rsyslog remote logging

rsyslog::client.rb

# Recipe:: client
#
# Copyright 2010, Medidata Solutions 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.
#

#  NOTE NOTE NOTE
#  We use a Chef attr namespace "mdsol" to hold all of our infrastructure's global 
#  attribs.

include_recipe "rsyslog::default"

# Determine if there is a logserver 
#  First: set by the role attribute mdsol:logserver  ( this allows multiple syslog servers )
#  Second: search for the first accurence of a rsyslog_server:true ( knife search node "rsyslog_server:true" -a fqdn ) 
#  Third: just set it to localhost and don't bother with the configuration 
#  This is *not* best handled by a default[:attr] b/c we're checking for a non-rsyslog namespace
#  attribute and setting a local var based on the answer.

rsyslog_server = if host = node[:mdsol][:logserver]
                   host
                elsif (host = search(:node, "rsyslog_server:true").first) && host['fqdn']
                   host['fqdn']
                else
                  "localhost"
                end 

rsyslog_port = if port = node[:mdsol][:log_port]
                 port
               else
                 "514"
               end


unless node[:rsyslog][:server] 
  unless rsyslog_server == "localhost"
    template "/etc/rsyslog.d/remote.conf" do
      source "remote.conf.erb"
      backup false
      variables(
        :server => rsyslog_server,
        :protocol => node[:rsyslog][:protocol],
        :port => rsyslog_port
      )
      owner "root"
      group "root"
      mode 0644
      notifies :restart, resources(:service => "rsyslog"), :immediate
    end
  end

  file "/etc/rsyslog.d/server.conf" do
    action :delete
    notifies :reload, resources(:service => "rsyslog"), :immediate
    only_if do File.exists?("/etc/rsyslog.d/server.conf") end
  end
end

if rsyslog_server == "localhost"
  file "/etc/rsyslog.d/remote.conf" do
    action :delete
    notifies :reload, resources(:service => "rsyslog"), :immediate
    only_if do File.exists?("/etc/rsyslog.d/remote.conf") end
  end
end

templates-remote.conf.erb

#
# Generated by Chef
#
# Network logging configuration

<% case @protocol -%>
<% when "tcp" -%>
*.*;lpr.none;news.none @@<%= @server %>:<%= @port %>
<% when "udp" -%>
*.*;lpr.none;news.none @<%= @server %>:<%= @port %>
<% end -%>