/usr/lib/ruby/vendor_ruby/ohai/plugins/azure.rb is in ohai 8.21.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | # Copyright:: Copyright (c) 2013-2016 Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#
Ohai.plugin(:Azure) do
provides "azure"
collect_data do
# The azure hints are populated by the knife plugin for Azure.
# The project is located at https://github.com/chef/knife-azure
# Please see the lib/chef/knife/azure_server_create.rb file in that
# project for details
azure_metadata_from_hints = hint?("azure")
if azure_metadata_from_hints
Ohai::Log.debug("azure plugin: azure_metadata_from_hints is present.")
azure Mash.new
azure_metadata_from_hints.each { |k, v| azure[k] = v }
elsif has_waagent? || has_dhcp_option_245?
Ohai::Log.debug("azure plugin: No hints present, but system appears to be on azure.")
azure Mash.new
else
Ohai::Log.debug("azure plugin: No hints present for azure and doesn't appear to be azure.")
false
end
end
# check for either the waagent or the unknown-245 DHCP option that Azure uses
# http://blog.mszcool.com/index.php/2015/04/detecting-if-a-virtual-machine-runs-in-microsoft-azure-linux-windows-to-protect-your-software-when-distributed-via-the-azure-marketplace/
def has_waagent?
if File.exist?("/usr/sbin/waagent") || Dir.exist?('C:\WindowsAzure')
Ohai::Log.debug("azure plugin: Found waagent used by MS Azure.")
return true
end
end
def has_dhcp_option_245?
has_245 = false
if File.exist?("/var/lib/dhcp/dhclient.eth0.leases")
File.open("/var/lib/dhcp/dhclient.eth0.leases").each do |line|
if line =~ /unknown-245/
Ohai::Log.debug("azure plugin: Found unknown-245 DHCP option used by MS Azure.")
has_245 = true
break
end
end
end
return has_245
end
end
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