```ruby
#
# Author:: Seth Chisamore <schisamo@opscode.com>
# Cookbook Name:: nagios
# Recipe:: client_package
#
# Copyright 2011, Opscode, 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.
#

if platform?("centos", "redhat", "fedora", "amazon", "scientific")
  %w{
    nrpe
    nagios-plugins
  }.each do |pkg|
    package pkg
  end
else
  %w{
    nagios-nrpe-server
    nagios-plugins
    nagios-plugins-basic
    nagios-plugins-standard
  }.each do |pkg|
    package pkg
  end
end
```

Add nagios user/password creation to the centos package recipe
user
```ruby
#
# Author:: Seth Chisamore <schisamo@opscode.com>
# Cookbook Name:: nagios
# Recipe:: client_package
#
# Copyright 2011, Opscode, 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.
#

if platform?("centos", "redhat", "fedora", "amazon", "scientific")
  %w{
    nrpe
    nagios-plugins
  }.each do |pkg|
    package pkg
  end
  
  user node['nagios']['user'] do
    system true
  end

  group node['nagios']['group'] do
    members [ node['nagios']['user'] ]
  end
else
  %w{
    nagios-nrpe-server
    nagios-plugins
    nagios-plugins-basic
    nagios-plugins-standard
  }.each do |pkg|
    package pkg
  end
end
```
assistant