Add mysql db collectd monitoring

recipes/nova-setup-monitoring.rb

@@ -0,0 +1,57 @@
+#
+# Cookbook Name:: nova
+# Recipe:: nova-setup-monitoring
+#
+# Copyright 2009, Rackspace Hosting, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# We'll intentionally split the monitoring recipe from the stock
+# nova recipe, in case there are other monitoring systems besides
+# collectd that people want to integrate.
+
+include_recipe "collectd-graphite::collectd-client"
+
+# First, let's monitor mysql
+
+
+# this gets me credentials, still need per-role info on db name
+mysql_info = get_settings_by_role("mysql-master", "mysql")
+
+# run through each role and find the db usernames and passwords
+db_options = {}
+rolemap = {
+  "keystone" => "keystone",
+  "glance-registry" => "glance",
+  "horizon-server" => "horizon",
+  "nova-setup" => "nova"
+}
+
+rolemap.each_pair do |role, key|
+  attrs = get_settings_by_role(role, key)
+  if attrs
+    db_options[attrs["db"]["name"]] = {
+      :host => mysql_info["bind_address"],
+      :user => attrs["db"]["username"],
+      :password => attrs["db"]["password"],
+      :master_stats => false
+    }
+  end
+end
+
+collectd_plugin "mysql" do
+  template "collectd-plugin-mysql.conf.erb"
+  cookbook "nova"
+  options :databases => db_options
+end

recipes/nova-setup.rb

@@ -19,6 +19,12 @@
 
 ::Chef::Recipe.send(:include, Opscode::OpenSSL::Password)
 
+# FIXME: we need a better identifier that we want to collect
+# collectd/graphite info
+if get_settings_by_role("collectd-server", "roles")
+  include_recipe "nova::nova-setup-monitoring"
+end
+
 # Allow for using a well known db password
 if node["developer_mode"]
   node.set_unless["nova"]["db"]["password"] = "nova"
@@ -88,5 +94,3 @@ if node.has_key?(:floating) and node["nova"]["network"]["floating"].has_key?(:ip
     not_if "nova-manage floating list"
   end
 end
-
-

templates/default/collectd-plugin-mysql.conf.erb

@@ -0,0 +1,19 @@
+# This file autogenerated by Chef
+# Do not edit, changes will be overwritten
+LoadPlugin "<%= @name %>"
+
+<% if not @options.empty? %>
+<Plugin "<%= @name %>">
+  <% @options[:databases].each_pair do |db, vars| %>
+  <Database "<%= db %>">
+  <% vars.each_pair do |key, value|
+     if value.is_a? Array
+       value.each do |subvalue| %>
+    <%= collectd_key(key) %> <%= collectd_option(subvalue) %>
+  <% end else %>
+    <%= collectd_key(key) %> <%= collectd_option(value) %>
+  <% end end %>
+  </Database>
+  <% end %>
+</Plugin>
+<% end %>