Closes #25 Signed-off-by: Russell Seymour <russell.seymour@turtlesystems.co.uk>
9.3 KiB
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
└── libraries - contains Azure resources
└── test - contains integration tests
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
Alternatively, if you know that the subscription you want to use is the second one in you credentials file then you can use the following:
AZURE_SUBSCRIPTION_NUMBER=2 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 azure_virtual_machine(name: '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_resource_group
- This resource reads information about the resources in the specified resource group
Resource Name | Resources | Description |
---|---|---|
azure_rg | location | Where the item has been deployed |
total | The total number of resources in the resource group | |
nic_count | Helper method to return the number of Network Interface Cards (NIC) that exist | |
vm_count | Helper method to return the number of Virtual Machines(VM) that exist | |
vnet_count | Helper method to return the number of Virtual Networks (VNET) that exist | |
nsg_count | Helper method to return the number of Network Security Groups (NSG) that exist | |
sa_count | Helper method to return the number of Storage Accounts (SA) that exist | |
public_ip_count | Helper method to return the number of Public IP Addresses that exist | |
contains | Used to determine if a specific item exists |
This resource also has a FilterTable which means that it is possible to check for items that do not yet have a helper method.
Test for the number of storage accounts
control 'azure-1' do
impact 1.0
title 'Checks that there is only one storage account in the resource group'
describe azure_resource_group(name: 'MyResourceGroup').where { type == 'Microsoft.Storage/storageAccounts' }.entries do
its('count') { should eq 1 }
end
end
Ensure that a specific item exists
control 'azure-1' do
impact 1.0
title 'Checks a resource with the name "example-VM" exists'
describe azure_resource_group(name: 'MyResourceGroup').contains(parameter: 'name', value: 'example-VM') do
it { should be true }
end
end
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 | |
size | The size of the machine | |
location | Where the machine has been deployed | |
boot_diagnostics? | Whether boot diagnostics have been enabled or not | |
nic_count | How many network cards are attached to the machine | |
username | The admin username that has been assigned to the machine | |
computername | Computer name of the machine in the operating system. This maybe different to the VM name as seen in Azure | |
hostname | Alias for computername | |
password_authentication? | If password authentication is enabled. For Windows machines this is always true | |
ssh_key_count | How many SSH public keys have been added to the machine. For Windows this is always 0 | |
os_type | Tyep type of operating system. Linux or Windows |
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 diskcreate_option
- How the disk was createdsize
- The size of the disk in GBlun
- The LUN numbername
- Name of the diskuri
- Full URI to the disk in Blob storagestorage_account
- The name of the storage account in which the Blob storage exists
Note: This does not yet work with Managed Disks
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 azure_virtual_machine(name: 'example-01', resource_group: 'MyResourceGroup') do
its('has_disks?') { should be true }
its('count') { should eq 1 }
end
describe azure_virtual_machine_datadisks(name: 'example-01', resource_group: 'MyResourceGroup').where { disk == 0 and size > 10 } do
its('entries') { should_not be_empty }
end
end
Testing
The test/integration/verify/controls
directory contains all of the tests that are run during integration tests. These can be used as examples of how to use this resource pack.
Rake tasks have been configured to enable the running of the integration tests:
rake changelog # Generate a Change log from GitHub
rake lint # Run robocop linter
rake rubocop # Run Rubocop lint checks
rake test:integration # Perform Integration Tests
As with using the resources themselves the integration tests rely on a Service Principal Name being defined. Please see the information at the start of this page on how to generate this.
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.