total newbie with puppet, but I only use it for a few things
and
I''m not even using modules yet, mostly because I only deploy
configuration
files for now.

I have a configuration for NTP that looks like this:

class ntpd {
    package { "ntp":
        ensure => installed,
    }
      file { "/etc/ntp.conf":
        owner => root,
        group => root,
        mode => 0644,
        source => "puppet://$puppet_server/files/ntp.conf",
        require => Package["ntp"]
    }

    service { "ntpd":
        ensure => running,
        enable => true,
        hasrestart => true,
        hasstatus => true,
        require => [Package["ntp"],
File["/etc/ntp.conf"]],
        subscribe => File["/etc/ntp.conf"],
    }
}

However, I would need to push a different file to my NTP servers (the 
puppet://$puppet_server/files/ntp.conf) are for clients.  How can I do 
that?  Can I simply declare my two servers in a node declaration and set a 
variable in it and then use a puppet:// path that includes a variable?

The setup is that I have 2 NTP servers that sync to servers on the net and 
all my servers and equipment sync to these two servers.

Thanks,

Ugo

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On Tue, Nov 20, 2012 at 1:06 PM, Ugo Bellavance <ugob@lubik.ca> wrote:
> However, I would need to push a different file to my NTP servers (the
> puppet://$puppet_server/files/ntp.conf) are for clients.  How can I do
that?
> Can I simply declare my two servers in a node declaration and set a
variable
> in it and then use a puppet:// path that includes a variable?
The simplest option here is to just do the following, taking your
existing ntp.conf file stanza as an example:

class ntpd {
    package { "ntp":
        ensure => installed,
    }
    file { "/etc/ntp.conf":
      owner => root,
      group => root,
      mode => 0644,
      source => ["puppet://$puppet_server/files/ntp.conf.$host,
                     "puppet://$puppet_server/files/ntp.conf"],
      require => Package["ntp"]
  }

Puppet will use the first file that it finds in the "source" array.
For a more in depth explanation, see the ''source'' parameter
description at http://docs.puppetlabs.com/references/3.0.latest/type.html#file.

Hope this helps,

Matt.

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On Tuesday, November 20, 2012 11:30:47 AM UTC-5, Matthew Burgess
wrote:
>
> On Tue, Nov 20, 2012 at 1:06 PM, Ugo Bellavance
<ug...@lubik.ca<javascript:>>
> wrote: 
>
> > However, I would need to push a different file to my NTP servers (the 
> > puppet://$puppet_server/files/ntp.conf) are for clients.  How can I do
> that? 
> > Can I simply declare my two servers in a node declaration and set a 
> variable 
> > in it and then use a puppet:// path that includes a variable? 
>
> The simplest option here is to just do the following, taking your 
> existing ntp.conf file stanza as an example: 
>
> class ntpd { 
>     package { "ntp": 
>         ensure => installed, 
>     } 
>     file { "/etc/ntp.conf": 
>       owner => root, 
>       group => root, 
>       mode => 0644, 
>       source => ["puppet://$puppet_server/files/ntp.conf.$host, 
>                      "puppet://$puppet_server/files/ntp.conf"], 
>       require => Package["ntp"] 
>   } 
>
> Puppet will use the first file that it finds in the "source"
array.
> For a more in depth explanation, see the ''source''
parameter
> description at 
> http://docs.puppetlabs.com/references/3.0.latest/type.html#file. 
>
Ok, so the process would be to first change my config to have the two 
sources as you described, then have a file that has the "ntp server"
confi,
called ntp.conf.ntp1.mydomain.com and symlink it to 
ntp.conf.ntp2.mydomain.com?

That is really nice.

Too bad I don''t have much time to play with puppet.  I know, puppet
would
save me time :). 

Thanks a lot!

