Presentation covers usage of Puppet, why it emerged and what kind of problems it solves.

1. Puppet
By Zenyk Matchyshyn

2. Agenda
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What was before
Main ideas behind Puppet
Puppet Basics
Puppet Components
Extensibility
Marionette Collective (MCollective)
Alternatives
Q/A
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3. What was before
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Huge manual activity
Custom written shell scripts
SSH’ing into everything
Bash kung-fu
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4. Was
Application
Server
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Database
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5. Is
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6. Or like this
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Facebook: 180K servers
Microsoft: 1M servers
Twitter: ~ 1k-2K servers (2011)
Netflix – 10K servers (2011)
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7. Main ideas behind Puppet
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Declaratively describe resources and their
state
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Abstract from Operation System
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Re-usage of snippets
Security build-in
Focus on efficiency rather than flexibility
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8. Puppet Background
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Started in 2005, before 2.7 – under GPL, after
– Apache 2 license
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Written in Ruby, provides Puppet DSL
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Has commercial support
Huge adoption and community
Cross platform
Client-server with REST API
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9. Puppet Basics
class ntp {
package { "ntp":
ensure => installed
}
service { "ntp":
ensure => running,
require => Package["ntp"]
}
}
node myhost {
include ntp
}
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10. Puppet - Demo
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11. Puppet Basics – Cont.
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Packages, Files, Services, Groups, Users, …
Dependencies on resources
Inheritance of classes
Conditionals
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12. How it works
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13. Puppet Components
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Facter
Agent
Master
Reporting
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14. Main Puppet Entities
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Facts – system information
Manifest – Puppet code
Catalog – host resources with dependencies
Report – collection of events during Catalog
run
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15. Extensibility
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Facter
External Node Classifier
Custom Types, Providers, Functions
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16. MCollective
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Orchestration framework related to Puppet
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Asynchronous execution of operations on
collectives using STOMP
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Integration with Puppet/Facter etc.
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More fine grained selection of nodes called
“collectives”
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17. Alternatives
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CFEngine
Chef
Salt
Ansible
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18. Q/A
?
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