puppet random notification confusion

[Muhammad Yousuf Khan]

i am being through a exercise on docs.puppetlabs.com

and i am confuse with the notification output. as it shows last message first and first message at last.
i just need to know why the output notifications are random

here is my .pp file.

@puppet:/etc/puppetlabs/puppet# cat  text.pp

file {'/tmp/test1':
      ensure  => file,
      content => "Hi.\n",
    }
notify {"this is 1":}

   file {'/tmp/test2':
      ensure => directory,
      mode   => 0644,
    }

    file {'/tmp/test3':
      ensure => link,
      target => '/tmp/test1',
    }

    file {'/tmp/test2/insidedir':
      ensure => file,
      content => 'infor put by me',
    }

    user {'katie':
      ensure => absent,
    }

notify {"I'm notifying you.":}
notify {"this is 2":}
notify {"So am I!":}
notify {"this is 3":}

---------------------------------------

here is the output

Notice: Compiled catalog for puppet.mycompany.com in environment production in 0.55 seconds
Notice: this is 2
Notice: /Stage[main]//Notify[this is 2]/message: defined 'message' as 'this is 2'
Notice: this is 3
Notice: /Stage[main]//Notify[this is 3]/message: defined 'message' as 'this is 3'
Notice: So am I!
Notice: /Stage[main]//Notify[So am I!]/message: defined 'message' as 'So am I!'
Notice: I'm notifying you.
Notice: /Stage[main]//Notify[I'm notifying you.]/message: defined 'message' as 'I'm notifying you.'
Notice: this is 1
Notice: /Stage[main]//Notify[this is 1]/message: defined 'message' as 'this is 1'
Notice: Finished catalog run in 0.49 seconds

so the question is why the notification outputs are so random.

Thanks,

MYK

[Denmat]

Hi,

Puppet doesn't run in any specific order unless you tell it to.

Look at http://docs.puppetlabs.com/learning/ordering.html for the learning series.

Basically you can use 'require' declarations to get order:

file {'/tmp/thing':

  require => File['/tmp/that']

  ...

}

This says, the 'thing' file needs 'that' file to be done first.

HTH

Den

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[Jason Antman]

I seem to be pointing someone to this every week. You may want to refer to John Bollinger's 2014-01-03 reply to the "wondering if I want to[sic] much now" thread, which gives some excellent descriptions on 'how not to Puppet':
https://groups.google.com/d/msg/puppet-users/IGqjPpVCrKA/VcUKiV3xfPkJ

As Denmat said, "that's not how Puppet works." Puppet is not a bash script, it's a declarative language to describe the desired configuration of something. On resources that absolutely must have an order dependency, you can use explicit ordering (->) or even better, the require parameter. Aside from variable resolution, manifests aren't executed in a defined order (you should really spend some time reading through docs.puppetlabs.com, especially w/r/t catalog compilation and evaluation).

-Jason