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On Tuesday, November 20, 2012 2:25:13 PM UTC-5, Ugo Bellavance
wrote:
>
>
>
> On Tuesday, November 20, 2012 11:30:47 AM UTC-5, Matthew Burgess wrote:
>>
>> On Tue, Nov 20, 2012 at 1:06 PM, Ugo Bellavance <ug...@lubik.ca>
wrote:
>>
>> > However, I would need to push a different file to my NTP servers
(the
>> > puppet://$puppet_server/files/ntp.conf) are for clients.  How can
I do
>> that? 
>> > Can I simply declare my two servers in a node declaration and set
a
>> variable 
>> > in it and then use a puppet:// path that includes a variable? 
>>
>> The simplest option here is to just do the following, taking your 
>> existing ntp.conf file stanza as an example: 
>>
>> class ntpd { 
>>     package { "ntp": 
>>         ensure => installed, 
>>     } 
>>     file { "/etc/ntp.conf": 
>>       owner => root, 
>>       group => root, 
>>       mode => 0644, 
>>       source => ["puppet://$puppet_server/files/ntp.conf.$host,
>>                     
"puppet://$puppet_server/files/ntp.conf"],
>>       require => Package["ntp"] 
>>   } 
>>
>> Puppet will use the first file that it finds in the "source"
array.
>> For a more in depth explanation, see the ''source''
parameter
>> description at 
>> http://docs.puppetlabs.com/references/3.0.latest/type.html#file. 
>>
>
> Ok, so the process would be to first change my config to have the two 
> sources as you described, then have a file that has the "ntp
server" confi,
> called ntp.conf.ntp1.mydomain.com and symlink it to 
> ntp.conf.ntp2.mydomain.com?
>
>  
I tested it and at first it didn''t work, so I changed $host for $fqdn. 
I
tested it and it worked.  I haven''t tested the symlink yet but
I''ll do that
tonight.

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On 11/20/2012 02:06 PM, Ugo Bellavance wrote:

 > The setup is that I have 2 NTP servers that sync to servers on
the
> and all my servers and equipment sync to these two servers.
I created two classes for this purpose - ntp::client and ntp::server, 
and use data from hiera. Although I could maybe use just one class and 
depending on hiera options set up client or server on a node. I 
recommend this approach, combined with ruby erb template for ntp.conf.



-- 
Jakov Sosic
www.srce.unizg.hr

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On Tuesday, November 20, 2012 3:13:03 PM UTC-5, Ugo Bellavance
wrote:
>
>
>
> On Tuesday, November 20, 2012 2:25:13 PM UTC-5, Ugo Bellavance wrote:
>>
>>
>>
>> On Tuesday, November 20, 2012 11:30:47 AM UTC-5, Matthew Burgess wrote:
>>>
>>> On Tue, Nov 20, 2012 at 1:06 PM, Ugo Bellavance
<ug...@lubik.ca> wrote:
>>>
>>> > However, I would need to push a different file to my NTP
servers (the
>>> > puppet://$puppet_server/files/ntp.conf) are for clients.  How
can I do
>>> that? 
>>> > Can I simply declare my two servers in a node declaration and
set a
>>> variable 
>>> > in it and then use a puppet:// path that includes a variable? 
>>>
>>> The simplest option here is to just do the following, taking your 
>>> existing ntp.conf file stanza as an example: 
>>>
>>> class ntpd { 
>>>     package { "ntp": 
>>>         ensure => installed, 
>>>     } 
>>>     file { "/etc/ntp.conf": 
>>>       owner => root, 
>>>       group => root, 
>>>       mode => 0644, 
>>>       source =>
["puppet://$puppet_server/files/ntp.conf.$host,
>>>                     
"puppet://$puppet_server/files/ntp.conf"],
>>>       require => Package["ntp"] 
>>>   } 
>>>
>>> Puppet will use the first file that it finds in the
"source" array.
>>> For a more in depth explanation, see the ''source''
parameter
>>> description at 
>>> http://docs.puppetlabs.com/references/3.0.latest/type.html#file. 
>>>
>>
>> Ok, so the process would be to first change my config to have the two 
>> sources as you described, then have a file that has the "ntp
server" confi,
>> called ntp.conf.ntp1.mydomain.com and symlink it to 
>> ntp.conf.ntp2.mydomain.com?
>>
>>  
> I tested it and at first it didn''t work, so I changed $host for
$fqdn.  I
> tested it and it worked.  I haven''t tested the symlink yet but
I''ll do that
> tonight.
>
It didn''t work with the symlink so I did a simple copy.  I
don''t know if a
hard link would have worked but the copy works and it is not that bad to 
maintain. 

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On Tuesday, November 20, 2012 5:28:00 PM UTC-5, Jakov Sosic
wrote:
>
> On 11/20/2012 02:06 PM, Ugo Bellavance wrote: 
>
>  > The setup is that I have 2 NTP servers that sync to servers on the 
> > and all my servers and equipment sync to these two servers. 
>
> I created two classes for this purpose - ntp::client and ntp::server, 
> and use data from hiera. Although I could maybe use just one class and 
> depending on hiera options set up client or server on a node. I 
> recommend this approach, combined with ruby erb template for ntp.conf. 
>
Makes sense, I''ll investigate later on.

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