PuppetConf 2013 Types and Providers

•

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Nan Liu

Puppet Conf 2013 Types and Provider Code: www.github.com/nanliu/puppet-pkg

Technologie Divertissement et humour

Puppet Types and Providers
Dan Bode
One man comedy routine | BodeCo
@bodepd
Nan Liu
Outsourced Intern

puppetconf.com #puppetconf
•  Resource Behavior and Terminology
•  Resource Development
– Type
– Providers
•  … (Dan’s Secret)
•  Proﬁt !!!
Overview

puppetconf.com #puppetconf
•  How it works
•  Type
•  Providers
Resource

puppetconf.com #puppetconf
How it works?

puppetconf.com #puppetconf
•  How to identify a unique resource
•  Commands to manage resource
– Inspect current state
– Conﬁgure desire state
Prereqs

puppetconf.com #puppetconf
•  Title (namevar)
– uuids and guids
– satisfy unique constraint
– composite namevar
•  Attributes
– Properties
– Parameters
•  Metaparameters
Resource

puppetconf.com #puppetconf
•  Have desire state
•  Preferably only two
– present/absent
– running/stopped
•  Overloading
– version
Ensurable Resource

puppetconf.com #puppetconf
service { “sshd”:
ensure => ‘running’,
enable => true,
require => Package[‘ssh’],
tag => ‘PuppetConf’,
}
Resource Example

puppetconf.com #puppetconf
/etc/init.d/sshd start/stop/status/restart
service sshd start/stop/status/restart
smf ?
Commands

puppetconf.com #puppetconf
•  Type (single)
– Describes resources attributes
– What you write as Puppet manifests
•  Provider (many)
– Query state
– Conﬁgure resource
Separation of Responsibility

puppetconf.com #puppetconf
•  Type
•  Namevar
Type

puppetconf.com #puppetconf
•  exists?
•  create
•  destroy
Ensurable

puppetconf.com #puppetconf
•  exists?
•  install
•  uninstall
Override ensurable

puppetconf.com #puppetconf
•  install_options
•  remove_options
•  version
Parameters

puppetconf.com #puppetconf
•  version
•  Property vs. Parameter
Problems?

puppetconf.com #puppetconf
•  getter
•  setter
Property

puppetconf.com #puppetconf
•  Get all instance of resource
•  mk_resource_methods
self.instances

puppetconf.com #puppetconf
•  conﬁne
•  defaultfor
Provider constraints

puppetconf.com #puppetconf
•  Not a hard relationship
Autorequire

Thank You
Nan Liu
Sr Systems Engineer | VMware
@sesshin

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PuppetConf 2013 Types and Providers

1. Puppet Types and Providers Dan Bode One man comedy routine | BodeCo @bodepd Nan Liu Outsourced Intern

2. puppetconf.com #puppetconf •  Resource Behavior and Terminology •  Resource Development – Type – Providers •  … (Dan’s Secret) •  Proﬁt !!! Overview

3. puppetconf.com #puppetconf •  How it works •  Type •  Providers Resource

4. puppetconf.com #puppetconf How it works?

5. puppetconf.com #puppetconf •  How to identify a unique resource •  Commands to manage resource – Inspect current state – Conﬁgure desire state Prereqs

6. puppetconf.com #puppetconf •  Title (namevar) – uuids and guids – satisfy unique constraint – composite namevar •  Attributes – Properties – Parameters •  Metaparameters Resource

7. puppetconf.com #puppetconf •  Have desire state •  Preferably only two – present/absent – running/stopped •  Overloading – version Ensurable Resource

8. puppetconf.com #puppetconf service { “sshd”: ensure => ‘running’, enable => true, require => Package[‘ssh’], tag => ‘PuppetConf’, } Resource Example

9. puppetconf.com #puppetconf /etc/init.d/sshd start/stop/status/restart service sshd start/stop/status/restart smf ? Commands

10. puppetconf.com #puppetconf Type

11. puppetconf.com #puppetconf •  Type (single) – Describes resources attributes – What you write as Puppet manifests •  Provider (many) – Query state – Conﬁgure resource Separation of Responsibility

12. puppetconf.com #puppetconf •  Type •  Namevar Type

13. puppetconf.com #puppetconf •  exists? •  create •  destroy Ensurable

14. puppetconf.com #puppetconf •  exists? •  install •  uninstall Override ensurable

15. puppetconf.com #puppetconf •  install_options •  remove_options •  version Parameters

16. puppetconf.com #puppetconf •  version •  Property vs. Parameter Problems?

17. puppetconf.com #puppetconf •  getter •  setter Property

18. puppetconf.com #puppetconf •  Get all instance of resource •  mk_resource_methods self.instances

19. puppetconf.com #puppetconf •  conﬁne •  defaultfor Provider constraints

20. puppetconf.com #puppetconf •  Not a hard relationship Autorequire

21. Thank You Nan Liu Sr Systems Engineer | VMware @sesshin