Azure Subscription and Resource Groups discovery scenarios - Adaptive Applications - BlueCat Gateway - 23.3.2

Cloud Discovery & Visibility Administration Guide

Locale
English
Product name
BlueCat Gateway
Version
23.3.2

In addition to general discovery, you can perform discovery at the Azure subscription level. (You specify the subscription and resource group in the Azure Credentials page.) In this context, there are three general scenarios:

  • Discovery of a specific subscription with a specific resource group.

  • Discovery of a specific subscription with all resource groups.

  • Discovery of all subscriptions with all resource groups.

During discovery, Cloud Discovery & Visibility (CDV) imports Azure resource data differently depending on the layout of the networks you're working with (as specified by selected Subscriptions and Resource Groups in the Azure Credentials settings), as well as how you configure Azure Configuration settings. These differences in behavior can be complex. The examples below describe the impact of different configuration settings under different circumstances.
Note: Within Cloud Discovery & Visibility (CDV), each resource group is a Configuration with a corresponding discovery and visibility job.

Discovery of a specific subscription with a specific resource group

In this scenario, there are two subscriptions in the Azure infrastructure:
  • Subscription eng-cloud-sub-1 contains two resource groups: rg-1 and rg-2.
  • Subscription eng-cloud-sub-2 contains two resource groups: rg-3 and rg-4.

Subscription eng-cloud-sub-1 and resource group rg-1 are specified in the Azure Credentials page.

Configuration mode for naming BlueCat Configuration field Behavior
Default N/A (field disabled)

CDV imports Azure resources into Address Manager with the following Configuration name:

eng-cloud-sub-1/rg-1
Custom custom-b

CDV imports Azure resources into Address Manager with the following Configuration name:

custom-b/eng-cloud-sub-1/rg-1
Combined custom-d

CDV imports Azure resources into Address Manager with the following Configuration name:

custom-d

Discovery of a specific subscription with all resource groups

In this scenario, there are two subscriptions in the Azure infrastructure:
  • Subscription eng-cloud-sub-1 contains two resource groups: rg-1 and rg-2.
  • Subscription eng-cloud-sub-2 contains two resource groups: rg-3 and rg-4.
Subscription eng-cloud-sub-2 and all resource groups are specified in the Azure Credentials page.
Configuration mode for names BlueCat Configuration field Behavior
Default N/A (field disabled)

CDV imports Azure resources into Address Manager with the following Configuration name:

eng-cloud-sub-2/rg-3
eng-cloud-sub-2/rg-4
Custom custom-b

CDV imports Azure resources into Address Manager with the following Configuration name:

custom-b/eng-cloud-sub-2/rg-3
custom-b/eng-cloud-sub-2/rg-4
Combined custom-2d

CDV imports Azure resources into Address Manager with the following Configuration name:

custom-2d

Note that this can result in unexpected errors and data loss during discovery and visibility.

For example, say that:

  • Resource group rg-3 has a virtual network of 10.2.0.0/24 with subnet 10.2.0.0/24.
  • Resource group rg-4 has a virtual network of 10.2.0.0/24 with subnet 10.2.0.0/24 and virtual machine vm-2 is linked to the subnet.

During discovery and visibility, only the network and subnet from rg-3 will be imported into Address Manager. The 10.2.0.0/24 network and subnet from rg-4 will not be imported, except for virtual machine vm-2 from rg-4 (which will be linked to the 10.2.0.0/24 subnet of rg-3).

If you later delete the 10.2.0.0/24 virtual network of rg-3, CDV will process the deletion of the 10.2.0.0/24 IPv4 Block in Address Manager. After that, virtual machine vm-2 will no longer be linked to a network.

Discovery of all subscriptions with all resource groups

In this scenario, there are two subscriptions in the Azure infrastructure:
  • Subscription eng-cloud-sub-1 contains two resource groups: rg-1 and rg-2.
  • Subscription eng-cloud-sub-2 contains two resource groups: rg-3 and rg-4.
All subscriptions and all resource groups are specified in the Azure Credentials page.
Configuration mode for names BlueCat Configuration field Behavior
Default N/A (field disabled)

CDV imports Azure resources into Address Manager with the following Configuration names:

eng-cloud-sub-1/rg-1
eng-cloud-sub-1/rg-2
eng-cloud-sub-2/rg-3
eng-cloud-sub-2/rg-4
Custom custom-b

CDV imports Azure resources into Address Manager with the following Configuration names:

custom-b/eng-cloud-sub-1/rg-1
custom-b/eng-cloud-sub-1/rg-2
custom-b/eng-cloud-sub-1/rg-3
custom-b/eng-cloud-sub-1/rg-4
Combined custom-3d

CDV imports Azure resources into Address Manager with a single configuration name

custom-3d

Note that this can result in unexpected errors and data loss during discovery and visibility.

For example, say that:

  • Resource group rg-3 has a virtual network of 10.2.0.0/24 with subnet 10.2.0.0/24.
  • Resource group rg-4 has a virtual network of 10.2.0.0/24 with subnet 10.2.0.0/24 and virtual machine vm-2 is linked to the subnet.

During discovery and visibility, only the network and subnet from rg-3 will be imported into Address Manager. The 10.2.0.0/24 network and subnet from rg-4 will not be imported, except for virtual machine vm-2 from rg-4 (which will be linked to the 10.2.0.0/24 subnet of rg-3).

If you later delete the 10.2.0.0/24 virtual network of rg-3, CDV will process the deletion of the 10.2.0.0/24 IPv4 Block in Address Manager. After that, virtual machine vm-2 will no longer be linked to a network.