This is exactly the kind of info that I was once hunting for a month or two
ago. The ability to have one class depend upon another, or to have one
class depend upon an another type, is huge, and simplifies so much for me!
Thank you!!!
On Thu, Oct 16, 2008 at 11:36 AM, Teyo Tyree <[EMAIL PROTECTED]> wrote:
> Justin Williams wrote:
>
> That is perfect! Thank you!
>
> So, if I have:
> Class A for basic stuff
> Class B for system specific stuff
> and Class C for other stuff that has to happen after classes A & B,
> then, if I have, say, file { "/foo/bar/snarfblatt": require => Class[" B"],
> etc; } in class C
> And then require File["/foo/bar/snarfblatt"] in the rest of the resouces in
> class C
>
> Then that will definitively set the order of B must happen before the file
> can be copied over, and the file must be copied over before anything else
> can be done in class C.
>
> Of course, that means I have to copy in umpteen bajillion "require File..."
> statements, to get everything else in order in Class C, but, doing that once
> versus continually having to go back and play clean up while rolling out a
> new box, it's a whole lot mote time effective!
>
> You can also setup class to class or class to resource relationships but
> it is hackish. If you set a variable inside a class with the same name as a
> metaparameter, the metaparameter is applied to the class. For example:
> class bar {
> $require = File['foo']
> }
> You can could also set default attributes for a given resource type within
> a class or specify a list of files in an array to reduce the amount of
> repeated code you have in a class.
>
> Thanks again!!
>
> On Thu, Oct 16, 2008 at 10:47 AM, Teyo Tyree <[EMAIL PROTECTED]>wrote:
>
>> Hey Zoniguana,
>>
>> zoniguana wrote:
>>
>> I'm probably being dense here, but....
>>
>> Is if possible to include a class, onlyif a given file exists?
>> If not, can I put an onlyif in all the file/cron/service/etc
>> statements, so that they are only executed once that file is put in
>> place (I.e. only run phase 2 of the configging once a file is in place
>> to confirm that ALL of phase 1 is done)?
>>
>>
>>
>> You probably want to use the 'require' or 'before' metaparameters here.
>> These Metaparameters establish ordering relationships between classes and
>> resources i.e.:
>>
>> file {"foo":
>> path => "/etc/foo",
>> content => "the sets up the bar service"
>> }
>> service {"bar":
>> ensure => running,
>> enabled = true,
>> require => File["foo"]
>> }
>>
>> This sets up a relationship between the File["foo"] resource and the
>> Service["bar"] resource such that the File['foo'] must exist before the
>> Service["bar"] is started. The same holds true for class relationships
>> i.e.:
>>
>> class foo {
>> file {"foo":
>> path => "/etc/foo",
>> content => "the sets up the bar service"
>> }
>> user {"foo":
>> ensure => present
>> }
>> }
>>
>> service{"bar":
>> ensure => running,
>> enabled = true,
>> require => Class["foo"]
>> }
>>
>> In this case, all the conditions of resources defined in Class["foo"] must
>> be satisfied before Service["bar"] is started. The before metaparameter
>> just sets up the reverse relationship between classes and resources.
>>
>> A little confused on trying to find a way to order classes, if I can
>> manage it....
>> i.e. make all the basic stuff happen, then make some other stuff
>> happen, then make the most advanced stuff (that relies on everything
>> else being done first) happen.
>>
>>
>>
>> -teyo
>>
>> --
>>
>> Those who claim the dead never return to life haven't ever been around here
>> at quitting time.
>>
>> Teyo Tyree ::: http://reductivelabs.com ::: +1.615.275.5066
>>
>>
>>
>>
>>
>
>
>
>
> --
>
> >
>
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