This cookbook includes recipes and provider to install and configure postgresql database. This cookbook was tested with Postgresql 9.1 and 9.2, and should work with 9.0 too.

• This cookbook version (0.1.1) tested only on Debian squeeze.
• You must have repository with Postgres version 9.x

This cookbook have server and client attribute files.

With client attributes(["postgresql"]["client"]) you can set only postgresql client and library version.

Server attributes are starting from ["postgresql"]["defaults"] and used as default attributes for postgresql provider. You should not override this defaults, you can pass your settings to provider instead.

• :create: creates postgresql cluster

• cluster_name: name attribute. Cluster name (e.g. main).
• cookbook: cookbook for templates. Skip this for default templates.
• databag: data bag for users and databases, if you don't want create users or databases with chef you can skip this.
• cluster_create_options: options for pg_createcluster (only locale related options)
• configuration: Hash with configuration options for postgresql. Configuration divided to sections, see examples.
• hba_configuration: Array with hba configuration, see examples.
• ident_configuration: Array with ident configuration, see examples.
• replication: Hash with replication configuration. Now provider support only streaming replication. See examples. Cluster must be copied before chef run.

Example master database setup:

postgresql "main" do
cluster_create_options [ "locale" => "ru_RU.UTF-8" ]
	configuration(
	:version => "9.1",
	:connection => {
  		:listen_addresses => "'192.168.0.1'",
  		:max_connections => 300,
  		:ssl_renegotiation_limit => 0
  	},
  	:resources => {
  		:shared_buffers => "512MB",
  		:maintenance_work_mem => "64MB",
  		:work_mem => "8MB",
	},  
	:queries => {
  		:effective_cache_size => "512MB"
	},
	:wal => { :checkpoint_completion_target => "0.9" },
	:logging => { :log_min_duration_statement => "200" }
	)
	hba_configuration(
		[ { :type => "host", :database => "all", :user => "all", :address => "192.168.0.0/24", :method => "md5" },
  	  	  { :type => "host", :database => "replication", :user => "postgres", :address => "192.168.0.10/32", :method => "trust" } ] 
	)
end

Example slave database setup:

postgresql "main" do
cluster_create_options [ "locale" => "ru_RU.UTF-8" ]
	configuration(
	:version => "9.1",
	:connection => {
  		:listen_addresses => "'192.168.0.10'",
  		:max_connections => 300,
  		:ssl_renegotiation_limit => 0
  	},
  	:resources => {
  		:shared_buffers => "512MB",
  		:maintenance_work_mem => "64MB",
  		:work_mem => "8MB",
	},  
	:queries => {
  		:effective_cache_size => "512MB"
	},
	:wal => { :checkpoint_completion_target => "0.9" },
	:logging => { :log_min_duration_statement => "200" }
	:standby => { :hot_standby => "on" }
	)
	hba_configuration(
		[ { :type => "host", :database => "all", :user => "all", :address => "192.168.0.0/24", :method => "md5" },
  	  	  { :type => "host", :database => "replication", :user => "postgres", :address => "192.168.0.10/32", :method => "trust" } ] 
	)
	replication( :standby_mode =>"on", :primary_conninfo => "host=192.168.0.1", :trigger_file => "/tmp/pgtrigger" )
end

• More examples
• Better replication support
• Provider for database declaration

Author:: Nikita Borzykh ([email protected])

Copyright (C) LLC 2012 Express 42

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