add postgresql support to nova and associated role

cookbooks/nova/attributes/default.rb

@@ -29,6 +29,7 @@ default[:nova][:my_ip] = ipaddress
 default[:nova][:public_interface] = "eth1"
 default[:nova][:vlan_interface] = "eth1"
 default[:nova][:mysql] = true
+default[:nova][:postgresql] = false
 default[:nova][:images] = []
 default[:nova][:network] = "10.0.0.0/24 8 32"
 default[:nova][:floating_range] = "10.128.0.0/24"

cookbooks/nova/metadata.rb

@@ -11,5 +11,6 @@ depends "mysql"
 depends "openldap"
 depends "openssl"
 depends "python-ldap"
+depends "postgresql"
 depends "rabbitmq"
 depends "runit"

cookbooks/nova/recipes/common.rb

@@ -53,6 +53,21 @@ if node[:nova][:mysql]
     Chef::Log.info("Using local mysql at  #{mysql[:mysql][:bind_address]}")
   end
   sql_connection = "mysql://#{mysql[:nova][:db][:user]}:#{mysql[:nova][:db][:password]}@#{mysql[:mysql][:bind_address]}/#{mysql[:nova][:db][:database]}"
+elsif node[:nova][:postgresql]
+  Chef::Log.info("Using postgresql")
+  postgresqls = nil
+
+  unless Chef::Config[:solo]
+    postgresqls = search(:node, "recipes:nova\\:\\:postgresql#{env_filter}")
+  end
+  if postgresqls and postgresqls[0]
+    postgresql = postgresqls[0]
+    Chef::Log.info("PostgreSQL server found at #{postgresql[:ipaddress]}")
+  else
+    postgresql = node
+    Chef::Log.info("Using local PostgreSQL at #{postgresql[:ipaddress]}")
+  end
+  sql_connection = "postgresql://#{postgresql[:nova][:db][:user]}:#{postgresql[:nova][:db][:password]}@#{postgresql[:ipaddress]}/#{postgresql[:nova][:db][:database]}"
 end
 
 rabbits = nil

cookbooks/nova/recipes/postgresql.rb

@@ -0,0 +1,36 @@
+#
+# Cookbook Name:: nova
+# Recipe:: postgresql
+#
+
+Chef::Log.info("PostgreSQL recipe included")
+
+package "python-psycopg2"
+
+bash "postgresql-grant-nova-user-privileges" do
+  code <<-EOH
+    echo "GRANT ALL ON DATABASE #{node[:nova][:db][:database]} TO #{node[:nova][:db][:user]}" | su - postgres -c psql
+  EOH
+  action :nothing
+end
+
+bash "postgresql-create-nova-user" do
+  code <<-EOH
+    echo "CREATE USER #{node[:nova][:db][:user]} WITH PASSWORD '#{node[:nova][:db][:password]}'" | su - postgres -c psql
+  EOH
+  action :nothing
+  notifies :run, "bash[postgresql-grant-nova-user-privileges]", :immediately
+end
+
+bash "postgresql-create-nova-db" do
+  code <<-EOH
+    echo "CREATE DATABASE #{node[:nova][:db][:database]}" | su - postgres -c psql
+  EOH
+  notifies :run, "bash[postgresql-create-nova-user]", :immediately
+end
+
+# save data so it can be found by search
+unless Chef::Config[:solo]
+  Chef::Log.info("Saving node data")
+  node.save
+end

cookbooks/postgresql/attributes/default.rb

@@ -66,3 +66,5 @@ else
   default[:postgresql][:version] = "8.4"
   set[:postgresql][:dir]            = "/etc/postgresql/#{node[:postgresql][:version]}/main"
 end
+
+default[:postgresql][:hba_records] = []

cookbooks/postgresql/recipes/server_debian.rb

@@ -38,6 +38,9 @@ template "#{node[:postgresql][:dir]}/pg_hba.conf" do
   owner "postgres"
   group "postgres"
   mode 0600
+  variables(
+    :records => node[:postgresql][:hba_records]
+  )
   notifies :reload, resources(:service => "postgresql")
 end
 
@@ -46,5 +49,5 @@ template "#{node[:postgresql][:dir]}/postgresql.conf" do
   owner "postgres"
   group "postgres"
   mode 0600
-  notifies :restart, resources(:service => "postgresql")
+  notifies :restart, resources(:service => "postgresql"), :immediately
 end

cookbooks/postgresql/templates/default/debian.pg_hba.conf.erb

@@ -81,3 +81,8 @@ local   all         all                               ident
 host    all         all         127.0.0.1/32          md5
 # IPv6 local connections:
 host    all         all         ::1/128               md5
+
+# Chef-defined records
+<% for @record in @records %>
+<%= @record %>
+<% end %>

cookbooks/postgresql/templates/default/debian.postgresql.conf.erb

@@ -53,7 +53,7 @@ external_pid_file = '/var/run/postgresql/<%= node.postgresql.version -%>-main.pi
 
 # - Connection Settings -
 
-#listen_addresses = 'localhost'		# what IP address(es) to listen on;
+listen_addresses = '*'			# what IP address(es) to listen on;
 					# comma-separated list of addresses;
 					# defaults to 'localhost', '*' = all
 					# (change requires restart)

roles/nova-postgresql-server.rb

@@ -0,0 +1,19 @@
+name "nova-postgresql-server"
+description "PostgreSQL server for Nova"
+
+run_list(
+  "recipe[postgresql::server]",
+  "recipe[nova::postgresql]"
+)
+
+default_attributes(
+  "nova" => {
+    "mysql" => false,
+    "postgresql" => true
+  },
+  "postgresql" => {
+    "hba_records" => [
+      "host    all         all         0.0.0.0/0             md5"
+    ]
+  }
+)