Chef as a provisioner

Part two of a talk about Vagrant. You should also view the presentation that came in between http://www.slideshare.net/hijoerayme/puppet-presentation-17330477

Transcript

1. as a provisioner
   Tuesday, 19 March 13
   

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2. Provisioners
   Vagrant::Config.run do |config|
   config.vm.provision :chef_solo do |chef|
   chef.roles_path = "roles"
   chef.add_role("vm")
   end
   end
   Chef Solo:
   Tuesday, 19 March 13
   

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3. Provisioners
   Vagrant::Config.run do |config|
   config.vm.provision :chef_server do |chef|
   chef.chef_server_url = "http://chef.inter.net"
   chef.add_role("vm")
   end
   end
   Chef Server:
   Tuesday, 19 March 13
   

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4. • chef-solo
   ship cookbooks with your code
   • chef-server
   store cookbooks in a chef server
   Tuesday, 19 March 13
   

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5. Very brief overview
   Cookbooks
   Collections of recipes, templates and other
   configuration attributes to get stuff done.
   Recipes
   Chunks of Ruby code that describe what stuff
   we need to do to get that stuff done.
   Tuesday, 19 March 13
   

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6. Very brief overview
   Node
   A virtual machine, cloud server or server
   Resource
   Creates a user, expands a template, installs a
   package etc
   Tuesday, 19 March 13
   

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7. Very brief overview
   Attribute
   Port number, database name, file location etc
   Template
   A template which you create a file from
   inserting variables
   Tuesday, 19 March 13
   

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8. package "ntp" do
   action :install
   end
   template "/etc/ntp.conf" do
   source "ntp.conf.erb"
   owner "root"
   group "root"
   mode 0644
   notifies :restart, resources(:service => "ntp")
   end
   service "ntp" do
   action :start
   end
   Install package
   Create config file
   from template
   Define service and
   start NTP
   Restart service
   when config file
   changes
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9. https://github.com/contenthub/ch-wordpress
   Example to setup Wordpress
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10. Opscode Community Cookbooks
    Tuesday, 19 March 13
    

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11. include_recipe "mysql::ruby"
    include_recipe "apt"
    include_recipe "build-essential"
    include_recipe "apache2"
    include_recipe "mysql::server"
    include_recipe "php"
    include_recipe "php::module_mysql"
    include_recipe "apache2::mod_php5"
    include_recipe "database"
    Include community cookbooks
    Tuesday, 19 March 13
    

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12. mysql_connection_info = {:host => "localhost",
    :username => 'root',
    :password => node['mysql']['server_root_password']}
    database node['ch-wordpress']['db']['database'] do
    connection mysql_connection_info
    provider Chef::Provider::Database::Mysql
    action :create
    end
    mysql_database_user node['ch-wordpress']['db']['user'] do
    connection mysql_connection_info
    password node['ch-wordpress']['db']['password']
    database_name node['ch-wordpress']['db']['database']
    privileges [:select,:update,:insert,:create,:delete]
    action :grant
    end
    Database cookbook
    Tuesday, 19 March 13
    

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13. directory node['ch-wordpress']['dir'] do
    mode 0755
    owner "root"
    group "root"
    action :create
    end
    Database cookbook
    Tuesday, 19 March 13
    

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14. remote_file node['ch-wordpress']['dir'] +
    "/wordpress.salt.php" do
    source "https://api.wordpress.org/secret-key/1.1/salt/"
    action :create_if_missing
    mode "0644"
    end
    salt_data = ''
    ruby_block "fetch-wordpress-salt" do
    block do
    salt_data = 'node['ch-wordpress']['dir'] + '/wordpress.salt.php')
    end
    action :create
    end
    Ruby Code in Recipe!
    Tuesday, 19 March 13
    

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15. template node['ch-wordpress']['dir'] + '/wp-config.php' do
    source "wp-config.php.erb"
    mode 0755
    owner "root"
    group "root"
    variables(
    :database =>
    node['ch-wordpress']['db']['database'],
    :user =>
    node['ch-wordpress']['db']['user'],
    :password =>
    node['ch-wordpress']['db']['password'],
    :salt_data => salt_data)
    end
    Template resource
    Tuesday, 19 March 13
    

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16. 
    ServerName <%= @params[:server_name] %>
    DocumentRoot <%= @params[:docroot] %>
    >
    Options FollowSymLinks
    AllowOverride FileInfo Options
    AllowOverride All
    Order allow,deny
    Allow from all
    
    
    Options FollowSymLinks
    AllowOverride None
    
    
    .erb template
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17. web_app node['ch-wordpress']['host'] do
    template "ch-wordpress.conf.erb"
    docroot node['ch-wordpress']['dir']
    server_name node['ch-wordpress']['host']
    end
    apache2 cookbook provides web_app
    Tuesday, 19 March 13
    

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18. • Community cookbooks
    http://community.opscode.com/
    • IRC #chef on freenode
    • Foodfight show podcast
    http://foodfightshow.org/index.html
    • Ask me andygale@andy-gale.com
    • Read my book!
    You’re not alone
    Tuesday, 19 March 13
    

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19. Tuesday, 19 March 13
    

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20. Read my book!
    Tuesday, 19 March 13
    

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21. Questions on Vagrant,
    Puppet or Chef?
    Tuesday, 19 March 13
    

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