Fix creation of cell0

We need to use the proper db_uri() result here, like we do for the
database connection options in nova.conf, otherwise things will fail in
a multinode setup.

Change-Id: I70d27eb4456c9e8b322c05649254624d4be4c5e5
(cherry picked from commit b1f166b674)

.rubocop_todo.yml

@@ -25,6 +25,7 @@ Metrics/MethodLength:
 # SupportedStyles: nested, compact
 Style/ClassAndModuleChildren:
   Exclude:
+    - 'recipes/_nova_cell.rb'
     - 'recipes/api-metadata.rb'
     - 'recipes/api-os-compute.rb'
     - 'recipes/compute.rb'
@@ -39,6 +40,7 @@ Style/Documentation:
   Exclude:
     - 'spec/**/*'
     - 'test/**/*'
+    - 'recipes/_nova_cell.rb'
     - 'recipes/api-metadata.rb'
     - 'recipes/api-os-compute.rb'
     - 'recipes/compute.rb'

metadata.rb

@@ -6,7 +6,7 @@ source_url 'https://github.com/openstack/cookbook-openstack-compute' if respond_
 license 'Apache 2.0'
 description 'The OpenStack Compute service Nova.'
 long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
-version '15.1.0'
+version '15.2.0'
 chef_version '>= 12.5' if respond_to?(:chef_version)
 
 %w(ubuntu redhat centos).each do |os|

recipes/_nova_cell.rb

@@ -22,20 +22,20 @@
 # and not called directly. It creates a basic cellv2 setup, which is required
 # from Ocata forward.
 
+class ::Chef::Recipe
+  include ::Openstack
+end
+
 nova_user = node['openstack']['compute']['user']
 nova_group = node['openstack']['compute']['group']
+db_user = node['openstack']['db']['compute_cell0']['username']
 db_password = get_password('db', 'nova_cell0')
-bind_db = node['openstack']['bind_service']['db']
-listen_address = if bind_db['interface']
-                   address_for bind_db['interface']
-                 else
-                   listen_address = bind_db['host']
-                 end
+uri = db_uri('compute_cell0', db_user, db_password)
 
 execute 'map cell0' do
   user nova_user
   group nova_group
-  command "nova-manage cell_v2 map_cell0 --database_connection mysql+pymysql://nova_cell0:#{db_password}@#{listen_address}/nova_cell0?charset=utf8"
+  command "nova-manage cell_v2 map_cell0 --database_connection #{uri}"
   not_if 'nova-manage cell_v2 list_cells | grep -q cell0'
   action :run
 end