InSpec Azure Resource Pack

This resource pack provides resources for Azure Resources. It will ship with the required resources to write your own compliance rules:

├── README.md - this readme
├── controls - contains example controls
└── libraries - contains Azure resources

Get Started

This profile uses the Azure Ruby SDK and as such requires a Service Principal Name (SPN) to be created in the Azure subscription that is being tested.

This can be done on the command line or from the Azure Portal

• Azure CLI: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-authenticate-service-principal-cli
• PowerShell: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-authenticate-service-principal
• Azure Portal: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-create-service-principal-portal

The information from the SPN can be specified either in a file ~/.azure/credentials, a different file or as environment variables.

Credentials File

The simplest way is to create the file ~/.azure/credentials with the following format. The profile is configured to look for this file by default do no settings are required.

[<SUBSCRIPTION_ID>]
client_id = "<CLIENT_ID>"
client_secret = "<CLIENT_SECRET>"
tenant_id = "<TENANT_ID>"

So to run the profile now it is as simple as running:

inspec exec inspec-azure

A different credentials file, with the same format, can be specified as an environment variable AZURE_CREDS_FILE:

AZURE_CREDS_FILE="/path/to/another/file" inspec exec inspec-azure

Note that this file format supports multiple subscription_ids. By default inspec-azure will pick the first subscription in the file. However if another subscription should be used then specify it in the environment variable AZURE_SUBSCRIPTION_ID.

AZURE_SUBSCRIPTION_ID="2fbdbb02-df2e-11e6-bf01-fe55135034f3" inspec exec inspec-azure

Environment variables

It is possible to not have a credentials file at all and specify all of the required information as the following environment variables:

• AZURE_SUBSCRIPTION_ID
• AZURE_CLIENT_ID
• AZURE_CLIENT_SECRET
• AZURE_TENANT_ID

For example:

AZURE_SUBSCRIPTION_ID="2fbdbb02-df2e-11e6-bf01-fe55135034f3" \
AZURE_CLIENT_ID="58dc4f6c-df2e-11e6-bf01-fe55135034f3" \
AZURE_CLIENT_SECRET="Jibr4iwwaaZwBb6W" \
AZURE_TENANT_ID="6ad89b58-df2e-11e6-bf01-fe55135034f3" inspec exec inspec-azure

Use the resources

Since this is an InSpec resource pack, it only defines InSpec resources. It includes example tests only. To easily use the Azure InSpec resources in your tests do the following:

Create a new profile

inspec init profile my-profile

Adapt the inspec.yml

name: my-profile
title: My own Azure profile
version: 0.1.0
depends:
  - name: azure
    url: https://github.com/chef/inspec-azure/archive/master.tar.gz

Add controls

Since your profile depends on the resource pack, you can use those resources in your own profile:

control 'azure-1' do
  impact 1.0
  title 'Checks that the machine was built from the correct image'

  describe azurevm_image(host: 'example-01', resource_group: 'MyResourceGroup') do
    its('sku') { should eq '16.04.0-LTS' }
    its('publisher') { should ieq 'Canonical' }
    its('offer') { should ieq 'UbuntuServer' }
  end
end

Available Resources

• azure_vm - This resource reads information about a virtual machine in the specified resource group

Resource Name	Resources	Description
azure_vm	publisher	Publisher that provided the image in the marketplace
	offer	The offer of the image
	sku	The SKU being used

• azure_vm_datadisks - Resource to read the data disks for a machine and check that they are of the correct size etc

Resource Name	Resources	Description
azure_vm_datadisks	has_disks?	Boolean test to see if a machine has datadisks
	count	Returns the number of data disks attached to the machine
	where	Filter that allows for different tests to be performed, see examples below

When data disks are retrieved from a machine they are given as an array. The where filter will interogate the array according the criteria it is given. The followin attributes are available in the filter:

• disk - Disk number (0 index based)
• caching - What sort of caching is enabled on the data disk
• create_option - How the disk was created
• size - The size of the disk in GB
• lun - The LUN number
• name - Name of the disk
• uri - Full URI to the disk in Blob storage
• storage_account - The name of the storage account in which the Blob storage exists

Note: This does not yet work with Managed Disks

Examples

Test for 1 disk with a size greater than 10gb

control 'azure-1' do
  impact 1.0
  title 'Checks that the machine has exactly one data disk and it is over 10gb in size'

  describe azurevm_image(host: 'example-01', resource_group: 'MyResourceGroup') do
    its('has_disks?') { should be true }
    its('count') { should eq 1 }
  end

  describe azurevm_image(host: 'example-01', resource_group: 'MyResourceGroup').where { disk == 0 and size > 10 } do
    its('entries') { should_not be_empty }
  end
end

Using the example controls

There a number of example controls that have been added to this resource. They are driven by environment variables to make them easier to run. For example the following would test a machine called example-01 in the resource group exmaple-rg.

$> AZURE_VM_NAME='example-01' AZURE_RESOURCE_GROUP_NAME='example-rg' bundle exec inspec exec .

License

Author:	Russell Seymour (russell@chef.io)
Copyright:	Copyright (c) 2017 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.