Hi Russell,
I remember asking this a while ago and I don't think you can. In your
specific example, if it's pasted verbatim then you don't actually need
to inherit, as it doesn't look like your overriding any resources in
postgresql::base. Once something's declared, you can't "undo" it.
You could override Package["postgresql"] and set it to ensure =>
absent, but that's not the same as ignoring it - might do what you're
trying to achieve in this specific case though.
Lastly you could try work out some tricky way of using variables to
conditionally declare Package["postgresql"] in postgresql::base, but
that opens up a world of variable scoping hurt, this is a terrible
example but shows the idea:
class postgresql::base {
if ($install_postgres_base) {
package {"postgresql": ensure => present, }
}
}
class postgresql::rhe::v8-4 {
$install_postgres_base = 0
include postgresql::base
...
}
Maybe a better way would be to use variables for the names of your
packages, similar to the way the Exampl42 set of modules operate
(https://github.com/example42/puppet-modules). You avoid as much of
the variable scoping pain by declaring all variables in node
definitions before you include any classes:
node woof {
$need_postgres_8_4 = 1
include postgresql::base
}
class postgresql::base {
if ($need_postgres_8_4) {
$postgres_software = [ "postgresql84", "postgresql84-server" ]
} else {
$postgres_software = "postgresql"
}
package { $postgres_software: ensure => present, }
}
Hope that helps,
-Luke
On Mar 2, 4:31 am, "russell.fulton" <russell.ful...@gmail.com> wrote:
> I am having a fight with a postgressql nodule:
>
> It defines:
>
> class postgresql::base {
>
> package {"postgresql":
> ensure => present,
> notify => undef,
> }
> .......
>
> and later we have a class that inherits the base class:
>
> class postgresql::rhe::v8-4 inherits postgresql::base {
>
> $data_dir = $postgresql_data_dir ? {
> "" => "/var/lib/postgresql",
> default => $postgresql_data_dir,
> }
>
> package {[
> "postgresql84",
> "postgresql84-server",
> ]:
> ensure => present,
> }
>
> How can I get puppet to ignore the package definition in the 'base'
> class?
>
> This is on redhat -- postgresql installs 8.1.xxx and I want 8.4 --
> puppet installs the two 84 packages and then bitches that it can not
> install the straight postgresql because of conflicts (quite rightly).
>
> Russell
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