Well you can on some resources types, like an exec, but not on file resources -
which is annoying sometimes. With file resources it's different but it would be
great to have an 'onlyif' parameter.
So, you can turn your package install definition into an exec that has a
pre-condition.
exec {aptpackage:
command => apt install thing,
onlyif => sometest cond
}
That may work better for you.
Den
On 21/08/2011, at 9:30, Brian Troutwine <br...@troutwine.us> wrote:
> I wouldn't wish Puppet to play guess the quantum cat but, rather, to have the
> agent's application of its catalog error in a predictable fashion. I'd like
> to express the pre-condition that if /etc/apt/apt.conf.d/01proxy exists in
> the filesystem then the installation of package apt-cacher should error.
>
> Puppet, I believe, does not have this capability, and so the catalog build
> fails in an obscure manner. Do you suggest that it be a poor idea to include
> such pre-conditions in the language?
>
> On Sat, Aug 20, 2011 at 7:23 PM, Denmat <tu2bg...@gmail.com> wrote:
> Hi,
>
> No, you can only declare the state of a resource once. It can't be present
> and absent at the same time.
>
> Den
>
>
> On 21/08/2011, at 8:50, Brian Troutwine <br...@troutwine.us> wrote:
>
>> PEBKAC, all.
>>
>> My images were already tainted with 01proxy, so it existed before the
>> installation of the apt-cacher. Question: is it possible to set a
>> precondition on a resource, say to ensure that a file _doesn't_ exist before
>> installation of a package?
>>
>> On Sat, Aug 20, 2011 at 5:38 PM, Brian Troutwine <br...@troutwine.us> wrote:
>> I also note that the following fails to order as I expect:
>>
>> class base {
>> if $hostname == 'apt' {
>> file { '/etc/apt/apt.conf.d/01proxy':
>> ...
>> require=> Package['apt-cacher'],
>> notify => Service['apt-cacher'],
>> }
>> ...
>> }
>> }
>>
>> node 'apt.example.com' {
>> include base, aptcacher
>> }
>>
>> 01proxy is placed in the filesystem before the Package apt-cacher is
>> installed or the Service apt-cacher started.
>>
>> On Sat, Aug 20, 2011 at 3:34 PM, Brian Troutwine <br...@troutwine.us> wrote:
>> I meant to include more material and have inserted it inline below. My
>> apologies.
>>
>> On Sat, Aug 20, 2011 at 3:31 PM, Brian Troutwine <br...@troutwine.us> wrote:
>> Hello, all.
>>
>> I have a module for apt-cacher and a node definition something like this:
>>
>> class base {
>> file { '/etc/apt/apt.conf.d/01proxy':
>> ...
>> }
>> }
>>
>> node 'apt.example.com' {
>> include base, aptcacher
>>
>> Class['aptcacher'] -> File['/etc/apt/apt.conf.d/01proxy']
>> }
>>
>> I'm attempting, on the apt server, to ensure that the apt proxy is installed
>> _before_ the reference to it being a proxy is made, else I can't install the
>> silly thing. However, this dependency forcing fails and the proxy reference
>> file is _sometimes_ installed before the proxy itself.
>>
>> Moreover, if I rewrite the dependency as:
>>
>> Service['apt-cacher'] -> File['/etc/apt/apt.conf.d/01proxy']
>>
>> there is no change.
>>
>>
>> Why?
>>
>> --
>> Brian L. Troutwine
>>
>>
>>
>>
>> --
>> Brian L. Troutwine
>>
>>
>>
>>
>> --
>> Brian L. Troutwine
>>
>>
>>
>>
>> --
>> Brian L. Troutwine
>>
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