Chef recipe for heartbeat

authkeys.erb

auth 1
1 md5 <%=  @node[:heartbeat][:secret] %>

default.rb

#
# Cookbook Name:: heartbeat
# Recipe:: default
#
# Copyright 2009, Wikia 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.
#

package "heartbeat"

template "/etc/ha.d/ha.cf" do
  mode 0644
  source "ha.cf.erb"
end

template "/etc/ha.d/authkeys" do
  mode 0600
  source "authkeys.erb"
end

template "/etc/ha.d/haresources" do
  mode 0644
  source "haresources.erb"
end

service "heartbeat" do
  action [ :enable, :start ]
end

ha.cf.erb

logfacility     local0

keepalive       250ms
deadtime        2
warntime        1
initdead        15

udpport         <%= @node[:heartbeat][:port] %>

ucast   <%= @node[:heartbeat][:interface] %>        <%= @node[:heartbeat][:other_member] %>

auto_failback   off

<% @node[:heartbeat][:nodes].each do |node| -%>
node <%= node %>
<% end -%>

haresources.erb

<%= @node[:heartbeat][:haresources] %>

heartbeat.rb

#
# Cookbook Name:: heartbeat
# Attributes:: heartbeat
#
# Copyright 2008, Wikia, 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.
#

heartbeat Mash.new unless attribute?("heartbeat")

metadata.rb

maintainer        "Wikia, Inc."
maintainer_email  "ops-l@wikia.com"
license           "Apache 2.0"
description       "Sets up a heartbeat cluster"
version           "0.7"

%w{ ubuntu debian }.each do |os|
  supports os
end

attribute "heartbeat",
  :display_name => "Heartbeat Hash",
  :description => "Hash of heartbeat attributes",
  :type => "hash"

attribute "heartbeat/haresources",
  :display_name => "Heartbeat resources",
  :description => "The resources line for the cluster",
  :default => ''

attribute "heartbeat/port",
  :display_name => "Heartbeat port",
  :description => "The heartbeat port",
  :default => "694"

attribute "heartbeat/other_member",
  :display_name => "Heartbeat cluster member",
  :description => "The other member of the heartbeat cluster",
  :default => ''

attribute "heartbeat/interface",
  :display_name => "Heartbeat interface",
  :description => "Interface that heartbeat listens on",
  :default => "eth0"

attribute "heartbeat/nodes",
  :display_name => "Heartbeat nodes",
  :description => "Members of the heartbeat cluster",
  :type => "array"

attribute "heartbeat/secret",
  :display_name => "Heartbeat secret",
  :description => "Shared cluster password",
  :default => "changeme"

node_attributes

"heartbeat": {
       "other_member": "192.168.0.5",
       "port": "694",
       "interface": "eth0",
       "haresources": "lvs5 192.168.0.1/24 192.168.0.2/24",
       "nodes": [
           "node1",
           "node2"
       ],
       "secret": "XXXXX"
   },