Provisioning with Puppet
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Puppet is a configuration management tool that allows systems to be provisioned in a consistent, automated way. It uses manifests and resources to describe a system's configuration. Resources include packages, services, files and users. Modules contain reusable sets of resources. Templates allow variables to be used when generating configuration files. Puppet can be used with Vagrant for development and provisioning, and in production via a Puppet master to distribute configuration to clients.
![Modules
class nginx($workers=1, $ensure=present) {
package { nginx:
ensure => $ensure,
}
service { nginx:
ensure => $ensure,
subscribe => File["/etc/nginx/nginx.conf"],
require => File["/etc/nginx/nginx.conf"],
}
file { "/etc/nginx/nginx.conf":
ensure => $ensure,
content => template("nginx/nginx.conf.erb"),
require => Package[nginx],
}
}](https://image.slidesharecdn.com/puppet-presentation-130318172752-phpapp02/85/Provisioning-with-Puppet-9-320.jpg)
Provisioning with Puppet
- 1. Provisioning with Puppet Photo: http://www.flickr.com/photos/vasta/4463786284/
- 2. $ whoami Joe Ray Senior Systems Developer Future Publishing @jr261
- 3. Overview • Why you should use provisioners • What is Puppet? • How do you use it? • Using Puppet with Vagrant • Using Puppet in production
- 4. Why use provisioners? • Reproducible setup • Write less documentation • Same config for multiple platforms • Scale your setup • Easily move from development to production • Distribute amongst team • SSH access not necessary • Use associated tools
- 5. What is Puppet? • Configuration management tool • Platform-agnostic (supports Linux, Free/OpenBSD, OSX, Windows, Solaris) • Description of systems' configuration using manifests • Idempotent
- 6. Resources • Building blocks of configuration: • packages • services • files • users / groups
- 7. Resources package { 'nginx': ensure => present, } user { 'joe': ensure => present, shell => '/bin/zsh', home => '/home/joe', }
- 8. Modules • Self-contained, reusable sets of resources • Typical pattern: • Install package • Manage service • Provide configuration helpers (defined types) • http://forge.puppetlabs.com
- 9. Modules class nginx($workers=1, $ensure=present) { package { nginx: ensure => $ensure, } service { nginx: ensure => $ensure, subscribe => File["/etc/nginx/nginx.conf"], require => File["/etc/nginx/nginx.conf"], } file { "/etc/nginx/nginx.conf": ensure => $ensure, content => template("nginx/nginx.conf.erb"), require => Package[nginx], } }
- 10. Templates server { ! listen 80; ! server_name <%= domain %>; ! root <%= root %>; ! access_log /var/log/nginx/<%= domain %>.access.log; ! keepalive_timeout 5; ! location / { index index.html index.htm; ! } }
- 11. Using modules include nginx class { 'nginx': 'workers' => 5, } nginx::site { 'www.mywebsite.com': 'config' => 'www.mywebsite.com', 'root' => '/data/www.mywebsite.com', }
- 12. Using with Vagrant::Config.run do |config| config.vm.provision :puppet do |puppet| puppet.manifests_path = "manifests" puppet.manifest_file = "my_manifest.pp" end end
- 13. Facts • How Puppet knows about your system $ facter architecture => amd64 domain => vagrantup.com facterversion => 1.6.17 fqdn => debian6.vagrantup.com hardwareisa => unknown hardwaremodel => x86_64 hostname => debian6 id => vagrant interfaces => eth0,lo ipaddress => 10.0.2.15 etc...
- 14. Using with Vagrant::Config.run do |config| config.vm.provision :puppet, :facts => {"vagrant" => "vagrant"} do |puppet| puppet.manifests_path = "manifests" puppet.manifest_file = "my_manifest.pp" end end
- 15. Using with server { ! listen 80; ! server_name <%= domain %>; ! root <%= root %>; <% if @vagrant %> satisfy any; deny all; allow 192.168.33.1; allow 10.0.2.2; <% end %> ! access_log /var/log/nginx/<%= domain %>.access.log; ! keepalive_timeout 5; ! location / { index index.html index.htm; ! } }
- 16. Using Puppet in production manifests / git / svn Puppetmaster modules / files or whatever REST over HTTPS Reports Client Client Client
- 17. What next? • Example Puppet project at: github.com/ josno/puppet-example • Read the docs: docs.puppetlabs.com