client.rb

#
# Cookbook Name:: rsyslog
# Recipe:: client
#
# Copyright 2009-2011, 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.
#

include_recipe "rsyslog"

if !node['rsyslog']['server'] and node['rsyslog']['server_ip'].nil? and Chef::Config[:solo]
  Chef::Log.fatal("Chef Solo does not support search, therefore it is a requirement of the rsyslog::client recipe that the attribute 'server_ip' is set when using Chef Solo. 'server_ip' is not set.")
elsif !node['rsyslog']['server']

  # discover the rsyslog server
  if node['rsyslog']['server_ip']
    rsyslog_server = node['rsyslog']['server_ip']
  else
    rsyslog_server = search(:node, node['rsyslog']['server_search']).first

    if rsyslog_server.nil?
      Chef::Log.warn "The rsyslog::client recipe was unable to determine the remote syslog server. Checked both the server_ip attribute and search()"
    else
      # we prefer connecting via local_ipv4 if
      # we are in the same cloud
      server_ip = begin
        if rsyslog_server.attribute?('meta_data')
          Chef::Log.info "we #{node['hostname']} are in #{node['meta_data']['region']}"
          Chef::Log.info "potential rsyslog_server #{rsyslog_server['hostname']} is in #{rsyslog_server['meta_data']['region']}"
          if node.attribute?('meta_data') && (rsyslog_server['meta_data']['region'] == node['meta_data']['region'])
            Chef::Log.info "using private_ipv4 #{rsyslog_server['meta_data']['private_ipv4']} for the rsyslog_server"
            rsyslog_server['meta_data']['private_ipv4']
          else
            Chef::Log.info "using public_ipv4 #{rsyslog_server['meta_data']['public_ipv4']} for the rsyslog_server"
            rsyslog_server['meta_data']['public_ipv4']
          end
        else
          rsyslog_server['ipaddress']
        end
      end
    end
    rsyslog_server = server_ip
  end     

  if rsyslog_server.nil?
    Chef::Log.warn "The rsyslog::client recipe was unable to determine the remote syslog server. Checked both the server_ip attribute and search()"
  end

  template "/etc/rsyslog.d/49-remote.conf" do
    only_if { node['rsyslog']['remote_logs'] && !rsyslog_server.nil? }
    source "49-remote.conf.erb"
    backup false
    variables(
      :server => rsyslog_server,
      :protocol => node['rsyslog']['protocol']
    )
    owner node["rsyslog"]["user"]
    group node["rsyslog"]["group"]
    mode 0644
    notifies :restart, "service[#{node['rsyslog']['service_name']}]"
  end

  file "/etc/rsyslog.d/server.conf" do
    only_if do ::File.exists?("/etc/rsyslog.d/server.conf") end
    action :delete
    notifies :reload, "service[#{node['rsyslog']['service_name']}]"
  end
end