On Mar 6, 2012, at 7:51 AM, chris_sny...@sra.com wrote:
> Crap. I'm trying to dump Bcfg2 and move to something reasonable. But so
> far, all my initial assumptions and patterns for Puppet fail. I think in
> terms of heirarchy and inheritence for my systems (all nodes install a core
> set of packages, some have exceptions for those core set of packages, etc)
> and as best as I can understand it Puppet's DSL really wants me to create a
> set of flat, non-hierarchial, non-inheritable set of nodes/classes. And for
> me that's completely un-managable.
>
> I'm reviewing the Puppet-user archives now and I'm seeing a lot of people
> with similar problems but no good patterns for solutions.
>
> I want to be able do something like this (hierarchial, inheritance with
> overloading):
>
> class base {
> package { 'sshd' : ensure => present }
> package {'ntp: ensure => present }
> }
>
> node a,b,c {
> class { 'base' : }
> }
>
> node d {
> class { 'base' : }
> Package{'sshd': ensure => false }
> }
>
> What I'm afraid I have to do is this (flat, redefine lots of nodes and
> duplicate data):
>
> class base
> package {'ntp: ensure => present }
> # More common packages defined
> }
>
> node a,b,c {
> class { 'base' : }
> package { 'sshd' : ensure => present }
> }
>
> node d {
> class { 'base' : }
> package { 'sshd' : ensure => false}
> }
>
> or worse (sometype of parameter passing in the worst, un-managable way):
>
> class base ( # list ever possible ensure parameter, etc ) {
> package { 'sshd' : ensure => $ssh_ensure }
> package {'ntp: ensure => $ntp_ensure }
> # More common packages defined
> }
>
> node a,b,c {
> class { 'base' : }}
> }
>
> node d {
> class { 'base' : ssh_ensure => false}
> }
>
>
> I'm open to any and all suggestions.
----
I use theforeman which has an ENC that allows nested classes (called hostgroups
in Foreman) so I have a 'base' class and many 'groups' which are pre-defined
collections of what you call the flat modules. Nesting is definitely permitted
and useful in Foreman.
Craig
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